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C.E.T. averages and extremes, 1772 to 2023 (updated)


Roger J Smith

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  • Location: Rossland BC Canada
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Over six years ago I posted some files that show averages and extremes for the C.E.T. daily data period 1772 to present. As I cannot edit those files, I am now going to replace the thread with updated versions. Note to any moderators, I will need full access to the old thread until this work is complete so please don't hide it away (yet) in any archives. 

Feb 2022 _ Have updated this table to 1772-2021; have also changed the thread title to reflect the various updates to 2020.

 

Mean Daily C.E.T. for the entire period of record 1772-2021

DATE ... MONTH

<<>>... JAN ..... FEB .... MAR ..... APR ..... MAY .... JUN ..... JUL ..... AUG ..... SEP ...... OCT ...... NOV ..... DEC

01 ..... 3.37 .... 3.93 .... 4.57 .... 6.80 .... 9.45 .. 13.37 .. 15.53 .. 16.14 .. 14.65 .. 11.87 .... 8.08 .... 5.08

02 ..... 3.35<....3.87 .... 4.78 .... 7.00 .... 9.72 .. 13.62 .. 15.60 .. 16.12 .. 14.84 .. 11.65<....7.96 .... 5.00

03 ..... 3.21 .... 3.98 .... 4.74 .... 6.98 .... 9.74 .. 13.59 .. 15.60 .. 16.13 .. 14.70 .. 11.55<... 7.73 .... 5.05

04 ..... 3.40 .... 3.99 .... 4.68 .... 7.09 .... 9.91 .. 13.69 .. 15.72 .. 16.13 .. 14.55 .. 11.42 .... 7.42 .... 5.05

05 ..... 3.27 .... 4.11 .... 4.78 .... 7.12 .. 10.13 .. 13.71 .. 15.88 .. 16.20 .. 14.54 .. 11.19 .... 7.44 .... 5.15<

06 ..... 3.40 .... 4.11 .... 4.95<....7.29 .. 10.31 .. 13.70 .. 15.75<..16.08 .. 14.49 .. 11.25<....7.10 .... 4.84

07 ..... 3.23 .... 4.19 .... 5.00 .... 7.43 .. 10.54 .. 13.77 .. 15.82 .. 16.04 .. 14.46 .. 11.17 .... 6.97 .... 4.65

08 ..... 3.30 .... 3.95<....4.91 .... 7.42 .. 10.62 .. 13.80 .. 15.79 .. 16.02 .. 14.33 .. 11.00 .... 6.82 .... 4.45<

09 ..... 3.41 .... 3.91 .... 4.75<....7.33 .. 10.52 .. 13.94 .. 15.82 .. 16.02 .. 14.16 .. 10.79 .... 6.64 .... 4.26

10 ..... 3.48 .... 3.88 .... 4.95<....7.54 .. 10.62 .. 13.88 .. 15.91 .. 16.10 .. 14.01 .. 10.93 .... 6.73 .... 4.33

11 ..... 3.37 .... 3.72 .... 5.16 .... 7.64 .. 10.80 .. 13.97 .. 16.09 .. 16.11 .. 13.97 .. 10.67 .... 6.87 .... 4.20

12 ..... 3.18 .... 3.67 .... 5.04 .... 7.72 .. 11.09 .. 14.06 .. 16.23 .. 16.24 .. 13.74 .. 10.40 .... 6.60 .... 4.37

13 ..... 3.37 .... 3.63 .... 5.09 .... 7.63 .. 11.09 .. 14.22 .. 16.32 .. 16.13 .. 13.62 .. 10.16 .... 6.42 .... 4.51

14 ..... 3.38 .... 3.74 .... 5.33 .... 8.02 .. 11.11 .. 14.22 .. 16.28 .. 16.03 .. 13.50 .. 10.17 .... 6.17 .... 4.52

15 ..... 3.27 .... 4.01 .... 5.53 .... 8.27 .. 11.12 .. 14.28 .. 16.24 .. 15.93 .. 13.44 .... 9.96 .... 6.00 .... 4.48

16 ..... 3.42 .... 4.00 .... 5.75<....8.22 .. 11.29 .. 14.35<..16.24 .. 15.73 .. 13.45 .... 9.71 .... 5.85<... 4.41

17 ..... 3.39 .... 3.87 .... 5.71 .... 8.15 .. 11.35<..14.53 .. 16.22 .. 15.72 .. 13.53 .... 9.82 .... 5.60 .... 4.46

18 ..... 3.36 .... 3.85 .... 5.75<....8.22 .. 11.34 .. 14.52 .. 16.29 .. 15.80 .. 13.31 .... 9.71 .... 5.68 .... 4.44

19 ..... 3.49 .... 3.86 .... 5.77 .... 8.39 .. 11.39 .. 14.58 .. 16.30 .. 15.71 .. 13.06 .... 9.67 .... 5.63 .... 4.09

20 ..... 3.33 .... 3.87 .... 6.02 .... 8.61 .. 11.63 .. 14.72 .. 16.28 .. 15.67 .. 12.89 .... 9.47 .... 5.52 .... 3.98

21 ..... 3.48 .... 4.28 .... 5.94 .... 8.98 .. 11.81 .. 14.74 .. 16.18 .. 15.56 .. 12.60 .... 9.47 .... 5.61 .... 4.04

22 ..... 3.57 .... 4.47 .... 5.94 .... 9.00 .. 12.00 .. 14.84 .. 16.23 .. 15.55 .. 12.62 .... 9.31 .... 5.49 .... 4.00

23 ..... 3.53 .... 4.59 .... 6.08 .... 9.00 .. 12.29 .. 14.82 .. 16.23 .. 15.29 .. 12.55 .... 9.07 .... 5.48 .... 3.97

24 ..... 3.56 .... 4.56 .... 6.26 .... 9.00 .. 12.45 .. 14.95 .. 16.20 .. 15.31 .. 12.52 .... 8.91 .... 5.41 .... 3.87

25 ..... 3.48 .... 4.59 .... 6.29 .... 8.96 .. 12.38 .. 15.11 .. 16.25<..15.23 .. 12.40 .... 8.60 .... 5.30 .... 3.55

26 ..... 3.57 .... 4.54 .... 6.18 .... 8.96 .. 12.39 .. 15.23 .. 16.22 .. 15.23 .. 12.36 .... 8.31 .... 5.33 .... 3.52

27 ..... 3.71 .... 4.65<....6.29 .... 8.86 .. 12.55<..15.16 .. 16.05<..15.04 .. 12.30 .... 8.37 .... 5.07 .... 3.51

28 ..... 3.64 .... 4.53 .... 6.43 .... 8.95<..12.70 .. 15.29 .. 16.07 .. 15.04 .. 12.07 .... 8.37 .... 5.20 .... 3.48

29 ..... 3.80 .... 4.56 .... 6.55<....8.99 .. 12.64 .. 15.30 .. 16.18 .. 14.90 .. 12.06 .... 8.07 .... 5.07 .... 3.76

30 ..... 3.78 .... xxxx .... 6.76 .... 9.38 .. 12.82 .. 15.28 .. 16.22 .. 14.88 .. 11.94  ... 8.18 .... 5.04 .... 3.73

31 ..... 3.93 .... xxxx .... 6.87 .... xxxx .. 12.99 ... xxxx .. 16.19 .. 14.61 ... xxxx .... 8.23 .... xxxx .... 3.60

Month . 3.45 ... 4.09 ... 5.57 ....8.10 .. 11.32 .. 14.37 .. 16.06 ..15.70 .. 13.42 .... 9.92 .... 6.21 .... 4.27

one dec_ 3.5 ___ 4.1 ___ 5.6 ___ 8.1 ___ 11.3 ___14.4 __16.1___ 15.7 ___13.4 ___ 9.9 ___  6.2 ___ 4.3

<<>> ... JAN .... FEB .... MAR .... APR .... MAY .... JUN. ..,.. JUL ..... AUG ..... SEP ..... OCT .... NOV .... DEC

Conversion to one decimal _ it is only an issue if the second decimal is five, which way to round from all not-shown decimals ...

so I have marked those rounding down (instead of up which most readers would do) with this symbol <

any entries ending in a 5 (second decimal) without the < can be rounded up when converting to one decimal. 

Note also: Dec 1786 daily data does not exist, the table has the monthly mean of 2.8 throughout. You could assume that the

averages produced should perhaps be adjusted (higher by .02 at start of month to lower by .02 at end) if Dec 1786 ran generally

milder to colder temperatures. Also, monthly averages for February are adjusted slightly for frequency of leap year days. 

____________________________________________

1991-2020 daily averages ... see post near end of "new 1991-2020 normals" thread in main weather forum. 

Edited by Roger J Smith
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C.E.T. daily means for 1981-2010

DATE ... MONTH

<<>>...JAN .... FEB .... MAR .... APR ....MAY .... JUN .... JUL ....AUG .... SEP .... OCT ....NOV .... DEC

01 ..... 4.45 .... 4.44 .... 4.97 .... 8.26 .. 10.74 .. 13.38 .. 15.97 .. 16.82 .. 15.38 .. 12.77 .... 9.40 .... 5.49

02 ..... 4.58 .... 4.52 .... 4.79 .... 8.01 .. 10.35 .. 13.69 .. 15.99 .. 16.80 .. 15.44 .. 12.35 .... 9.06 .... 5.61

03 ..... 4.34 .... 4.70 .... 5.05 .... 7.30 .. 10.38 .. 13.27 .. 15.89 .. 16.93 .. 15.38 .. 12.17 .... 9.11 .... 5.96

04 ..... 4.38 .... 5.09 .... 4.75 .... 7.05 .. 10.36 .. 13.15 .. 16.09 .. 16.88 .. 14.82 .. 11.94 .... 8.64 .... 6.11

05 ..... 4.64 .... 5.29 .... 5.42 .... 7.19 .. 10.51 .. 13.30 .. 16.45 .. 17.20 .. 15.29 .. 11.75 .... 8.22 .... 6.26

06 ..... 4.61 .... 5.49 .... 6.32 .... 7.43 .. 10.93 .. 13.75 .. 16.41 .. 17.13 .. 15.12 .. 11.95 .... 8.08 .... 5.07

07 ..... 3.45 .... 4.89 .... 6.55 .... 7.30 .. 10.90 .. 14.08 .. 16.25 .. 16.74 .. 15.08 .. 11.83 .... 8.32 .... 4.85

08 ..... 3.99 .... 4.45 .... 6.47 .... 7.06 .. 10.77 .. 13.99 .. 16.42 .. 16.67 .. 15.07 .. 11.95 .... 8.76 .... 4.36

09 ..... 4.31 .... 4.02 .... 6.27 .... 7.30 .. 10.70 .. 14.09 .. 16.19 .. 16.87 .. 14.79 .. 11.97 .... 8.18 .... 4.34

10 ..... 4.45 .... 4.13 .... 6.83 .... 8.12 .. 10.72 .. 14.32 .. 16.60 .. 16.80 .. 14.63 .. 12.22 .... 8.06 .... 4.27

11 ..... 4.36 .... 4.27 .... 6.51 .... 8.01 .. 10.97 .. 13.71 .. 16.67 .. 16.73 .. 14.82 .. 11.58 .... 8.25 .... 4.19

12 ..... 4.26 .... 4.77 .... 5.90 .... 7.77 .. 11.22 .. 13.92 .. 16.49 .. 16.82 .. 14.39 .. 11.37 .... 8.18 .... 4.28

13 ..... 4.54 .... 4.00 .... 6.23 .... 7.56 .. 11.59 .. 14.02 .. 16.55 .. 16.37 .. 13.89 .. 11.22 .... 7.23 .... 4.62

14 ..... 4.49 .... 3.36 .... 6.53 .... 7.99 .. 11.63 .. 14.27 .. 16.76 .. 16.85 .. 13.74 .. 10.80 .... 6.89 .... 4.48

15 ..... 4.66 .... 3.57 .... 6.99 .... 8.25 .. 11.68 .. 14.21 .. 16.99 .. 16.91 .. 13.63 .. 10.74 .... 6.81 .... 4.57

16 ..... 4.75 .... 3.63 .... 6.89 .... 8.60 .. 11.38 .. 14.85 .. 16.72 .. 16.63 .. 13.86 .. 10.25 .... 6.79 .... 4.53

17 ..... 4.45 .... 3.66 .... 7.43 .... 8.41 .. 11.36 .. 15.04 .. 16.27 .. 16.58 .. 13.90 .... 9.87 .... 6.23 .... 4.44

18 ..... 4.35 .... 3.81 .... 7.09 .... 8.11 .. 11.53 .. 14.87 .. 16.45 .. 16.46 .. 13.80 .. 10.00 .... 6.65 .... 4.34

19 ..... 4.89 .... 4.07 .... 6.68 .... 8.11 .. 11.93 .. 15.26 .. 16.88 .. 16.88 .. 13.64 .. 10.00 .... 6.32 .... 4.30

20 ..... 5.04 .... 3.95 .... 6.54 .... 8.39 .. 12.32 .. 14.98 .. 17.08 .. 16.77 .. 14.02 .... 9.74 .... 5.99 .... 3.75

21 ..... 4.98 .... 4.23 .... 6.61 .... 9.08 .. 12.17 .. 14.50 .. 16.81 .. 16.36 .. 13.63 .... 9.77 .... 5.67 .... 4.30

22 ..... 4.35 .... 4.25 .... 6.91 .... 9.36 .. 12.19 .. 14.61 .. 16.78 .. 16.43 .. 13.69 .... 9.57 .... 5.74 .... 4.45

23 ..... 4.44 .... 4.33 .... 6.95 .... 9.64 .. 12.86 .. 14.90 .. 16.78 .. 16.11 .. 13.42 .... 9.61 .... 5.76 .... 4.69

24 ..... 4.58 .... 4.58 .... 7.41 .... 9.64 .. 13.35 .. 14.91 .. 16.47 .. 16.08 .. 12.76 .... 9.36 .... 6.00 .... 4.68

25 ..... 4.21 .... 4.21 .... 7.33 .. 10.15 .. 12.45 .. 15.31 .. 17.03 .. 15.78 .. 12.73 .... 9.39 .... 6.20 .... 4.50

26 ..... 4.16 .... 4.80 .... 7.22 .. 10.02 .. 12.50 .. 15.33 .. 17.20 .. 15.73 .. 12.79 .... 9.54 .... 6.06 .... 4.34

27 ..... 4.30 .... 5.21 .... 6.98 .. 10.03 .. 12.26 .. 15.60 .. 17.07 .. 15.42 .. 12.70 .... 9.73 .... 5.88 .... 4.08

28 ..... 4.40 .... 5.19 .... 7.19 .... 9.84 .. 12.49 .. 15.56 .. 17.28 .. 15.17 .. 13.18 .... 9.63 .... 5.57 .... 4.22

29 ..... 4.69 .... 4.43* ... 7.20 .... 9.85 .. 12.76 .. 15.95 .. 17.67 .. 15.22 .. 13.03 .... 8.73 .... 5.32 .... 4.04

30 ..... 4.28 .... xxxx .... 7.57 .. 10.39 .. 13.09 .. 15.88 .. 17.47 .. 15.47 .. 12.73 .... 9.12 .... 5.58 .... 4.23

31 ..... 4.56 .... xxxx .... 7.93 .... xxxx .. 13.23 .. xxxxx .. 17.15 .. 15.10 .. xxxxx .... 9.18 .... xxxx .... 4.29

 

Month . 4.45 .... 4.39 .... 6.56 .... 8.47 .. 11.66 .. 14.49 .. 16.67 .. 16.41 .. 14.04 .. 10.65 .... 7.10 .... 4.63

>>> .... JAN .... FEB .... MAR .... APR .... MAY ... JUN .... JUL .... AUG .... SEP .... OCT ....NOV .... DEC

 

* leap year day, 7 cases ... Feb monthly is 4.39 whether you weight leap year day or not.

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Dalton minimum 30-year averages

1795 to 1824

This table can be compared to the first two, showing how cold the winter climate can be for a 30-year period. I chose the coldest possible 30-year winter period, 1795-1824 ... the Dalton is usually held to be about 1794 to 1834 spanning three rather weak solar cycles that peaked around 1801, 1816 and 1830. This chosen period may not be the coldest for other parts of the year. However, it does give you an idea how cold a non-glacial period can become, with some days showing averages below 2.0 deg C.

DATE ... MONTH

<<>>...JAN .... FEB .... MAR .... APR ....MAY .... JUN .... JUL ....AUG .... SEP .... OCT ....NOV ....DEC

01 ..... 2.10 .... 3.67 .... 4.31 .... 6.50 .... 9.76 .. 13.35 .. 14.87 .. 15.86 .. 14.42 .. 11.05 .... 7.98 .... 4.55

02 ..... 2.24 .... 3.66 .... 4.81 .... 6.58 .. 10.23 .. 13.57 .. 15.07 .. 15.72 .. 14.80 .. 11.33 .... 8.00 .... 3.98

03 ..... 1.83 .... 3.73 .... 5.02 .... 6.46 .. 10.21 .. 13.66 .. 14.75 .. 16.34 .. 15.14 .. 11.57 .... 6.92 .... 4.09

04 ..... 2.09 .... 3.28 .... 4.68 .... 6.51 .. 10.11 .. 13.70 .. 14.98 .. 15.65 .. 14.78 .. 11.63 .... 5.85 .... 4.73

05 ..... 2.45 .... 3.54 .... 4.14 .... 6.61 .. 10.60 .. 13.52 .. 15.00 .. 15.61 .. 14.28 .. 11.21 .... 6.06 .... 4.19

06 ..... 2.92 .... 3.68 .... 3.76 .... 6.90 .. 10.97 .. 13.22 .. 14.90 .. 15.58 .. 14.30 .. 11.19 .... 6.18 .... 3.66

07 ..... 2.38 .... 3.66 .... 3.89 .... 7.30 .. 11.35 .. 13.62 .. 15.19 .. 15.34 .. 13.90 .. 11.04 .... 6.48 .... 3.25

08 ..... 2.47 .... 3.44 .... 4.07 .... 7.43 .. 11.40 .. 13.80 .. 15.22 .. 15.75 .. 13.68 .. 10.83 .... 6.33 .... 3.01

09 ..... 2.61 .... 4.36 .... 3.84 .... 7.16 .. 10.91 .. 13.80 .. 15.47 .. 15.63 .. 13.73 .. 10.42 .... 6.07 .... 2.96

10 ..... 2.48 .... 4.53 .... 4.01 .... 7.35 .. 10.66 .. 13.69 .. 15.63 .. 15.84 .. 13.55 .. 10.07 .... 6.22 .... 2.74

11 ..... 2.39 .... 4.23 .... 4.22 .... 7.05 .. 10.64 .. 13.63 .. 15.94 .. 16.29 .. 13.66 .. 10.14 .... 6.55 .... 3.22

12 ..... 1.87 .... 3.91 .... 4.72 .... 6.98 .. 10.49 .. 13.39 .. 15.95 .. 16.13 .. 13.12 .... 9.56 .... 6.96 .... 3.30

13 ..... 2.25 .... 3.42 .... 4.47 .... 7.38 .. 10.17 .. 13.99 .. 15.98 .. 15.93 .. 13.13 .... 9.50 .... 6.08 .... 3.01

14 ..... 2.65 .... 3.02 .... 5.06 .... 7.74 .. 10.15 .. 14.43 .. 15.85 .. 15.74 .. 13.99 .... 9.48 .... 5.91 .... 3.05

15 ..... 1.73 .... 3.34 .... 5.18 .... 8.40 .. 10.65 .. 13.87 .. 15.64 .. 15.79 .. 14.23 .... 9.44 .... 5.76 .... 3.05

16 ..... 1.98 .... 3.53 .... 5.04 .... 8.29 .. 11.07 .. 13.91 .. 15.68 .. 15.53 .. 13.67 .... 8.92 .... 5.74 .... 3.51

17 ..... 2.40 .... 3.49 .... 4.99 .... 8.01 .. 11.59 .. 14.00 .. 15.82 .. 15.83 .. 13.83 .... 8.79 .... 5.57 .... 3.61

18 ..... 2.50 .... 3.53 .... 4.90 .... 7.70 .. 11.82 .. 14.26 .. 15.94 .. 15.90 .. 13.67 .... 9.47 .... 5.29 .... 3.65

19 ..... 2.95 .... 3.61 .... 4.83 .... 8.21 .. 11.69 .. 14.16 .. 16.10 .. 15.66 .. 13.16 .... 9.52 .... 4.67 .... 3.80

20 ..... 3.02 .... 3.52 .... 4.99 .... 8.49 .. 11.67 .. 14.21 .. 16.37 .. 15.32 .. 13.14 .... 9.66 .... 4.69 .... 3.19

21 ..... 2.96 .... 4.45 .... 5.47 .... 8.61 .. 11.46 .. 13.99 .. 15.54 .. 15.36 .. 12.83 .... 9.30 .... 4.80 .... 3.15

22 ..... 2.53 .... 5.01 .... 5.71 .... 8.40 .. 11.63 .. 14.24 .. 15.59 .. 15.26 .. 12.92 .... 9.19 .... 4.62 .... 2.90

23 ..... 2.29 .... 5.17 .... 5.46 .... 8.47 .. 11.75 .. 14.61 .. 15.93 .. 15.44 .. 12.53 .... 8.51 .... 4.56 .... 2.68

24 ..... 2.60 .... 4.80 .... 5.96 .... 8.75 .. 11.69 .. 15.23 .. 16.24 .. 15.38 .. 12.21 .... 8.58 .... 4.69 .... 2.24

25 ..... 2.38 .... 4.83 .... 5.67 .... 8.80 .. 12.22 .. 15.10 .. 15.91 .. 15.53 .. 11.85 .... 8.27 .... 4.85 .... 2.43

26 ..... 2.94 .... 3.99 .... 6.07 .... 9.06 .. 12.60 .. 14.66 .. 16.02 .. 14.98 .. 11.86 .... 8.29 .... 5.50 .... 2.98

27 ..... 3.74 .... 4.04 .... 6.03 .... 8.81 .. 12.64 .. 15.12 .. 15.88 .. 14.92 .. 11.70 .... 7.94 .... 4.46 .... 1.97

28 ..... 3.26 .... 3.65 .... 6.51 .... 9.28 .. 12.84 .. 14.84 .. 15.92 .. 14.80 .. 11.06 .... 7.73 .... 4.80 .... 3.41

29 ..... 3.03 .... 2.19* ... 6.68 .... 9.02 .. 12.50 .. 15.33 .. 16.35 .. 15.21 .. 11.27 .... 7.25 .... 5.45 .... 3.01

30 ..... 2.94 .... xxxx .... 6.73 .... 9.39 .. 11.96 .. 15.02 .. 16.55 .. 15.30 .. 11.50 .... 7.67 .... 5.06 .... 3.01

31 ..... 3.38 .... xxxx .... 6.48 .... xxxx .. 12.54 .. xxxxx .. 16.55 .. 14.62 .. xxxxx .... 8.08 .... xxxx .... 2.45

Month . 2.56 .... 3.88 .... 5.09 .... 7.85 .. 11.29 .. 14.09 .. 15.70 .. 15.56 .. 13.26 .... 9.54 .... 5.69 .... 3.28

<<>> ...JAN .... FEB .... MAR .... APR ....MAY .... JUN .... JUL .... AUG.... SEP .... OCT .... NOV ....DEC

* Leap year day had only 7 cases, as 1800 was not a leap year (so 1796, 1804,08,12,16,20,24)

____________________________________________

Not all days in the Dalton period were colder than the long-term. For example, the period 21-25 Feb ran as much as two-thirds of a degree warmer. The first ten days of May also ran warmer by about half a degree at times. The end of July ran almost a half degree warmer (although the first third of July was a degree colder at times). 15 to 23 September saw another warmer spell in the half degree range.

The colder winters were most evident in Dec-Jan rather than Feb, and the onset of these colder winters was marked by considerably colder weather around 3-6 November (over a degree below the long-term averages there). Another marked cooling took place 17-25 November which ran almost a degree lower than long-term. All of December ran consistently colder by an average of just about a full degree, the 8th-10th and 24th-27th were particularly cold. This much colder trend lasted through the January averages and faded out in February.

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The following tables for record daily mean temperatures have been edited to show CET legacy and v2.0 values. The CET legacy data set terminated at the end of April 2022. The first examples of new records after that occur on 18 and 19 July, see the July-August segment for a note on that situation. 

 

Jan-Feb daily records (Legacy) _____ Jan-Feb daily records (v2.0)

01 Jan ... 12.6 (2022) ... -5.9 (1820) ... ... ... 12.7 (2022) ... ... -5.9 (1820)

02 Jan ... 10.4 (1948) ... -6.1 (1786) ... ... ... 10.4 (1922,48) ... -6.1 (1786)

03 Jan ... 11.6 (1932) ... -7.7 (1795) ... ... ... 11.5 (1932) ... ... -7.7 (1795)

04 Jan ... 10.5 (1948) ... -9.3 (1867) ... ... ... 10.4 (1948) ... ... -9.0 (1867)

05 Jan ... 11.4 (1957) ... -6.5 (1789) ... ... ... 11.3 (1957) ... ... -6.5 (1789)

06 Jan ... 10.3 (1898) ... -6.9 (1894) ... ... ... 10.4 (1898) ... ... -7.0 (1894)

07 Jan ... 10.3 (1890) ... -7.7 (1841) ... ... ... 10.4 (1890) ... ... -7.7 (1841)

08 Jan ..... 9.9 (1858.)... -9.2 (1841) ... ... ... ..9.7 (1775,1858) .. -9.2 (1841)

09 Jan ... 10.7 (1998) ... -5.0 (1841) ... ... ... 10.6 (1998) ... ... -5.0 (1841)

10 Jan ... 11.1 (1921) ... -6.7 (1814) ... ... ... 11.2 (1921) ... ... -6.7 (1814)

11 Jan ... 10.1 (1990) ... -5.5 (1838) ... ... ... 10.1 (1990) ... ... -5.5 (1838)

12 Jan ... 9.9 (1976,2007) .. -7.7 (1987) ... ... 9.9 (1976,2007) .. -7.7 (1987)

13 Jan ...10.0 (1796,1873) .. -6.6 (1987) ... 10.0 (1796, 2007)^ .. -6.6 (1987)

14 Jan ... 10.2 (2011) ... -7.6 (1982) ... ... ... 10.2 (2011) ... ... -7.5 (1982)

15 Jan ... 10.3 (1804) ... -8.5 (1820) ... ... ... 10.3 (1804) ... ... -8.5 (1820)

16 Jan ... 10.8 (1990) ... -7.7 (1881) ... ... ... 10.8 (1990) ... ... -7.4 (1881)

17 Jan ... 10.2 (1908) ... -6.2 (1881) ... ... ... 10.2 (1908) ... ... -6.9 (1881)

18 Jan ... 10.0 (1828) ... -6.1 (1891) ... ... ... 10.0 (1828) ... ... -6.2 (1891)

19 Jan ... 11.1 (1930) ... -8.9 (1823) ... ... ... 11.2 (1930) ... ... -8.9 (1823)

20 Jan ... 11.2 (2008) .. -11.9 (1838) ... ... ...11.2 (2008) ... ...-11.9 (1838)

21 Jan ... 10.8 (1796,1898).. -8.1 (1881) ... 10.8 (1796)^... ... -8.0 (1881)

22 Jan ... 10.3 (1878) ... -6.4 (1881) ... ... ... 10.2 (1969)^ ... ... -6.5 (1881)

23 Jan ... 11.6 (1834) ... -8.4 (1963) ... ... ... 11.6 (1834) ... ... -8.4 (1963)

24 Jan ... 10.6 (1782) ... -8.2 (1963) ... ... ... 10.6 (1782) ... ... -8.2 (1963)

25 Jan ... 11.6 (2016) ... -8.9 (1795) ... ... ... 11.6 (2016) ... ... -8.9 (1795)

26 Jan ... 10.0 (1834) ... -7.6 (1945) ... ... ... 10.0 (1834) ... ... -7.6 (1945)

27 Jan ... 10.5 (2016) ... -6.5 (1776) ... ... ... 10.5 (2016) ... ... -6.5 (1776)

28 Jan ..... 9.8 (1944) ... -6.3 (1776) ... ... ... .. 9.7 (1944,1983)^ .. -6.3 (1776)

29 Jan ... 10.4 (1854) ... -6.8 (1776) ... ... ... 10.2 (1854,1966)^ .. -6.8 (1776)

30 Jan ... 10.2 (2000) ... -7.5 (1776) ... ... ... 10.2 (2000) ... ... -7.5 (1776)

31 Jan ... 10.9 (1868) ... -7.2 (1776) ... ... ... 10.7 (1868) ... ... -7.2 (1776)

01 Feb ... 11.4 (1923) ... -6.8 (1956) ... ... ... 11.1 (1923) ... ... -6.8 (1956)

02 Feb ... 11.0 (1923) ... -6.5 (1956) ... ... ... 10.9 (2002,2004)^.. -6.4 (1956)

03 Feb ... 12.2 (2004) ... -5.4 (1841,1956) ... 12.2 (2004) .. -5.4 (1841,1956)

04 Feb ... 12.8 (2004) ... -5.0 (1912) ... ... ... 12.8 (2004) ... ... -4.8 (1912)

05 Feb ... 11.8 (2004) ... -6.3 (1830) ... ... ... 11.8 (2004) ... ... -6.3 (1830)

06 Feb ... 10.3 (1866) ... -7.3 (1895) ... ... ... 10.3 (2011)^.. ... -7.2 (1895)

07 Feb ... 10.5 (1869) ... -7.2 (1895 & 1917) ... 10.4 (1869) .. -7.8 (1895)^

08 Feb ... 11.4 (1903) ... -8.3 (1895) ... ... ... 10.7 (1903) ... ... -8.5 (1895)

09 Feb ... 11.4 (1831) ... -8.8 (1816) ... ... ... 11.4 (1831,1903)^ .. -8.8 (1816)

10 Feb ... 12.0 (1899) ... -6.2 (1895) ... ... ... 12.1 (1899) ... ... -6.6 (1895)

11 Feb ... 11.4 (1939) ... -4.2 (1986) ... ... ... 11.4 (1939) ... ... -4.0 (1986)

12 Feb ... 11.4 (1998) ... -7.7 (1845) ... ... ... 11.3 (1998) ... ... -7.7 (1845)

13 Feb ... 12.0 (1998) ... -7.0 (1929) ... ... ... 11.9 (1998) ... ... -6.9 (1929)

14 Feb ... 10.2 (1794) ... -7.1 (1929) ... ... ... 10.2 (1794) ... ... -7.2 (1929)

15 Feb ... 11.2 (1958) ... -8.0 (1929) ... ... ... 13.7 (2024)^... ... -7.4 (1929)

16 Feb ... 10.3 (2022) ... -7.3 (1855) ... ... ... 10.5 (2022) ... ... -7.2 (1855)

17 Feb ... 10.7 (1878) ... -7.1 (1855) ... ... 11.3 (1878,2023)^ ... -7.0 (1855)

18 Feb ... 11.7 (1945) ... -3.9 (1855) ... ... ... 12.0 (2024)^... ... -3.9 (1855)

19 Feb ... 10.6 (1893) ... -5.0 (1777) ... ... ... 10.4 (1893) ... ... -5.0 (1777)^

20 Feb ... 11.3 (1990) ... -6.6 (1785) ... ... ... 11.3 (1990) ... ... -6.6 (1785)

21 Feb ... 11.2 (2019) ... -4.7 (1810) ... ... ... 11.3 (2019) ... ... -4.7 (1810)

22 Feb ... 10.7 (1953) ... -3.3 (1855) ... ... ... 10.6 (1953) ... ... -3.3 (1855)

23 Feb ... 11.7 (2012) ... -3.5 (1947) ... ... ... 11.8 (2012) ... ... -3.5 (1947)

24 Feb ... 11.4 (1846) ... -6.7 (1947) ... ... ... 11.5 (2021)^... ... -6.6 (1947)

25 Feb ... 11.0 (1922) ... -5.1 (1947) ... ... ... 10.9 (1922) ... ... -5.1 (1947)

26 Feb ... 11.2 (1882) ... -4.7 (1783) ... ... ... 10.9 (1882) ... ... -4.7 (1783)

27 Feb ... 11.5 (1828) ... -2.8 (1929) ... ... ... 11.5 (1828) ... ... -2.8 (1929)

28 Feb ... 11.4 (1959) ... -3.8 (1785) ... ... ... 11.4 (1959) ... ... -3.8 (1785) .. 2018 now -3.5

29 Feb ... 12.0 (1960) ... -2.4 (1904) ... ... ... 12.0 (1960) ... ... -2.0 (1904)

___________________________________________

^ notes: 

13 Jan 1873 lost tie with drop to 9.9, 2007 gained tie with increase 9.9 to 10.0 (1796 unchanged at 10.0)

21 Jan 1898 lost tie with drop to 10.7

22 Jan 1878 lost record to 1969 with drop to 9.8 from previous record 10.3 (1969 up from 10.2)

28 Jan 1983 gained tie as 1944 went from 9.8 to 9.7 (1983 unchanged at 9.7). 

29 Jan 1966 gained tie as 1854 went from 10.4 to 10.2 (1966 unchanged at 10.2). 

 2 Feb 2002,2004 gained tied record from 1923 which changed from 11.0 to 10.7 (2002,04 unchanged)

 6 Feb 1866 lost record to 2011. 1866 dropped from 10.3 to 10.2, 2011 went up from 10.1 to 10.3. (1989 to 10.2)

 7 Feb 1917 lost tied cold record with 1895, which went from -7.2 to -7.8 while 1917 went to -6.2. 

 9 Feb 1903 gained tie with 1831, increase from 11.2 to 11.4 (8 Feb 1903 held on to record despite 11.4 to 10.7 drop).

15 Feb 2024 broke 1958 (11.1) in v2.0. 

17 Feb 2023 tied 1878 in v2.0, would have broken the 1878 legacy value of 10.7.

18 Feb 2024 (12.0) broke 1945 (11.8) in v2.0.

19 Feb 1892 almost tied 1777 by moving from -4.7 to -4.9. Closest call for any new cold record (added rather than dropped).

24 Feb 2021 gained record (11.3 to 11.5) and 1846 lost it (11.4 unchanged). 

__________________________________________________

I looked at 1st March 2018 and it holds on despite a change from -3.8 to -3.7; it had the same change to 28 Feb where it was already 0.2 above the record and is now 0.3 above the 1785 record (-3.8) for 28 Feb (went from -3.6 to -3.5). 

 

Edited by Roger J Smith
new records 13.7 C on 15 Feb 2024 12.0 C 18 Feb 2024
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Mar-Apr daily records (Legacy) _____ Mar-Apr daily records (v2.0)

 

01 Mar ... 10.7 (1878.) ... -3.8 (2018.)... ...10.9 (1878.) .. -3.7 (2018.)
02 Mar ... 11.1 (1777) ... -3.2 (1965) ... ... 11.1 (1777) ... -3.1 (1965)
03 Mar ... 11.0 (1777) ... -3.9 (1965) ... ... 11.0 (1777) ... -3.8 (1965)
04 Mar ... 12.3 (1859) ... -2.9 (1909) ... ... 12.3 (1859) ... -2.8 (1845)^
05 Mar ... 10.9 (1834) ... -2.8 (1786&1909) .. 10.9 (1834) .. -2.8 (1786)^

06 Mar ... 12.0 (1989) ... -4.7 (1786) ... ... 12.0 (1989) ... -4.7 (1786)
07 Mar ... 10.9 (1875) ... -3.3 (1947) ... ... 10.8 (2014)^ .. -3.3 (1947)
08 Mar ... 12.2 (2000) ... -3.1 (1786) ... ... 12.1 (2000) ... -3.1 (1786)
09 Mar ... 12.4 (1948) ... -3.0 (1917) ... ... 12.5 (1948) ... -2.6 (1917)
10 Mar ... 11.6 (1957) ... -2.4 (1883) ... ... 11.5 (1957) ... -2.1 (1883)

11 Mar ... 12.6 (1957) ... -1.9 (1847) ... ... 12.6 (1957) ... -1.9 (1847)
12 Mar ... 13.4 (1957) ... -2.4 (1785) ... ... 13.4 (1957) ... -2.4 (1785)
13 Mar ... 12.8 (1991) ... -6.5 (1845) ... ... 12.8 (1991) ... -6.5 (1845)
14 Mar ... 11.5 (1805) ... -3.7 (1845) ... ... 12.1 (2024)^... -3.7 (1845)
15 Mar ... 11.9 (1884) ... -1.6 (1867) ... ... 12.0 (1884) ... -1.5 (1845&1867)^

16 Mar ... 13.2 (2004) ... -3.0 (1845) ... ... 13.2 (2004) ... -3.0 (1845)
17 Mar ... 13.2 (2005) ... -2.2 (1845) ... ... 13.1 (2005) ... -2.2 (1845)
18 Mar ... 14.1 (1990) ... -1.3 (1853) ... ... 14.2 (1990) ... -1.1 (1853)^
19 Mar ... 11.8 (1822) ... -0.9 (1814) ... ... 11.8 (1822) ... -0.9 (1814)
20 Mar ... 12.3 (1779) ... -1.6 (1845) ... ... 12.3 (1779,2024) ... -1.6 (1845)

21 Mar ... 11.7 (1927,31) ... -1.6 (1899) ... 11.7 (1927,31,2002)^ ... -1.6 (1899) 
22 Mar ... 12.6 (1903) ... -0.9 (1837) ... ... 12.2 (1927)^ ... -0.9 (1837)
23 Mar ... 12.1 (1852,1945) .. -0.8 (1837&1899) .. 12.4 (1886)^ .. -0.8 (1837)^
24 Mar ... 13.4 (1776) ... -0.6 (1879) ... ... 13.4 (1776) ... -0.6 (1879)
25 Mar ... 13.9 (1777) ... -1.3 (1853) ... ... 13.9 (1777) ... -1.1 (1853)

26 Mar ... 14.6 (1777) ... -0.3 (1879&1901) .. 14.6 (1777) ... -0.3 (1879)^
27 Mar ... 14.8 (1777)..... 0.1 (1901) ... ... 14.8 (1777) ... -0.1 (1901)^
28 Mar ... 12.6 (1822,1998.) .. -0.3 (1785) ... 12.6 (1822)^ .. -0.3 (1785)
29 Mar ... 13.4 (1813) ... -0.7 (1785) ... ... 13.4 (1813) ... -0.7 (1785)
30 Mar ... 15.1 (2017)..... 0.0 (1799) ... ... 15.2 (2017) ... 0.0 (1799)

31 Mar ... 14.3 (2021) ... -0.8 (1799) ... ... 14.4 (2021) ... -0.8 (1799)


01 Apr ... 13.3 (1995) ... -0.2 (1917) ... ... 13.4 (1995) ... 0.0 (1799, 1917)^
02 Apr ... 13.9 (1835) ... -0.5 (1917) ... ... 13.9 (1835) ... -0.4 (1917)^
03 Apr ... 15.0 (1926&1946) .. -0.5 (1799) ... 15.0 (1946)^ .. -0.5 (1799)^
04 Apr ... 15.6 (1946)..... 1.0 (1809&1830) .. 15.6 (1946) ... 1.0 (1809, 1830)
05 Apr ... 13.3 (1857) ..... 0.4 (1911) ... ... 13.2 (1857) ... 0.5 (1911)

06 Apr ... 15.1 (2011) ..... 0.8 (1911) ... ... 15.2 (2011) ... 0.8 (1911)
07 Apr ... 14.7 (1859) ..... 1.0 (1839) ... ... 14.5 (1859) ... 1.0 (1839)
08 Apr ... 13.0 (2020) ..... 2.4 (1780) ... ... 13.1 (2020) ... 2.4 (1780)
09 Apr ... 13.7 (2017) ..... 1.4 (1812) ... ... 13.8 (2017) ... 1.4 (1812)
10 Apr ... 14.1 (2020) ..... 0.5 (1837) ... ... 14.1 (2020) ... 0.5 (1837)

11 Apr ... 16.0 (1869) ..... 1.3 (1978) ... ... 15.9 (1869) ... 1.3 (1978)
12 Apr ... 14.4 (1939) ..... 1.1 (1879) ... ... 14.5 (1939) ... 1.1 (1879)
13 Apr ... 14.6 (1792) ..... 1.1 (1816) ... ... 14.6 (1792) ... 1.1 (1816)
14 Apr ... 16.1 (1869) ..... 0.5 (1966) ... ... 15.9 (1869) ... 0.5 (1966)
15 Apr ... 16.3 (1945) ..... 1.4 (1966) ... ... 16.3 (1945) ... 1.5 (1966)^

16 Apr ... 17.0 (1945) ..... 2.0 (1892) ... ... 17.1 (1945) ... 2.2 (1837, 1892)^
17 Apr ... 14.9 (1865) ..... 2.1 (1793&1812) .. 14.8 (1865,2003)^ .. 2.1 (1793,1812)
18 Apr ... 17.0 (2018.)..... 1.7 (1807) ... ... 17.0 (2018.) ... 1.7 (1807)
19 Apr ... 17.6 (2018.) ... -0.2 (1772) ... ... 17.7 (2018.) ...-0.2 (1772)
20 Apr ... 16.6 (1893) ..... 2.3 (1849) ... ... 16.7 (1893) ... 2.3 (1849)

21 Apr ... 16.1 (1893) ..... 2.4 (1936) ... ... 15.8 (1893) ... 2.4 (1936)
22 Apr ... 15.4 (2011) ..... 3.4 (1778.) ... ... 15.4 (2011) ... 3.4 (1778.)
23 Apr ... 15.9 (1874) ..... 2.6 (1908.) ... ... 15.9 (2011)^ .. 2.5 (1908.)
24 Apr ... 15.3 (2007) ..... 0.5 (1908.) ... ... 15.4 (2007) ... 0.6 (1908.)
25 Apr ... 15.9 (1821) ..... 1.8 (1908.) ... ... 15.9 (1821) ... 1.8 (1908.)

26 Apr ... 16.1 (1928) ..... 3.3 (1981) ... ... 15.9 (1821)^ .. 3.4 (1981)
27 Apr ... 16.5 (1866) ..... 2.7 (1919) ... ... 16.3 (1866) ... 2.8 (1919)
28 Apr ... 16.9 (1775) ..... 3.0 (1826) ... ... 16.9 (1775) ... 3.0 (1826)
29 Apr ... 19.7 (1775) ..... 0.7 (1856) ... ... 19.7 (1775) ... 0.7 (1856)
30 Apr ... 17.4 (1775) ..... 2.6 (1945) ... ... 17.4 (1775) ... 2.7 (1945)

_______________________________________

^ Notes: 

 4 Mar 1909 loses record to 1845, 1909 incr -2.9 to -1.9, 1845 stayed at -2.8. 

 5 Mar 1909 loses tied record, incr -2.8 to -2.1 (1786 stayed -2.8)

 7 Mar 1875 loses record to 2014, as it decr from 10.9 to 10.7, 2014 incr 10.7 to 10.8.

14 Mar 2024 gains v2.0 record (1805 was at 11.5).  15 Mar 2024 was 11.7 (not a record). 

15 Mar 1845 gains tie with 1867, which was increased from -1.6 to -1.5 (1845 stayed at that value).

18 Mar 1853 retains sole record as 2018 which was -1.1 in legacy CET increased to -1.0.

21 Mar 1927,1931 tie added 2002 as third tie, when it increased from 11.6 to 11.7 (the others stayed unchanged). 

22 Mar 1927 gained record from 1903 which decreased from 12.6 to 12.0, while 1927 went from 12.3 to 12.2.

23 Mar 1886 new record high, the former value 11.4 was increased by 1.0 to 12.4; the formerly tied 1852, 1945 each stayed at 12.1).

23 Mar 1899 lost share of record when it was increased from -0.8 to -0.6, 1837 stayed at -0.8 to retain full record status.

26 Mar 1901 lost share of record when it was increased from -0.3 to -0.2, 1879 stayed at -0.3 to retain full record status.

27 Mar 1901 retained record but with the decrease to -0.1 from +0.1, that pushes back the first non-negative record to 30th March, and the first positive value to 4th of April.

28 Mar 1998 lost share of record with 1822, when its value was adjusted down from 12.6 to 12.5 (1822 stayed at 12.6). 

 1 Apr 1917 became tied with 1799 as its previous value of -0.2 was adjusted to 0.0 (which 1799 had before).

 2 Apr 1917 lost the status of tied record monthly low (-0.5) when it was adjusted to -0.4 (daily record retained).

 3 Apr 1926 lost share of record with 1946, when its value was adjusted down from 15.0 to 14.7 (1946 stayed at 15.0)

 3 Apr 1799 now sole owner of the April monthly record of -0.5 (formerly tied with 2 Apr 1917). 

15 Apr 1892 was also 1.5 in legacy (where 1966 was 1.4) but increased to 1.9 to stay out of the record tie. 

16 Apr 1892 fell back into a tie with 1837 when it was adjusted up from 2.0 to 2.2 (1837 stayed at 2.2). 

17 Apr 2003 gained a tie with 1865, as 1865 was adjusted down from 14.9 to 14.8 (2003 remained at 14.8).

23 Apr 1874 lost record to 2011. 1874 was adjusted down 14.9 to 14.7, 2011 went up from 14.8 to 14.9. 

26 Apr 1821 gained a record (15.9) when 1928 was adjusted down from 16.1 to 15.7. 

________________________________

also of interest, 31 Mar 1859, which had been lurking at -0.5, was adjusted up to -0.3. (record -0.8 1799)

and by staying at 0.5, 14 Apr 1966 kept 0.6 from 14 Apr 1816 out of the records.

 

 

Edited by Roger J Smith
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note: May 1, 2022 _ legacy CET discontinued

 

May-Jun daily records (Legacy) _____ May-Jun daily records (v2.0)

01 May ... 16.1 (1990, 2005) .. 4.2 (1866) ... 16.0 (1990, 2005) .. 4.2 (1945)^
02 May ... 16.4 (1966) .... 3.8 (1979) ... ... 16.4 (1966) ... 3.7 (1979)
03 May ... 17.7 (1990) .... 3.1 (1877) ... ... 17.6 (1990) ... 3.2 (1877)
04 May ... 18.0 (1834) .... 3.2 (1877) ... ... 18.0 (1834) ... 3.2 (1877)
05 May ... 16.7 (1800) .... 4.0 (1979) ... ... 16.7 (1800) ... 3.9 (1979)

06 May ... 18.8 (1867) .... 4.4 (1831) ... ... 18.6 (1867) ... 4.4 (1831)
07 May ... 16.9 (2018.) ... 4.1 (1879) ... ... 17.0 (2018.) ... 3.8 (1879)
08 May ... 17.8 (2016) .... 2.9 (1861) ... ... 17.7 (2016) ... 3.1 (1861)^
09 May ... 17.6 (1945&2016) .. 5.7 (1837) .. 17.6 (1945&2016) .. 5.1 (1910)^
10 May ... 18.2 (1959) .... 4.1 (1879) ... ... 18.2 (1959) ... 4.2 (1879)

11 May ... 18.6 (2008) .... 4.1 (1773) ... ... 18.7 (2008) ... 4.1 (1773)
12 May ... 18.8 (1945) .... 4.4 (1816) ... ... 18.8 (1945) ... 4.4 (1816)
13 May ... 17.4 (1959) .... 5.0 (1915) ... ... 17.4 (1959) ... 5.1 (1855)^ 
14 May ... 18.8 (1992) .... 3.9 (1839) ... ... 18.8 (1992) ... 3.9 (1839)
15 May ... 20.0 (1833) .... 4.3 (1839) ... ... 20.0 (1833) ... 4.3 (1839)

16 May ... 20.0 (1808) .... 5.2 (1996) ... ... 20.0 (1808) ... 5.2 (1996)
17 May ... 19.7 (1833) .... 3.6 (1935) ... ... 19.7 (1833) ... 3.6 (1935)
18 May ... 19.1 (1952) .... 4.1 (1872) ... ... 19.0 (1952) ... 4.2 (1872)
19 May ... 20.4 (1868) .... 5.2 (1872) ... ... 20.3 (1868) ... 5.3 (1872)
20 May ... 17.5 (1916) .... 5.5 (1907) ... ... 17.7 (1916) ... 5.8 (1894)^

21 May ... 18.8 (1916) .... 5.7 (1894) ... ... 18.8 (1918)^ .. 5.7 (1894)
22 May ... 19.5 (1918) .... 5.0 (1867) ... ... 19.6 (1918) ... 5.1 (1867)
23 May ... 19.5 (1922) .... 4.9 (1867) ... ... 19.5 (1922) ... 5.0 (1867)
24 May ... 18.8 (1953) .... 5.7 (1867) ... ... 18.8 (1953) ... 5.7 (1867)
25 May ... 21.0 (1953) .... 6.5 (1814) ... ... 20.9 (1953) ... 6.5 (1814)

26 May ... 18.7 (1784&2017) .. 4.6 (1821) .. 18.7 (1784&2017) .. 4.6 (1821)
27 May ... 19.0 (1788) .... 6.6 (1984) ... ... 19.0 (1788) ... 6.7 (1984)
28 May ... 20.6 (1847) .... 6.2 (1869) ... ... 20.6 (1847) ... 6.3 (1869)
29 May ... 21.2 (1780) .... 6.2 (1869) ... ... 21.2 (1780) ... 6.3 (1869)
30 May ... 21.0 (1944) .... 4.9 (1807) ... ... 21.0 (1944) ... 4.9 (1807)

31 May ... 20.5 (1947) .... 6.4 (1802) ... ... 20.5 (1947) ... 6.4 (1802)


01 Jun ... 20.9 (1781) .... 7.7 (1802&1962) ... 20.9 (1781&1947)^.. 7.7 (1802&1962)
02 Jun ... 22.3 (1947) .... 7.6 (1991) ... ... 22.3 (1947) ... 7.4 (1991)
03 Jun ... 23.0 (1947) .... 7.9 (1773) ... ... 22.9 (1947)^.. 7.9 (1773)
04 Jun ... 20.3 (1982) .... 8.0 (1871&1991) .. 20.2 (1804, 1982)^.. 8.0 (1991)^
05 Jun ... 21.3 (1982) .... 8.2 (1991) ... ... 21.2 (1982) ... 8.1 (1991)

06 Jun ... 22.5 (1950) .... 8.4 (1909) ... ... 22.4 (1950) ... 8.3 (1909)
07 Jun ... 21.6 (1846) .... 8.6 (1814) ... ... 21.6 (1846) ... 8.6 (1914)
08 Jun ... 20.4 (1940) .... 8.6 (1881&1914) .. 20.2 (1940) .. 8.2 (1881)^
09 Jun ... 20.9 (1970) .... 7.3 (1816) ... ... 20.9 (1970) ... 7.3 (1816)
10 Jun ... 21.5 (1970) .... 8.2 (1821) ... ... 21.5 (1970) ... 8.2 (1821,1881)

11 Jun ... 21.0 (1970) .... 8.0 (1777) ... ... 21.0 (1970) ... 8.0 (1777)
12 Jun ... 20.8 (2006)^... 8.6 (1841) ... ... 21.7 (2023)^ ... 8.6 (1841)
13 Jun ... 20.5 (1818&1989) .. 8.5 (1901) ... 20.9 (2023)^ .. 8.6 (1801)^
14 Jun ... 19.4 (1814) .... 7.9 (1903) ... ... 19.4 (1814) ... 8.3 (1903)
15 Jun ... 22.9 (1858) .... 8.1 (1850) ... ... 22.7 (1858)^... 8.1 (1850)

16 Jun ... 20.7 (1858&1896) .. 9.6 (1869) ... 20.7 (1858&1896) .. 9.7 (1869)
17 Jun ... 21.4 (1917) .... 9.1 (1928) ... ... 21.3 (1917) ... 9.3 (1928)
18 Jun ... 21.2 (2005) .... 8.1 (1855) ... ... 22.2 (2005) ... 8.2 (1855)
19 Jun ... 22.1 (2005) .... 7.3 (1795) ... ... 23.2 (2005) ... 7.3 (1795)
20 Jun ... 21.7 (1846) .... 9.0 (1795&1964) .. 21.7 (1846) .. 9.0 (1795&1964)

21 Jun ... 22.7 (1817) .... 9.8 (1903) ... ... 22.7 (1817) ... 9.3 (1903)
22 Jun ... 22.3 (1941) .... 9.0 (1823) ... ... 22.3 (1941) ... 9.0 (1823)
23 Jun ... 21.8 (1935) .... 9.4 (1823) ... ... 21.8 (1935) ... 9.4 (1823)
24 Jun ... 22.0 (1935) .. 10.1 (1784) ... ... 22.1 (1935) ...10.1 (1784)
25 Jun ... 22.6 (2020) .... 8.7 (1835) ... ... 22.6 (2020) ... 8.7 (1835)

26 Jun ... 22.3 (1976) .... 9.7 (1835) ... ... 22.2 (1976) ... 9.7 (1835)
27 Jun ... 22.8 (1826) .. 10.2 (1862) ... ... 22.8 (1826) .. 10.3 (1835, 1862, 1981)^
28 Jun ... 22.6 (1976) .... 9.4 (1812) ... ... 22.5 (1976) ... 9.4 (1812)
29 Jun ... 22.4(1976) .... 9.7 (1839) ... .... 22.3 (1976) ... 9.7 (1839)
30 Jun ... 22.1 (1976) .... 9.1 (1839) ... ... 22.0 (1976) ... 9.1 (1839)

____________________________________

^ Notes:

 1 May 4.2 (1866) loses record to 4.2 (1945), previously they had been 4.2, 4.3, now reversed. 

 8 May 3.1 (1861) is still the monthly record low daily mean (was 2.9 in legacy) but retained it only because 3 May 1877 incr 3.1 to 3.2. 

 9 May 1910 (5.2) gained a record with a decrease from 5.8 in legacy CET, while 1837 stayed at 5.7 and lost its record. 

13 May 1855 (5.1) gained a record by remaining at 5.1 while 1915 increased from 5.0 to 5.4.

20 May 1894 (5.8) gained a record with a decrease from 6.0 while 1907 went up from 5.5 to 6.2, losing its record. 

21 May 1916 (18.5) lost a record with a decrease from 18.8, while 1918 gained the record by gaining 0.2 from 18.6 to 18.8.

 1 June 1947 (20.9) moved into a tie with 1781 with an increase from 20.8 (1781 unchanged). 

 3 June 1947 (22.9) no longer warmest June daily mean (was 23.0) as 19 June 2005 boosted 1.0 from 22.2 to 23.2. 

 4 June 1804 (20.2) gained a tie with 1982 when 1982 decr from 20.3 to 20.2 (1804 unchanged). 

 4 June 1991 (7.8) now sole owner of record low as 1871 adjusted from 8.0 to 8.1, while 1991 decr 8.0 to 7.8. 

 8 June 1914 (8.3) moved out of a tie, it had a decrease from 8.6 but 1881 went even lower from 8.6 to 8.2. 

12 June 2023 (21.7) replaces 2006 (20.8 in v2.0), remains legacy max due to CET legacy being discontinued. 

13 June 1989 (20.7) lost share of tie with 1818, decrease from 20.5 to 20.4 (1818 remains 20.5). see next note

13 June 2023 (20.9) replaces v2.0 record from 1818; 1818,1989 remain legacy max due to CET legacy being discontinued.

13 June 1801 (8.6) new record low, as previous 8.5 (1901) increased to 8.8. 

15 June 1858 (22.7) was recently revised (22.8 in v2.0), in v2.0.1.0 

19 June 2005 (23.2) boosted 1.0 from 22.2 to 23.2, now warmest daily mean in June (see note 3 June 1947). 

27 June 1862 (10.3) now tied by both 1835 (was 10.3) and 1981 (was 10.4), as 1862 was adjusted up from 10.2.  

--------------------

(comments on near misses and notables)

1 May 1958 was 15.9 and remains 15.9, closer to the 1990-2005 tie but still not a record. 

 7 May 2008 now 16.9 (was 16.8), moving up 0.1 as did 2018 with the new record now 17.0.

24 May 1814 (5.8) remains 0.1 above 1867 record, a tie would have resulted if the same corrections to 22-23 May 1867 had applied to 24th.

25 and 26 May 2012 unchanged at 18.3, 18.4. (24th up from 17.9 to 18.0). 

29 May 1944 (21.1) unchanged, and remains 0.1 behind 21.2 same date 1780, which retains warmest value for May.

30 May 1855 (5.8) also unchanged, held out of the records by exceptional 4.9 (1807). 

31 May 1975 (7.1) unchanged (was not a record before but very cold "recent" late May reading.

 7 June 1985 (8.7) moved 0.1 closer to 1814 record (8.6) with adjustment from 8.8 to 8.7. 

 8 June 1970 (20.1) edged within 0.1 of 1940 record due to its decrease from 20.4 to 20.2. Next three days remain 1970 records. 

19, 21 June 2017 are now 21.7, 21.8 (were 21.7, 21.9). (not records)

27 June 1878 decr from 22.7 to 22.4 (was closer to 1826 record before, now tied with 1976). 

27 June 2011 decr from 22.0 to 21.9. 

 

Edited by Roger J Smith
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Jul-Aug daily records (Legacy) _____ Jul-Aug daily records (v2.0)

01 Jul ... 24.6 (2015) ... 10.4 (1773) ... ... 24.7 (2015) ... 10.4 (1773)
02 Jul ... 22.8 (1976) ... 11.3 (1821) ... ... 22.8 (1976) ... 11.3 (1821)
03 Jul ... 24.6 (1976) ... 10.1 (1907) ... ... 24.4 (1976) ... 10.1 (1907)
04 Jul ... 24.7 (1976) ... 10.0 (1965) ... ... 24.5 (1976) ... 10.0 (1965)
05 Jul ... 24.0 (1852) ... 10.7 (1920) ... ... 24.0 (1852) ... 11.2 (1816&1920)

06 Jul ... 23.3 (1976) ... 11.3 (1877) ... ... 23.2 (1976) ... 11.3 (1877)
07 Jul ... 22.6 (1923&1976) .. 11.1 (1877) ...  22.7 (1923)^ ... 11.1 (1877)
08 Jul ... 21.4 (1870&1976) .. 10.6 (1823) ... 21.4 (1870)^ ... 10.6 (1823)
09 Jul ... 21.6 (1921) ... 11.0 (1856) ... ... 21.6 (1921) ... 11.0 (1856)
10 Jul ... 22.1 (1921) ... 11.2 (1993) ... ... 22.2 (1921) ... 11.1 (1993)

11 Jul ... 22.6 (1783) ..... 9.4 (1888) ... ... 22.6 (1783) .... 9.0 (1888)
12 Jul ... 23.7 (1923) ... 11.0 (1840) ... ... 23.6 (1923) ... 11.0 (1840)
13 Jul ... 24.5 (1808) ... 10.2 (1840) ... ... 24.5 (1808) ... 10.2 (1840)
14 Jul ... 24.4 (1808) ... 11.7 (1961) ... ... 24.4 (1808) ... 11.7 (1961)
15 Jul ... 23.7 (1825) ... 11.5 (1883) ... ... 23.7 (1825) ... 11.4 (1883)

16 Jul ... 22.7 (2003) ... 11.5 (1823) ... ... 22.5 (2003) ... 11.5 (1823)
17 Jul ... 22.3 (1834) ... 11.0 (1892) ... ... 22.3 (1834) ... 11.2 (1892)
18 Jul ... 23.3 (1825)*... 10.1 (1863) ... ... 24.4 (2022) ... 10.1 (1863)
19 Jul ... 24.5 (2006)*... 10.6 (1892) ... ... 28.1 (2022) ... 10.6 (1892)
20 Jul ... 23.5 (2016) ..... 8.7 (1836) ... ... 23.6 (2016) .... 8.7 (1836)

21 Jul ... 23.1 (1868) ... 11.3 (1902) ... ... 23.1 (1868) ... 11.3 (1902)
22 Jul ... 23.2 (1868) ... 11.5 (1902) ... ... 23.1 (1868) ... 11.4 (1902)
23 Jul ... 22.5 (2019) ... 10.1 (1843) ... ... 22.6 (2019) ... 10.1 (1843)
24 Jul ... 23.9 (1818) ... 11.1 (1843) ... ... 23.9 (1818) ... 11.1 (1843)
25 Jul ... 25.2 (2019) ... 10.9 (1920) ... ... 25.3 (2019)^ .. 11.2 (1920)

26 Jul ... 23.2 (2006) ... 11.0 (1884) ... ... 23.3 (2006) ... 11.0 (1884)
27 Jul ... 22.5 (2018.) ...10.6 (1867) ... ... 22.7 (2018.) ... 10.6 (1867)
28 Jul ... 23.7 (1948) ... 11.8 (1886&1891) ..23.7 (1948) ... 11.6 (1886)^  
29 Jul ... 25.2 (1948) ... 11.0 (1816) ... ... 25.1 (1948) ... 11.0 (1816)
30 Jul ... 23.1 (1948) ... 10.6 (1786) ... ... 23.1 (1948) ... 10.6 (1786)

31 Jul ... 23.7 (2020)..... 10.9 (1841) ... ... 23.8 (2020) ... 10.9 (1841)


01 Aug ... 24.9 (1995) ... 11.9 (1888) ... ... 24.8 (1995) ... 11.9 (1888&1907)^
02 Aug ... 24.6 (1995) ... 11.6 (1822) ... ... 24.6 (1995) ... 10.9 (1912)^
03 Aug ... 24.4 (1990) ... 10.5 (1912) ... ... 24.4 (1990) ... 10.8 (1912)
04 Aug ... 23.4 (1975) ... 11.3 (1812) ... ... 23.4 (1975) ... 11.3 (1812)
05 Aug ... 23.1 (2003) ... 11.3 (1812) ... ... 23.1 (2003) ... 11.3 (1812)

06 Aug ... 22.5 (2003) ... 11.2 (1823&1860) ..22.5 (2003) ... 11.1 (1860) 
07 Aug ... 22.8 (1975) ... 11.6 (1898) ... ... 22.8 (1975) ... 11.6 (1898)
08 Aug ... 23.7 (1975) ... 11.5 (1823) ... ... 23.8 (1975) ... 11.5 (1823)
09 Aug ... 23.9 (2003) ... 11.0 (1931) ... ... 23.9 (2003) ... 10.9 (1931)
10 Aug ... 22.5 (1773&1997) .. 10.8 (1892) ...22.6 (1997)^.. 11.0 (1892)

11 Aug ... 24.0 (2020) ... 10.8 (1902) ... ... 24.2 (2020) ... 10.6 (1902)
12 Aug ... 25.1 (2020) ... 10.5 (1912) ... ... 25.2 (2020) ... 10.3 (1912)
13 Aug ... 23.6 (1911) ... 10.5 (1881) ... ... 23.9 (1911) ... 10.6 (1881)
14 Aug ... 21.3 (1911) ... 10.8 (1912) ... ... 23.6 (2022)*... 11.0 (1912)
15 Aug ... 22.1 (1893) ... 10.3 (1829) ... ... 21.7 (1893) ... 10.3 (1829)

16 Aug ... 21.6 (1947) ..... 9.5 (1888) ... ... 21.6 (1947) .... 9.9 (1810)^
17 Aug ... 22.4 (1876) ... 10.9 (1888) ... ... 22.4 (1876) ... 10.9 (1888)
18 Aug ... 22.6 (1893) ... 10.3 (1830) ... ... 22.1 (1947)^.. 10.3 (1830)
19 Aug ... 22.8 (1932) ... 10.4 (1839) ... ... 22.8 (1932) ... 10.4 (1839)
20 Aug ... 21.9 (1995) ... 10.5 (1920) ... ... 21.9 (1995) ... 10.2 (1920)

21 Aug ... 21.6 (1984) ..... 9.8 (1850) ... ... 21.6 (1984) .... 9.8 (1850)
22 Aug ... 22.1 (1955) ... 10.4 (1817) ... ... 22.1 (1955) ... 10.4 (1817)
23 Aug ... 22.1 (1955) ... 10.3 (1877) ... ... 22.1 (1955) ... 10.4 (1877)
24 Aug ... 21.5 (1990) ..... 9.1 (1864) ... ... 21.4 (1955&1990)^.. 9.1 (1864)
25 Aug ... 21.7 (2019) .. 10.5 (1787,1843&64) .. 21.8 (2019) .. 10.5 (1787,1843&64)


26 Aug ... 20.6 (1869) .... 8.8 (1864) ... ... 20.6 (1869) .... 8.8 (1864)
27 Aug ... 22.8 (1930) ... 11.0 (1885&1890) .. 23.1 (1930) ... 11.1 (1785&1896)^ 
28 Aug ... 23.0 (1942) ... 10.5 (1919) ... ... 23.0 (1942) ... 10.1 (1912)^
29 Aug ... 22.6 (1930) ....10.1 (1812) ... ... 22.2 (1930) .... 10.1 (1812)
30 Aug ... 19.8 (1804&2008) ... 9.5 (1890) ... 19.9 (2008)^.. 9.6 (1890)

31 Aug ... 21.3 (1906) ..... 9.2 (1833) .., ... 21.3 (2005)^... 9.2 (1833)
 _________________________________________________

^ Notes:

 5 July ... 1816 gained share with 1920 when 1920 incr 0.5 from 10.7 to 11.2 (1816 remained 11.2). 

 7 July ... 1976 lost share of tie with 1923, decr 22.6 to 22.4, while 1923 incr 22.6 to 22.7.

 8 July ... 1976 lost share of tie with 1870, decr 21.4 to 21.2, while 1870 remained 21.4.

18 and 19 July __ no updated legacy CET values (series discontinued) 19th highest of data set for v2.0

25 July ... 2019 now warmest day of the data set, incr 0.1 from 25.2 (while 1948 29 July went down 0.1 to 25.1).

28 July ... 1886 gained sole record with decr from 11.8 to 11.6 while 1891 incr 11.8 to 12.0.

29 July ... 1948 (25.1) lost share of warmest day all-time, decr 25.2 to 25.1, while 25 July 2019 incr 25.2 to 25.3. These were all replaced by the 28.1 value on 19 July 2022.

 1 Aug ... 1907 (11.9) decr 0.1 from 12.0 (legacy CET), gained share of tied record with 1888 (unchanged).

 2 Aug ... 1912 (10.9) gains record with 0.8 decr from 11.7, 1822 loses record as it remains 11.6. 

 6 Aug ... 1860 (11.1) gains sole record with 0.1 decr from 11.2, while 1823 loses share as it remains 11.1.

10 Aug ... 1773 lost share of tie with 1997, when 1997 incr 22.5 to 22.6; 1773 remained 22.5.

14 Aug ... 23.6 in 2022 replaced 21.7 from 1911 in v2.0

16 Aug ... 1810 gained record (9.9) when 1888 incr by 1.1 from 9.5 to 10.6.

18 Aug ... 1893 lost record when 22.6 decr to 22.0, 1947 remained 22.1 for the new record.

24 Aug ... 1955 gained tie with 1990 when 1990 decr 21.5 to 21.4, 1955 remained 21.4. 

27 Aug ... 1785, 1896 (11.1) new tied pair replace 1885, 1890 which both increased, to 11.5 and 11.2.

28 Aug ... 1912 gains record with decr of 0.7 from 10.8 to 10.1; 1919 went from 10.5 to 10.4. 

30 Aug ... 1804 lost share of tie with 2008 which incr 0.1 from 19.8 to 19.9 (1804 remained 19.8).

31 Aug ... 2005 gains record with boost from 20.9 to 21.3, while 1906 loses record with decr from 21.3 to 20.8.

_______________________

Record cold near misses

1813 4 July remains 10.4, record was 10.1 now 9.9 (1907).

1838 22 July remains 11.6.

1812 23 July remains 10.7.

1841 12 Aug remains 10.7.

1845 21 Aug remains 10.2. 1986 21 Aug remains 11.0.

1813 23 Aug remains 10.6

 

Non-record hot days with changes (if any)

 6 July ... 1957 remains 22.3

12 July ... 1983 remains 22.6

13 July ... 1923 remains 24.0, 1983 down 0.1 from 22.7 to 22.6, 1926 up 0.1 to 22.0

14 July .,. 1926 up 0.2 from 22.1 to 22.3.

16 July ... 1983 22.4 down 0.1 from 22.5 (legacy CET) which is now record (2003).

19 July ... 2016 up 0.1 to 23.1.

20 July 1878 ... down 1.1 from 22.9 to 21.8, 1900 up 0.3 to 22.3

21 July 1989 ... 22.6 down 0.1 from 22.7 (legacy CET).

22 July 1989 ... 23.0 down 0.1 from 23.1 (legacy CET).

22 July 2021 ... up 0.1 from 22.2 to 22.3, and 2013 up 0.1 to 21.7

23 July 1989 ... 22.3 down 0.1 from 22.4 (legacy CET).

24 July 2019 ... up 0.1 from 23.1 to 23.2.

29 July 1911 _ now 23.2 from 23.4 (legacy CET)

31 July 1943, 1995 _ now tied 23.3, both were 23.4 in legacy CET.

 1 Aug 2013 ... 22.8, up 0.1 from 22.7 (legacy CET)

 2 Aug 1990 ... 23.8, down 0.1 from 23.9 (legacy CET).

 5 Aug 1868 ... 22.5 (no change)

11 Aug 1997 _ 22.6 (no change)

19 Aug 1997 _ 22.2 up 0.1 from 22.1 (legacy CET) and 1995 down 22.1 to 22.0.

28 Aug 1930 ... now 22.3 from 22.4 (legacy CET).

 

 

Edited by Roger J Smith
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Sep-Oct daily records (Legacy) _____ Sep-Oct daily records (v2.0)

01 Sep ... 21.8 (1780&1906) .. 7.1 (1816) ... 22.0 (1906)^.. 7.1 (1816)
02 Sep ... 22.6 (1906) .... 7.6 (1816) ... ... 22.3 (1906)^ .. 7.6 (1816)
03 Sep ... 20.2 (1880) .... 8.2 (1816&1908) .. 19.8 (1880) .. 8.2 (1816)^
04 Sep ... 20.7 (1880) .... 7.7 (1841) ... ... 20.6 (2005)^ .. 7.7 (1841)
05 Sep ... 22.4 (1949) .... 8.1 (1841) ... ... 22.4 (1949)^ .. 8.1 (1841)

06 Sep ... 20.8 (1898) .... 8.5 (1841) ... ... 21.1 (2023)^ ... 8.5 (1841)
07 Sep ... 21.1 (1868) .... 8.6 (1952) ... ... 23.3 (2023)^ ... 8.1 (1952)
08 Sep ... 21.4 (2021) .... 8.9 (1807&1931) .. 22.0 (2023)^ .. 8.8 (1931)^
09 Sep ... 19.8 (1898) .... 9.2 (1860&1912) .. 22.8 (2023)^ .. 9.0 (1912)^
10 Sep ... 19.2 (1865) .... 8.6 (1860) ... ... 21.6 (2023)^ .. 8.6 (1860)

11 Sep ... 20.3 (1999) .... 8.1 (1860) ... ... 20.2 (1999) ... 8.2 (1860)
12 Sep ... 20.4 (1945) .... 8.1 (1848) ... ... 20.3 (1945) ... 8.1 (1848)
13 Sep ... 20.7 (2016) .... 6.7 (1807) ... ... 20.7 (2016) ... 6.7 (1807)
14 Sep ... 21.3 (2016) .... 6.7 (1807) ... ... 21.3 (2016) ... 6.7 (1807)
15 Sep ... 20.1 (2020) .... 7.9 (1986) ... ... 20.1 (2020) ... 7.8 (1986)

16 Sep ... 19.6 (1961) .... 8.1 (1807) ... ... 19.6 (1961) ... 8.1 (1807&1903)^
17 Sep ... 20.4 (1898) .... 8.1 (1807) ... ... 20.1 (1898) ... 8.1 (1807)
18 Sep ... 19.7 (1926) .... 6.9 (1807) ... ... 19.8 (1926) ... 6.9 (1807)
19 Sep ... 20.9 (1926) .... 7.4 (1952) ... ... 20.9 (1926) ... 7.3 (1952)
20 Sep ... 18.4 (1947) .... 6.8 (1919) ... ... 18.4 (1947) ... 6.9 (1919)

21 Sep ... 21.4 (2006) .... 6.5 (1872) ... ... 21.4 (2006) ... 6.7 (1836&1872)^
22 Sep ... 18.7 (1956) .... 6.3 (1872) ... ... 18.7 (1956) ... 6.6 (1872)
23 Sep ... 18.3 (1956) .... 6.0 (1773) ... ... 18.3 (1956) ... 6.0 (1773)
24 Sep ... 18.3 (2006) .... 6.7 (1872) ... ... 18.5 (1895)^ .. 6.9 (1872)
25 Sep ... 19.4 (1895) .... 7.4 (1812) ... ... 19.2 (1895) ... 7.4 (1812)

26 Sep ... 18.4 (1895) .... 6.0 (1885) ... ... 18.4 (1895) ... 6.0 (1885)
27 Sep ... 19.0 (1895) .... 6.1 (1824&1885) .. 19.7 (1895) .. 6.0 (1885)^
28 Sep ... 18.9 (2011) .... 4.9 (1824) ... ... 18.9 (2011) ... 4.9 (1824)
29 Sep ... 19.7 (2011) .... 5.5 (1918) ... ... 19.7 (2011) ... 5.6 (1918)
30 Sep ... 20.0 (2011) .... 6.3 (1808) ... ... 20.0 (2011) ... 6.3 (1808)


01 Oct ... 20.2 (1985) .... 6.1 (1808&1888) .. 20.1 (1985)^ .. 6.1 (1808&1888)
02 Oct ... 17.9 (2011) .... 3.6 (1817) ... ... 17.9 (1959&2011)^ .. 3.6 (1817&1888)^
03 Oct ... 19.8 (2011) .... 4.7 (1817) ... ... 19.8 (2011) ... 4.7 (1817)
04 Oct ... 17.7 (1959) .... 5.1 (1912) ... ... 17.8 (1886)^.. 5.0 (1880)^
05 Oct ... 17.9 (1886) .... 4.6 (1888) ... ... 18.1 (1921)^.. 4.6 (1888)

06 Oct ... 19.0 (1921) .... 4.1 (1888) ... ... 18.9 (1921) ... 4.1 (1888)
07 Oct ... 16.9 (1921) .... 3.5 (1829) ... ... 17.5 (2023)^.. 3.5 (1829)
08 Oct ... 17.7 (1995) .... 4.1 (1829) ... ... 17.5 (1995) ... 4.1 (1829)
09 Oct ... 17.5 (1995) .... 3.3 (1852) ... ... 17.3 (1995) ... 3.3 (1852)
10 Oct ... 17.8 (1921) .... 3.5 (1814) ... ... 17.8 (1921) ... 3.5 (1814)

11 Oct ... 17.6 (1978) .... 3.9 (1860) ... ... 17.7 (2005)^.. 4.0 (1860)
12 Oct ... 16.5 (1978) .... 3.2 (1887) ... ... 16.3 (1978) ... 3.0 (1887)
13 Oct ... 18.5 (2018.).... 2.2 (1838) ... ... 18.4 (2018.) .. 2.2 (1838)
14 Oct ... 17.2 (2017) .... 3.1 (1838) ... ... 17.1 (2017) ... 3.1 (1838)
15 Oct ... 15.7 (1930) .... 2.5 (1843) ... ... 15.8 (1930) ... 2.5 (1843)

16 Oct ... 16.4 (2017) .... 1.8 (1843) ... ... 16.3 (2017) ... 1.8 (1843)
17 Oct ... 15.6 (1897) .... 2.5 (1824) ... ... 15.5 (1897) ... 2.5 (1824)
18 Oct ... 16.7 (2014) .... 2.4 (1843) ... ... 16.5 (2014) ... 2.4 (1843)

19 Oct ... 16.3 (1921) .... 1.5 (1813) ... ... 16.0 (1921) ... 1.5 (1813)
20 Oct ... 14.9 (1795) .... 2.1 (1842) ... ... 14.9 (1795) ... 2.1 (1842)

21 Oct ... 15.2 (1977) .... 1.2 (1842) ... ... 15.1 (1826)^.. 1.2 (1842)
22 Oct ... 16.2 (1906) .... 2.5 (1931) ... ... 16.1 (1906) ... 2.5 (1931)
23 Oct ... 14.4 (1998) .... 0.9 (1859) ... ... 14.8 (2022)*... 1.0 (1859)
24 Oct ... 14.3 (2009) .... 0.6 (1859) ... ... 14.2 (2009) ... 0.7 (1859)
25 Oct ..14.0 (1978&2013) . 2.0 (1784) .. 13.9 (2013)^.. 2.0 (1784)

26 Oct ... 14.7 (1927) .... 1.5 (1785) ... ... 15.0 (2022)*... 1.2 (1895)^
27 Oct ... 16.7 (1888) .... 1.4 (1869) ... ... 16.6 (1888) ... 1.6 (1778&1869)^
28 Oct ... 15.6 (1888) .... 0.9 (1895) ... ..15.4 (1888,2022) ... 1.2 (1895)
29 Oct ... 14.0 (1772&1984) .. 0.3 (1895) ... 14.9 (2022)*... 0.3 (1895)
30 Oct ... 15.5 (2005) .... 0.7 (1836) ... ... 15.5 (2005) ... 0.7 (1836)

31 Oct ... 16.9 (2014) .... 0.7 (1836) ... ... 16.7 (2014) ... 0.7 (1836)

_______________________________

^ Notes: 

 1 Sep _ 1780 loses tie as 1906 incr 21.8 to 22.0 (1780 remains 21.8).

 2 Sep _ 1906 (22.3) no longer warmest Sep mean daily, replaced by 5 Sep 1949 (22.4)

 3 Sep _ 1908 (8.3) loses tie with 1816, incr 8.2 to 8.3. (1816 remains 8.2).

 4 Sep _ 2005 gains record (incr 20.4 to 20.6) while 1880 loses record (decr 20.7 to 20.1).

 5 Sep _ 1949 gains monthly maximum (see note 2 Sep) (lost to 2023 on 7 Sep 2023)

 6 Sep _ 2023 gains record from 1898 (20.9 in v2.0).

 7 Sep _ 2023 gains record from 1868 (20.9 in v2.0). New monthly maximum daily mean.

 8 Sep _ 1898 regained record with incr 21.3 to 21.6, 2021 (which had replaced it in legacy CET) held at 21.4. These were broken in 2023 with a new daily high mean of 22.0.

 8 Sep _ 1931 takes sole possession of previous tie with 1807 with decr from 8.9 to 8.8 (1807 remains 8.9).

 9 Sep _ 1898 became tied with 1781 after decr from 19.8 to 19.5 (1781 unchanged at 19.5). Records were replaced in 2023, 22.8 C.

 9 Sep _ 1860 lost share of tie with 1912 as 1912 decr 9.2 to 9.0, 1860 remains 9.2. +

10 Sep _ 2011 gained share of tie with 1865, which decreased from 19.2 to 19.1 (2011 unchanged at 19.1). Also replaced by 21.6 in 2023.

16 Sep _ 1903 gains share of tie with 1807, as 1903 decreased from 8.3 to 8.1 (1807 unchanged at 8.1).

24 Sep _ 2006 loses record to 1895 which incr from 18.0 to 18.5 (2006 unchanged at 18.3).

27 Sep _ 1824 loses share of tied record as 1885 decr from 6.1 to 6.0 (1824 unchanged at 6.1). 

 1 Oct _ 1985 retains monthly maximum (now 20.1, was 20.2) as 2011 Oct 1 also drops 0.1 (20.1 to 20.0).

 2 Oct _ 1959 gains tie with 2011 incr 17.6 to 17.7 (2011 unchanged at 17.7).

 2 Oct _ 1888 gains tie with 1817 with decr 4.0 to 3.6 (1817 unchanged at 3.6).

 4 Oct _ 1886 gains a record with incr 17.6 to 17.8 (1959 unchanged at 17.7).

 4 Oct _ 1880 gains a record with decr 5.3 to 5.0, 1912 loses (remains 5.1). 

 5 Oct _ 1921 gains a record with incr 17.7 to 18.1 (1886 17.9 to 18.0 lost record).

  7 Oct _ 2023 (17.5) gains record from 1921 (16.8 v2.0). 

21 Oct _ 1977 loses record with decr 15.2 to 15.0, 1826 gains record (remains at 15.1).

23 Oct ... 2022 new v2.0 record of 14.8, 1998 had held the v2.0 CET record at 14.2.

25 Oct _ 1978 loses share of tied record, decr 14.0 to 13.8, while 2013 decr 14.0 to 13.9.

26 Oct _ 2022 new v2.0 record of 15.0, 1927 had held the v2.0 record of 14.9.

26 Oct _ 1895 gains record with decr from 1.9 to 1.2, 1785 remains 1.5 and loses record.

27 Oct _ 1778 gains tie with 1869 which incr from 1.4 to 1.6 (1778 remains 1.6).

28 Oct _ 2022 gains tie with 1888 in v2.0.

29 Oct _ 2005 gained another record with incr from 13.9 to 14.1, 1772 remains 14.0, 1984 decr 14.0 to 13.9.

29 Oct _ 2022 then broke the 2005 v2.0 record with 14.9. 

 

_____________________________

Other Notable non-record daily mean temps (other than those removed as noted)

 6 Sep 1952 _ 8.6 (no change)

 8 Sep 1909 _ 8.9 (from 9.0) _ would have tied 1807, 1931 if both unchanged (1931 now 8.8).

10 Sep 1836 _ 8.8 (no change)

15 Sep 1903 _ 8.1 (from 8.0 in CET legacy)

18 Sep 1952 _ 7.1 (from 7.0 in CET legacy)

20 Sep 1952 _ 7.6 (from 7.9 in CET legacy)

22 Sep 1948 _ 7.0 (from 6.9 in CET legacy)

23 Sep 1844 _ 6.6 (no change)

25 Sep 1860 _ 7.7 (from 7.6 in CET legacy)

26 Sep 1824 _ 6.4 (no change)

28 Sep 1778, 1809 _ both 5.7 (no change)

29 Sep 1908 _ 19.0 (was 19.2 in CET legacy)

30 Sep 1908 _ 19.5 (was 19.6 in CET legacy)

 1 Oct 1908 _ 18.1 (no change)

 7 Oct 1888 _ 4.7 (from 5.0 in CET legacy)

 8 Oct 1852 _ 4.6 (no change)

 9 Oct 1979 _ 17.1 (from 17.3 in CET legacy)

 9 Oct 1829 _ 3.8

11 Oct 1896 _ 4.3 (no change)

13 Oct 1990 _ 16.7 (from 16.8 in CET legacy)

14 Oct 1990 _ 15.9 (from 16.1 in CET legacy)

16 Oct 1993 _ 2.6 (was 2.7 in CET legacy), 1824 2.7 (no change)

17 Oct 1905 _ 2.8 (was 2.7 in CET legacy), 1778 2.9 (no change)

18 Oct 1954 _ 16.1 (from 16.0 in CET legacy)

19 Oct 1843 _ 1.7 (no change)

21 Oct 1859 _ 1.8 (was 1.7 in CET legacy)

22 Oct 1905 _ 2.6 (was 2.8 in CET legacy)

24 Oct 2017 _ 14.1 (from 14.2 in CET legacy)

24 Oct 1895 _ 1.4 (was 1.2 in CET legacy), 1926 _ 1.7 (was 1.6).

27 Oct 2005 _ 16.2 (was 15.9 in CET legacy)

28 Oct 2005 _ 15.2 (was 15.0 in CET legacy)

28 Oct 1836 _ 1.5 (no change)

29 Oct 1836 _ 0.7 (no change), 1873 1.2 (was 1.1), 2008 1.4 (was 1.6). 

30 Oct 1772 _ 14.3 (no change)

30 Oct 1813 _ 1.5 (no change)

31 Oct 1772 _ 14.5 (no change)

31 Oct 1881 _ 1.3 (was 1.5 in CET legacy)

 

 

Edited by Roger J Smith
new records set 6-10 Sep 2023 and 7 Oct 2023
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Nov-Dec daily records (Legacy) _____ Nov-Dec daily records (v2.0)

01 Nov ... 13.5 (1894&1982) .. 1.5 (1934) ... 13.7 (1894)^ .. 1.1 (1926)^
02 Nov ... 14.3 (1821) ... 0.5 (1880) ... ... 14.3 (1821) ... 0.4 (1880)
03 Nov ... 15.0 (1996) ... 1.9 (1820) ... ... 14.9 (1996) ... 1.8 (1980)^
04 Nov ... 14.2 (1946) ... 0.8 (1845&1848) .. 14.2 (1946) .. 0.8 (1845&1848)
05 Nov ... 15.4 (1938) ... 0.8 (1801) ... ... 15.5 (1938) ... 0.8 (1801&1901)^

06 Nov ... 14.3 (2015) .... 0.6 (1868) ... ... 14.2 (2015) ... 0.7 (1868)
07 Nov ... 13.8 (2015) ... -0.6 (1791) ... ... 13.7 (2015) ...-0.6 (1791)
08 Nov ... 13.4 (1852) ... -1.2 (1812) ... ... 13.4 (1852) ...-1.2 (1812)
09 Nov ... 12.5 (1998.)... -0.5 (1921) ... ... 12.3 (1998.) .. +0.2 (1921)
10 Nov ... 13.4 (1977) .... 0.1 (1812) ... ... 13.2 (1977,2015)^.. 0.1 (1812)

11 Nov ... 13.9 (2015) .... 0.3 (1828) ... ... 14.3 (2022)*... 0.3 (1828)
12 Nov ... 13.8 (1938&1947) ... -1.4 (1919) .. 13.8 (1938&1947) ... -1.5 (1919)
13 Nov ... 14.6 (1938) .. -1.1 (1862) ... ... 14.7 (1938) .. -0.9 (1862)
14 Nov ... 13.4 (1938) .. -1.1 (1925) ... ... 13.4 (1938) .. -1.0 (1925)
15 Nov ... 13.5 (1821) .. -2.1 (1965) ... ... 13.5 (1821) .. -2.1 (1965)

16 Nov ... 13.4 (1997) .. -2.9 (1901) ... ... 13.3 (1997) .. -2.3 (1901)
17 Nov ... 13.1 (1997) .. -2.0 (1841) ... ... 12.9 (1997) .. -2.0 (1841)
18 Nov ... 12.8 (2020) .. -1.6 (1887) ... ... 12.7 (2020) .. -1.3 (1798&1871)^
19 Nov ... 12.7 (1994) .. -2.1 (1815) ... ... 12.5 (1994&2003)^ .. -2.1 (1815)
20 Nov ... 12.8 (2009) .. -1.2 (1829) ... ... 12.7 (2009) .. -1.2 (1829)

21 Nov ... 13.7 (1947) .. -1.4 (1880) ... ... 13.7 (1947) .. -1.5 (1880)
22 Nov ... 14.4 (1947) .. -2.3 (1773) ... ... 14.4 (1947) .. -2.3 (1773)
23 Nov ... 13.3 (1947) .. -4.2 (1858) ... ... 13.3 (1947) .. -3.9 (1858)
24 Nov ... 12.7 (1980) .. -4.6 (1904) ... ... 12.5 (1980) .. -3.6 (1816)^
25 Nov ... 12.1 (1964) .. -1.5 (1923) ... ... 12.1 (1964) .. -1.9 (1923)

26 Nov ... 12.1 (1983) .. -1.7 (1904) ... ... 11.9 (1983) .. -1.7 (1904)
27 Nov ... 11.3 (1818) .. -2.6 (1915) ... ... 11.3 (1818) .. -2.7 (1890)^
28 Nov ... 12.0 (1828) .. -4.0 (2010) ... ... 12.0 (1828) .. -4.0 (2010)^
29 Nov ... 12.2 (1818) .. -2.6 (1801) ... ... 12.2 (1818) .. -2.6 (1801)
30 Nov ... 12.4 (2001) .. -1.7 (1973) ... ... 12.3 (2001) .. -1.6 (1796&1973)^


01 Dec ... 12.1 (1775) .. -3.0 (1947) ... ... 12.1 (1775) .. -3.0 (1947)
02 Dec ... 12.2 (1985) .. -4.7 (1796) ... ... 12.0 (1985) .. -4.7 (1796)
03 Dec ... 12.2 (1985) .. -4.0 (1879) ... ... 12.1 (1985)^.. -4.2 (1879)
04 Dec ... 12.1 (1888) .. -3.8 (1879&1925) .. 12.0 (1888) .. -3.6 (1879&1925)
05 Dec ... 12.6 (1898) .. -3.7 (1844) ... ... 12.7 (1898) .. -3.7 (1844)

06 Dec ... 12.3 (1898) .. -5.5 (1844) ... ... 12.1 (1898) .. -5.5 (1844)
07 Dec ... 12.3 (1856) .. -5.7 (1879) ... ... 12.1 (1856) .. -5.3 (1879)
08 Dec ... 12.1 (1856) .. -5.4 (1807) ... ... 12.0 (1856) .. -5.4 (1807)
09 Dec ... 11.8 (1934) .. -4.0 (1803) ... ... 11.7 (1934) .. -4.0 (1803)
10 Dec ... 10.9 (1997) .. -4.5 (1784) ... ... 10.7 (1856&1997)^ .. -4.5 (1784)

11 Dec ... 12.6 (1994) .. -6.7 (1784) ... ... 12.4 (1994) .. -6.7 (1784)
12 Dec ... 12.9 (1994) .. -8.5 (1981) ... ... 12.7 (1994) .. -8.7 (1981)
13 Dec ... 11.6 (1918) .. -6.5 (1981) ... ... 11.5 (1918) .. -6.7 (1981)
14 Dec ... 11.8 (1912) .. -5.3 (1878) ... ... 11.5 (2006)^.. -5.5 (1878)

15 Dec ... 11.2 (1985) .. -5.4 (1788) ... ... 11.1 (1985) .. -5.4 (1788)

16 Dec ... 11.4 (2015) .. -6.6 (1859) ... ... 11.4 (2015) .. -6.4 (1859)
17 Dec ... 12.5 (2015) .. -7.7 (1859) ... ... 12.5 (2015) .. -7.5 (1859)
18 Dec ... 12.5 (2015) .. -7.1 (1859) ... ... 12.5 (2015) .. -7.0 (1859)
19 Dec ... 13.1 (2015) .. -6.8 (2010) ... ... 13.0 (2015) .. -6.8 (2010)
20 Dec ... 11.1 (1828) .. -7.0 (2010) ... ... 11.1 (1828) .. -7.0 (2010)

21 Dec ... 11.4 (1971) .. -5.9 (2010) ... ... 11.4 (1971) .. -5.9 (2010)
22 Dec ... 11.6 (1991) .. -6.8 (1890) ... ... 11.5 (1991) .. -5.7 (1890)
23 Dec ... 11.8 (1991) .. -6.4 (1870) ... ... 11.6 (1991) .. -6.2 (1870)
24 Dec ... 10.7 (1843) .. -6.9 (1870) ... ... 11.3 (2023)*.. -6.7 (1830&1870)^

25 Dec ... 10.4 (1824&1983) .. -10.8 (1796) ...10.7 (2023)^..-10.8 (1796)

26 Dec ... 11.0 (2011) .. -5.4 (1798) ... ... 11.0 (2011) .. -5.4 (1786,1798)
27 Dec ... 10.9 (2015) .. -8.4 (1798) ... ... 10.8 (2015) .. -8.4 (1798)
28 Dec ... 11.5 (1987) .. -8.2 (1798) ... ... 11.3 (1987) .. -8.2 (1798)
29 Dec ... 12.0 (1987) .. -4.9 (1874) ... ... 11.9 (1987) .. -5.3 (1908)^
30 Dec ... 11.4 (2021) .. -6.1 (1870) ... ... 11.3 (2021) .. -6.0 (1870)

31 Dec ... 12.9 (2021) .. -7.1 (1783) ... ... 12.9 (2021) .. -7.1 (1783)

____________________________________

^ Notes:

 1 Nov _ 1982 loses tie as 1894 incr 0.2 to 13.7, 1982 decr 13.5 to 13.2.

 1 Nov _ 1926 gains record with decr 1.6 to 1.1, 1934 remains 1.5, loses record.

 3 Nov _ 1980 gains record with decr 0.3 to 1.8, 1820 remains 1.9, loses record.

 5 Nov _ 1901 gains tie with decr 0.9 to 0.8, 1801 remains 0.8, tied.

10 Nov _ 2015 gains tie with decr 0.1 13.3 to 13.2, 1977 decr 0.2 13.4 to 13.2, tied.

11 Nov _ 2022 (14.2) replaces 2015 (13.8) in v2.0. It would have replaced 2015 (13.9) in CET legacy.

18 Nov _ 1887 loses record with incr -1.6 to -1.0, 1798 and 1871 (from -1.4) tied at -1.3 new record holders.

19 Nov _ 2003 gains tie with decr 12.6 to 12.5, 1994 decr 12.7 to 12.5 tied.

24 Nov _ 1904 loses record with incr of 1.1, -3.5 from -4.6, (1816 remains -3.6), also loses monthly minimum to 2010

27 Nov _ 1890 gains record with decr -2.5 to -2.7, 1915 loses record with incr -2.6 to -2.0

28 Nov _ 2010 gains monthly record, 23 Nov 1858 and 24 Nov 1904 both incr from lower values, 2010 remains -4.0

30 Nov _ 1796 gains tie (remains -1.6), 1973 incr -1.7 to -1.6, tied. 

3 Dec _ 1985 v2.0 12.0, revised to 12.1 in v2.0.1.0.

10 Dec _ 1856 gains tie, decr 10.8 to 10.7, 1997 decr 10.9 to 10.7, tied.

14 Dec _ 2006 gains record, remains 11.5, 1912 decr 11.8 to 11.2. (1929 11.7 to 11.0)

24 Dec _ 2023 (11.3) replaces 1843 (10.7) in v2.0. 

24 Dec _ 1830 gains tied share as 1870 up 0.2 -6.9 to -6.7, 1830 remains -6.7.

25 Dec _ 1983 lost tied share, decr 10.4 to 10.2, 1824 remained 10.4. 2023 broke it at 10.7 C. 

29 Dec _ 1908 gains record, decr -4.8 to -5.3, 1874 loses record, incr -4.9 to -4.8.

 

_ - - - - - - - - _

other notables __ Warm _______________________ Cold

Date __ Year ___ CET 2.0 __ CET legacy ____ Date __ Year ___ CET 2.0 __ CET legacy 

2 Nov __ 1811 ___ 14.2 ____ same _______ 4 Nov __ 1901 ___ 1.5 _____ 1.0

_________________________________________ 6 Nov __ 1782 ___ 0.9 _____ same

 9 Nov _ 2020 ___ 12.1 ____ same ________ 7 Nov __ 1782 ___ 0.5 _____ same _ 1836 0.9 same

10 Nov _ 2020 ___ 12.3 ____ same ________8 Nov __ 1816 ___-0.8 _____ same _ 1837 -0.7 same

_________________________________________12 Nov __ 1828 ___-0.7 _____ same

_________________________________________13 Nov __ 1825 ___-0.8 _____ same _ 1925 -0.7 (was -0.9)

_________________________________________16 Nov __ 1780 ___-1.9 _____ same

_________________________________________ 17 Nov __ 1930 ___-1.4 _____-1.7 _ 1861 _ -1.3 (was -1.5)

22 Nov _ 1906 ___ 13.0 ____ 13.1 ________ 22 Nov __ 1880 ___-1.5 _____-1.3

23 Nov _ 1980 ___ 12.5 ____ 12.8 ________ 23 Nov __ 1993 ___-3.0 _____-2.9

_________________________________________ 27 Nov __ 1904 ___-2.4 _____-2.3

_________________________________________ 28 Nov __ 1890 ___-2.5 _____ -2.2 _ (1787, 1807 -2.2 same)

29 Nov _ 2000 ___ 11.9 ____ 12.1 ________ 29 Nov __ 2010 ___-2.5 _____ same

30 Nov _ 1939 ___ 12.0 ____ 11.9 _________ 

 1 Dec __ 1939 ___ 11.9 ____ 12.0 _________ 2 Dec ___ 1879 ___-4.2 _____ same

 3 Dec __ 1953 ___ 11.8 ____ same 

 5 Dec __ 1888 ___ 11.6 ____ 11.1 __________ 5 Dec ___ 1879 ___-3.6 _____ -3.2

____________________________________________6 Dec ___ 2010 ___-3.8 _____ same _ 1879 -3.7 (was -3.6)

____________________________________________7 Dec ___ 2010 ___-3.5 _____ same

 8 Dec __ 2015 ___ 11.3 _____ 11.4 __________8 Dec ___ 1812 ___-4.4 _____ same

 9 Dec __ 1856 ___ 11.5 _____ 11.7 __________9 Dec ___ 1812 ___-3.9 _____ same

___________________________________________10 Dec ___ 1981 ___-4.2 _____ -4.0

12 Dec __ 2000 ___ 11.8 ____ 12.1 _________11 Dec ___ 1819 ___-6.0 _____ same

___________________________________________13 Dec ___ 1878 ___-4.5 _____ -4.2 _ 1920 -4.4 (was -5.1)

14 Dec __ 1929 ___ 11.0 ____ 11.7 _________ 14 Dec ___ 1899 ___-5.2 _____ -4.8

18 Dec __ 2014 ___ 11.8 ____ same ________ 16 Dec ___ 1788 ___-5.7 _____ same

19 Dec __ 1993 ___ 11.4 ____ 11.6 _________ 19 Dec ___ 1859 ___-5.6 _____ -5.7

21 Dec __ 1828 ___ 11.2 ____ same ________

22 Dec __ 1828 ___ 11.2 ____ same ________ 22 Dec ___ 1870 ___-5.2 _____ -5.3 __ 1892 -4.8 (same)

23 Dec __ 1843 ___ 11.4 ____ same ________ 23 Dec ___ 1891 ___-5.7 _____ -4.4

___________________________________________ 25 Dec ___ 1830 ___-6.6 (same), 2010 -5.9 (same)

26 Dec __ 1988 ___ 10.7 ____ 10.9 _________ 25 Dec ___ 1878 ___-6.3 _____ -5.8

30 Dec __ 1834 ___ 11.0 ____ same ________ 30 Dec ___ 1788 ___-5.9 _____ same

31 Dec __ 1859 ___ 11.0 ____ 11.1 

(note the lowest value added to data base for Dec 1786 was -5.4 on 26th)

 

Edited by Roger J Smith
Dec 24 new record high, 11.3 C
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  • Location: Rossland BC Canada
  • Location: Rossland BC Canada

Frequency of record highs and lows in each year

* in this table means two or three shared records (where two years tie), you can tell which by whether or not the asterisk follows a zero (then there are two) or a five (then there are three, the only example being 1976). Years with one shared record high or low will have totals that end in five and have no asterisk. ... there is one case with a three-way shared record low, and those three years have 0.3 as part of their total number of record lows. There are no years with four shared record highs or lows (if there are in the future then ** will denote this fact). As examples, 1796 has two shared record highs, and the total is shown as 1.0*. 1773 has one shared record high (0.5). 1807 has eight record lows plus a ninth shared one (8.5, no asterisk). 1976 shows 9.5* record highs which means 8 exclusive to that year and three more shared. This is the only case with three shared records (of the same extreme).

 

Table 1: Frequency of record highs and lows in CET legacy series (terminated 30 Apr 2022)

 

YEAR ___ Highs _ Lows ___ YEAR ___ Highs _ Lows ___ YEAR ___ Highs _ Lows ___ YEAR ___ Highs _ Lows

 

1772 ____ 0.5 ___ 1.0 _____ 1834 ____ 5.0 ___ 0.0 _____ 1896 ____ 0.5 ___ 0.0 _____ 1958 ____ 1.0 ___ 0.0

1773 ____ 0.5 ___ 5.0 _____ 1835 ____ 1.0 ___ 2.0 _____ 1897 ____ 1.0 ___ 0.0 _____ 1959 ____ 4.0 ___ 0.0

1774 ____ 0.0 ___ 0.0 _____ 1836 ____ 0.0 ___ 3.0 _____ 1898 ____ 6.5 ___ 1.0 _____ 1960 ____ 1.0 ___ 0.0

1775 ____ 4.0 ___ 0.0 _____ 1837 ____ 0.0 ___ 3.5 _____ 1899 ____ 1.0 ___ 1.5 _____ 1961 ____ 1.0 ___ 1.0

1776 ____ 1.0 ___ 5.0 _____ 1838 ____ 0.0 ___ 4.0 _____ 1900 ____ 0.0 ___ 0.0 _____ 1962 ____ 0.0 ___ 0.5

1777 ____ 5.0 ___ 2.0 _____ 1839 ____ 0.0 ___ 6.0 _____ 1901 ____ 0.0 ___ 2.5 _____ 1963 ____ 0.0 ___ 2.0

1778 ____ 0.0 ___ 1.0 _____ 1840 ____ 0.0 ___ 2.0 _____ 1902 ____ 0.0 ___ 3.0 _____ 1964 ____ 1.0 ___ 0.5

1779 ____ 1.0 ___ 0.0 _____ 1841 ____ 0.0 ___ 9.5 _____ 1903 ____ 2.0 ___ 2.0 _____ 1965 ____ 0.0 ___ 4.0

1780 ____ 1.5 ___ 1.0 _____ 1842 ____ 0.0 ___ 2.0 _____ 1904 ____ 0.0 ___ 3.0 _____ 1966 ____ 1.0 ___ 2.0

1781 ____ 1.0 ___ 0.0 _____ 1843 ____ 1.0 ___ 5.3 _____ 1905 ____ 0.0 ___ 0.0 _____ 1967 ____ 0.0 ___ 0.0

1782 ____ 1.0 ___ 0.0 _____ 1844 ____ 0.0 ___ 2.0 _____ 1906 ____ 3.5 ___ 0.0 _____ 1968 ____ 0.0 ___ 0.0

1783 ____ 1.0 ___ 2.0 _____ 1845 ____ 0.0 ___ 6.5 _____ 1907 ____ 0.0 ___ 2.0 _____ 1969 ____ 0.0 ___ 0.0

1784 ____ 0.5 ___ 4.0 _____ 1846 ____ 3.0 ___ 0.0 _____ 1908 ____ 1.0 ___ 3.5 _____ 1970 ____ 3.0 ___ 0.0

1785 ____ 0.0 ___ 6.0 _____ 1847 ____ 1.0 ___ 1.0 _____ 1909 ____ 0.0 ___ 2.5 _____ 1971 ____ 1.0 ___ 0.0

1786 ____ 0.0 ___ 4.5 _____ 1848 ____ 0.0 ___ 1.5 _____ 1910 ____ 0.0 ___ 0.0 _____ 1972 ____ 0.0 ___ 0.0

1787 ____ 0.0 ___ 0.3 _____ 1849 ____ 0.0 ___ 1.0 _____ 1911 ____ 2.0 ___ 2.0 _____ 1973 ____ 0.0 ___ 1.0

1788 ____ 1.0 ___ 1.0 _____ 1850 ____ 0.0 ___ 2.0 _____ 1912 ____ 1.0 ___ 5.5 _____ 1974 ____ 0.0 ___ 0.0

1789 ____ 0.0 ___ 1.0 _____ 1851 ____ 0.0 ___ 0.0 _____ 1913 ____ 0.0 ___ 0.0 _____ 1975 ____ 3.0 ___ 0.0

1790 ____ 0.0 ___ 0.0 _____ 1852 ____ 2.5 ___ 1.0 _____ 1914 ____ 0.0 ___ 0.5 _____ 1976 ____ 9.5*___ 0.0

1791 ____ 0.0 ___ 1.0 _____ 1853 ____ 1.0 ___ 2.0 _____ 1915 ____ 0.0 ___ 2.0 _____ 1977 ____ 2.0 ___ 0.0

1792 ____ 1.0 ___ 0.0 _____ 1854 ____ 1.0 ___ 0.0 _____ 1916 ____ 2.0 ___ 0.0 _____ 1978 ____ 2.5 ___ 1.0

1793 ____ 0.0 ___ 0.5 _____ 1855 ____ 0.0 ___ 5.0 _____ 1917 ____ 1.0 ___ 3.5 _____ 1979 ____ 0.0 ___ 2.0

1794 ____ 1.0 ___ 0.0 _____ 1856 ____ 2.0 ___ 2.0 _____ 1918 ____ 2.0 ___ 1.0 _____ 1980 ____ 1.0 ___ 0.0

1795 ____ 1.0 ___ 3.5 _____ 1857 ____ 1.0 ___ 0.0 _____ 1919 ____ 0.0 ___ 4.0 _____ 1981 ____ 0.0 ___ 3.0

1796 ____ 1.0*___2.0 _____ 1858 ____ 2.5 ___ 1.0 _____ 1920 ____ 0.0 ___ 3.0 _____ 1982 ____ 2.5 ___ 1.0

1797 ____ 0.0 ___ 0.0 _____ 1859 ____ 2.0 ___ 5.0 _____ 1921 ____ 7.0 ___ 1.0 _____ 1983 ____ 1.5 ___ 0.0

1798 ____ 0.0 ___ 3.0 _____ 1860 ____ 0.0 ___ 4.0* _____1922 ____ 2.0 ___ 0.0 _____ 1984 ____ 1.5 ___ 1.0

1799 ____ 0.0 ___ 3.0 _____ 1861 ____ 0.0 ___ 1.0 _____ 1923 ____ 3.5 ___ 1.0 _____ 1985 ____ 4.0 ___ 0.0

1800 ____ 1.0 ___ 0.0 _____ 1862 ____ 0.0 ___ 2.0 _____ 1924 ____ 0.0 ___ 0.0 _____ 1986 ____ 0.0 ___ 2.0

1801 ____ 0.0 ___ 2.0 _____ 1863 ____ 0.0 ___ 1.0 _____ 1925 ____ 0.0 ___ 1.5 _____ 1987 ____ 2.0 ___ 2.0

1802 ____ 0.0 ___ 1.5 _____ 1864 ____ 0.0 ___ 2.3 _____ 1926 ____ 2.5 ___ 0.0 _____ 1988 ____ 0.0 ___ 0.0

1803 ____ 0.0 ___ 1.0 _____ 1865 ____ 2.0 ___ 0.0 _____ 1927 ____ 1.5 ___ 0.0 _____ 1989 ____ 1.5 ___ 0.0

1804 ____ 1.5 ___ 0.0 _____ 1866 ____ 2.0 ___ 1.0 _____ 1928 ____ 1.0 ___ 1.0 _____ 1990 ____ 6.5 ___ 0.0

1805 ____ 1.0 ___ 0.0 _____ 1867 ____ 1.0 ___ 6.0 _____ 1929 ____ 0.0 ___ 4.0 _____ 1991 ____ 3.0 ___ 2.5

1806 ____ 0.0 ___ 0.0 _____ 1868 ____ 5.0 ___ 1.0 _____ 1930 ____ 4.0 ___ 0.0 _____ 1992 ____ 1.0 ___ 0.0

1807 ____ 0.0 ___ 8.5 _____ 1869 ____ 4.0 ___ 4.0 _____ 1931 ____ 0.5 ___ 2.5 _____ 1993 ____ 0.0 ___ 1.0

1808 ____ 3.0 ___ 1.5 _____ 1870 ____ 0.5 ___ 3.0 _____ 1932 ____ 2.0 ___ 0.0 _____ 1994 ____ 3.0 ___ 0.0

1809 ____ 0.0 ___ 0.5 _____ 1871 ____ 0.0 ___ 0.5 _____ 1933 ____ 0.0 ___ 0.0 _____ 1995 ____ 6.0 ___ 0.0

1810 ____ 0.0 ___ 1.0 _____ 1872 ____ 0.0 ___ 5.0 _____ 1934 ____ 2.0 ___ 1.0 _____ 1996 ____ 1.0 ___ 1.0

1811 ____ 0.0 ___ 0.0 _____ 1873 ____ 0.5 ___ 0.0 _____ 1935 ____ 2.0 ___ 1.0 _____ 1997 ____ 3.5 ___ 0.0

1812 ____ 0.0 ___ 8.5 _____ 1874 ____ 1.0 ___ 1.0 _____ 1936 ____ 0.0 ___ 1.0 _____ 1998 ____ 6.5 ___ 0.0

1813 ____ 1.0 ___ 1.0 _____ 1875 ____ 1.0 ___ 0.0 _____ 1937 ____ 0.0 ___ 0.0 _____ 1999 ____ 1.0 ___ 0.0

1814 ____ 1.0 ___ 5.0 _____ 1876 ____ 1.0 ___ 0.0 _____ 1938 ____ 2.5 ___ 0.0 _____ 2000 ____ 2.0 ___ 0.0

1815 ____ 0.0 ___ 1.0 _____ 1877 ____ 0.0 ___ 5.0 _____ 1939 ____ 2.0 ___ 0.0 _____ 2001 ____ 1.0 ___ 0.0

1816 ____ 0.0 ___ 7.5 _____ 1878 ____ 3.0 ___ 1.0 _____ 1940 ____ 1.0 ___ 0.0 _____ 2002 ____ 0.0 ___ 0.0

1817 ____ 1.0 ___ 3.0 _____ 1879 ____ 0.0 ___ 7.0*_____1941 ____ 1.0 ___ 0.0 _____ 2003 ____ 4.0 ___ 0.0

1818 ____ 4.5 ___ 0.0 _____ 1880 ____ 2.0 ___ 2.0 _____ 1942 ____ 1.0 ___ 0.0 _____ 2004 ____ 4.0 ___ 0.0

1819 ____ 0.0 ___ 0.0 _____ 1881 ____ 0.0 ___ 5.5 _____ 1943 ____ 0.0 ___ 0.0 _____ 2005 ____ 4.5 ___ 0.0

1820 ____ 0.0 ___ 3.0 _____ 1882 ____ 1.0 ___ 0.0 _____ 1944 ____ 2.0 ___ 0.0 _____ 2006 ____ 6.0 ___ 0.0

1821 ____ 3.0 ___ 3.0 _____ 1883 ____ 0.0 ___ 2.0 _____ 1945 ____ 7.0*___ 1.0 _____2007 ____ 1.5 ___ 0.0

1822 ____ 1.5 ___ 1.0 _____ 1884 ____ 1.0 ___ 1.0 _____ 1946 ____ 2.5 ___ 0.0 _____ 2008 ____ 2.5 ___ 0.0

1823 ____ 0.0 ___ 6.5 _____ 1885 ____ 0.0 ___ 2.0*_____ 1947 ____ 9.0 ___ 5.0 _____ 2009 ____ 2.0 ___ 0.0

1824 ____ 0.5 ___ 2.5 _____ 1886 ____ 1.0 ___ 0.5 _____ 1948 ____ 6.0 ___ 0.0 _____ 2010 ____ 0.0 ___ 4.0

1825 ____ 2.0 ___ 0.0 _____ 1887 ____ 0.0 ___ 2.0 _____ 1949 ____ 1.0 ___ 0.0 _____ 2011 ____ 9.0 ___ 0.0

1826 ____ 1.0 ___ 1.0 _____ 1888 ____ 3.0 ___ 6.5 _____ 1950 ____ 1.0 ___ 0.0 _____ 2012 ____ 1.0 ___ 0.0

1827 ____ 0.0 ___ 0.0 _____ 1889 ____ 0.0 ___ 0.0 _____ 1951 ____ 0.0 ___ 0.0 _____ 2013 ____ 0.5 ___ 0.0

1828 ____ 4.0 ___ 1.0 _____ 1890 ____ 1.0 ___ 2.5 _____ 1952 ____ 1.0 ___ 2.0 _____ 2014 ____ 2.0 ___ 0.0

1829 ____ 0.0 ___ 4.0 _____ 1891 ____ 0.0 ___ 1.5 _____ 1953 ____ 3.0 ___ 0.0 _____ 2015 ____ 9.0 ___ 0.0

1830 ____ 0.0 ___ 2.5 _____ 1892 ____ 0.0 ___ 4.0 _____ 1954 ____ 0.0 ___ 0.0 _____ 2016 ____ 6.0 ___ 0.0

1831 ____ 1.0 ___ 1.0 _____ 1893 ____ 5.0 ___ 0.0 _____ 1955 ____ 2.0 ___ 0.0 _____ 2017 ____ 4.5 ___ 0.0

1832 ____ 0.0 ___ 0.0 _____ 1894 ____ 0.5 ___ 2.0 _____ 1956 ____ 2.0 ___ 2.5 _____ 2018 ____ 5.0 ___ 1.0

1833 ____ 2.0 ___ 1.0 _____ 1895 ____ 3.0 ___ 5.5 _____ 1957 ____ 4.0 ___ 0.0 _____ 2019 ____ 5.0 ___ 0.0

_________________________________________________________________________________ 2020 ____ 8.0 ___ 0.0

_________________________________________________________________________________ 2021 ____ 4.0 ___ 0.0

_________________________________________________________________________________ 2022 ____ 2.0 ___ 0.0

 

NOTE: 2023 would likely be 11.0 as of 25 Dec, replacing 1878 in Feb and 2006, tied 1818/1989, in June, two 1898 in Sep 2023, also one apiece for 1865, 1868 and 2021, also one 1921 (7 Oct) and one 1843 (24 Dec), tie 1824, 1983 (25 Dec). 2024 now takes three records (1805, 1945, 1958).

However, the table is "frozen" as of 30 Apr 2022 since CET legacy no longer updated.

2022 ends 30 April 2022, it is likely that it would end 9.0 __ 0.0, with 1.0 subtracted from the maxima for 1825, 2006 and also 1911., then 1998 (23 Oct), 1927 (26 Oct), not 1888 (legacy above the new tie 28 Oct) and 1772, 1984 would lose 0.5 each for 29 Oct, also 2015 would lose one for Nov 11th.

The legacy set had missing data for Dec 1786, this was provided in v2.0. As a result there is one change that would be made, 1786 gains one share (0.5) in 26 Dec and 1798 loses 0.5. Those changes do not appear in the table since it is based on CET legacy data.

The random chance of records falling in any given year would amount to about 1.5 of each type, so that years with one or two records of each kind are closest to normal distributions. 

The number of record highs since about 1975 is anomalously high. There have been exclusive records on 135 days plus shared records on 17 more. At random you would expect about 60 in this interval. The number of record lows since 1988 is very low, only nine new records and one shared record in that 30-year interval. 

(table edited for 21 Feb 2019 record high) _ 1813 lost one record high.

(table edited for 23, 25 July 2019 record highs) _ 1989 and 2006 lost one record high.

(table edited for 25 August 2019 record high) _ 1899 lost one record high. 

(table edited for 8, 10 Apr 2020 record highs) _ 1798 and 1928 lost one record high.

(table edited for 25 June, 2020) (record high) _ 1935 lost one record high. 

(table edited for 31 July, 2020) (record high) _ 1943 and 1995 each lost 0.5 record highs.

(table edited for 11,12 Aug 2020) (record highs) _ 1911 and 1997 each lost one record high.

(table edited for 15 Sept 2020) (record high) _ 1947 and 2016 each lost 0.5 record highs. 

(table edited for 18 Nov 2020) (record high) _ 1978 lost one record high.

(table edited for 31 Mar 2021) (record high) _ 1815 lost its only record high.

(table edited for 8 Sep 2021) (record high) _ 1898 lost a record high.

(table edited for 30 Dec 2021 to 1 Jan 2022) _ 1834, 1859 and 1851 lost record highs.

(table edited for 16 Feb 2022) _ 1928 lost a record high.

(Table not updated for 18, 19 July, 14 Aug 2022 or 23, 26, 28 or 29 Oct, 11 Nov 2022, or 17 Feb 2023. 12, 13 June 2023, 6 to 10 Sep, 7 Oct, 24, 25 Dec 2023, 15, 18 Feb 2024, 14 and 20 March see notes)

========================================================

Table 2: Frequency of record high and low daily means in CET v2.0

* in this table, see explanatory note for first table above, same logic here, if a year that had the asterisk before now ends in a count of .5 and has no asterisk, then that tie was resolved in favour of the year and against some other year. 1976 lost two of three ties (max) and no longer needs the only asterisk beside a count ending in .5 that existed in the legacy count. 

 

1772 ____ 0.0 ___ 1.0 _____ 1834 ____ 5.0 ___ 0.0 _____ 1896 ____ 0.5 ___ 0.5 _____ 1958 ____ 0.0 ___ 0.0

1773 ____ 0.0 ___ 5.0 _____ 1835 ____ 1.0 ___ 2.33_____1897 ____ 1.0 ___ 0.0 _____ 1959 ____ 3.5 ___ 0.0

1774 ____ 0.0 ___ 0.0 _____ 1836 ____ 0.0 ___ 3.5 _____ 1898 ____ 3.0 ___ 1.0 _____ 1960 ____ 1.0 ___ 0.0

1775 ____ 4.5 ___ 0.0 _____ 1837 ____ 0.0 ___ 3.5 _____ 1899 ____ 1.0 ___ 1.0 _____ 1961 ____ 1.0 ___ 1.0

1776 ____ 1.0 ___ 5.0 _____ 1838 ____ 0.0 ___ 4.0 _____ 1900 ____ 0.0 ___ 0.0 _____ 1962 ____ 0.0 ___ 0.5

1777 ____ 5.0 ___ 2.0 _____ 1839 ____ 0.0 ___ 6.0 _____ 1901 ____ 0.0 ___ 2.5 _____ 1963 ____ 0.0 ___ 2.0

1778 ____ 0.0 ___ 1.5 _____ 1840 ____ 0.0 ___ 2.0 _____ 1902 ____ 0.0 ___ 3.0 _____ 1964 ____ 1.0 ___ 0.5

1779 ____ 0.5 ___ 0.0 _____ 1841 ____ 0.0 ___ 9.5 _____ 1903 ____ 1.5 ___ 2.5 _____ 1965 ____ 0.0 ___ 4.0

1780 ____ 1.0 ___ 1.0 _____ 1842 ____ 0.0 ___ 2.0 _____ 1904 ____ 0.0 ___ 2.0 _____ 1966 ____ 1.5 ___ 2.0

1781 ____ 0.5 ___ 0.0 _____ 1843 ____ 0.0 ___ 5.3 _____ 1905 ____ 0.0 ___ 0.0 _____ 1967 ____ 0.0 ___ 0.0

1782 ____ 1.0 ___ 0.0 _____ 1844 ____ 0.0 ___ 2.0 _____ 1906 ____ 3.0 ___ 0.0 _____ 1968 ____ 0.0 ___ 0.0

1783 ____ 1.0 ___ 2.0 _____ 1845 ____ 0.0 ___ 8.0 _____ 1907 ____ 0.0 ___ 1.5 _____ 1969 ____ 1.0 ___ 0.0

1784 ____ 0.5 ___ 4.0 _____ 1846 ____ 2.0 ___ 0.0 _____ 1908 ____ 1.0 ___ 4.0 _____ 1970 ____ 3.0 ___ 0.0

1785 ____ 0.0 ___ 5.5 _____ 1847 ____ 1.0 ___ 1.0 _____ 1909 ____ 0.0 ___ 1.0 _____ 1971 ____ 1.0 ___ 0.0

1786 ____ 0.0 ___ 5.0*_____ 1848 ____ 0.0 ___ 1.5 _____1910 ____ 0.0 ___ 1.0 _____ 1972 ____ 0.0 ___ 0.0

1787 ____ 0.0 ___ 0.3 _____ 1849 ____ 0.0 ___ 1.0 _____ 1911 ____ 1.0 ___ 2.0 _____ 1973 ____ 0.0 ___ 0.5

1788 ____ 1.0 ___ 1.0 _____ 1850 ____ 0.0 ___ 2.0 _____ 1912 ____ 0.0 ___ 7.0 _____ 1974 ____ 0.0 ___ 0.0

1789 ____ 0.0 ___ 1.0 _____ 1851 ____ 0.0 ___ 0.0 _____ 1913 ____ 0.0 ___ 0.0 _____ 1975 ____ 3.0 ___ 0.0

1790 ____ 0.0 ___ 0.0 _____ 1852 ____ 2.0 ___ 1.0 _____ 1914 ____ 0.0 ___ 0.0 _____ 1976 ____ 8.5 ___ 0.0

1791 ____ 0.0 ___ 1.0 _____ 1853 ____ 1.0 ___ 2.0 _____ 1915 ____ 0.0 ___ 0.0 _____ 1977 ____ 0.5 ___ 0.0

1792 ____ 1.0 ___ 0.0 _____ 1854 ____ 0.5 ___ 0.0 _____ 1916 ____ 1.0 ___ 0.0 _____ 1978 ____ 1.0 ___ 1.0

1793 ____ 0.0 ___ 0.5 _____ 1855 ____ 0.0 ___ 6.0 _____ 1917 ____ 1.0 ___ 2.5 _____ 1979 ____ 0.0 ___ 2.0

1794 ____ 1.0 ___ 0.0 _____ 1856 ____ 2.5 ___ 2.0 _____ 1918 ____ 3.0 ___ 1.0 _____ 1980 ____ 1.0 ___ 1.0

1795 ____ 1.0 ___ 3.5 _____ 1857 ____ 1.0 ___ 0.0 _____ 1919 ____ 0.0 ___ 3.0 _____ 1981 ____ 0.0 ___ 3.33

1796 ____ 1.5*___2.5 _____ 1858 ____ 2.0 ___ 1.0 _____ 1920 ____ 0.0 ___ 2.5 _____ 1982 ____ 1.5 ___ 1.0

1797 ____ 0.0 ___ 0.0 _____ 1859 ____ 2.0 ___ 5.0 _____ 1921 ____ 7.0 ___ 1.0 _____ 1983 ____ 1.5 ___ 0.0

1798 ____ 0.0 ___ 3.5 _____ 1860 ____ 0.0 ___ 4.0* _____1922 ____ 2.5 ___ 0.0 _____ 1984 ____ 1.0 ___ 1.0

1799 ____ 0.0 ___ 3.5 _____ 1861 ____ 0.0 ___ 1.0 _____ 1923 ____ 3.0 ___ 1.0 _____ 1985 ____ 4.0 ___ 0.0

1800 ____ 1.0 ___ 0.0 _____ 1862 ____ 0.0 ___ 1.33_____ 1924 ____ 0.0 ___ 0.0 _____ 1986 ____ 0.0 ___ 2.0

1801 ____ 0.0 ___ 2.5 _____ 1863 ____ 0.0 ___ 1.0 _____ 1925 ____ 0.0 ___ 1.5 _____ 1987 ____ 2.0 ___ 2.0

1802 ____ 0.0 ___ 1.5 _____ 1864 ____ 0.0 ___ 2.3 _____ 1926 ____ 2.0 ___ 1.0 _____ 1988 ____ 0.0 ___ 0.0

1803 ____ 0.0 ___ 1.0 _____ 1865 ____ 0.5 ___ 0.0 _____1927 ____ 0.33___ 0.0_____ 1989 ____ 1.0 ___ 0.0

1804 ____ 1.5 ___ 0.0 _____ 1866 ____ 1.0 ___ 0.0 _____ 1928 ____ 0.0 ___ 1.0 _____ 1990 ____ 6.0 ___ 0.0

1805 ____ 0.0 ___ 0.0 _____ 1867 ____ 1.0 ___ 5.5 _____ 1929 ____ 0.0 ___ 4.0 _____ 1991 ____ 3.0 ___ 3.0

1806 ____ 0.0 ___ 0.0 _____ 1868 ____ 4.0 ___ 1.0 _____ 1930 ____ 4.0 ___ 0.0 _____ 1992 ____ 1.0 ___ 0.0

1807 ____ 0.0 ___ 7.5 _____ 1869 ____ 4.0 ___ 3.5 _____ 1931 ____ 0.33___ 3.0 _____ 1993 ____ 0.0 ___ 1.0

1808 ____ 3.0 ___ 1.5 _____ 1870 ____ 1.0 ___ 2.5 _____ 1932 ____ 2.0 ___ 0.0 _____ 1994 ____ 2.5 ___ 0.0

1809 ____ 0.0 ___ 0.5 _____ 1871 ____ 0.0 ___ 0.5 _____ 1933 ____ 0.0 ___ 0.0 _____ 1995 ____ 6.0 ___ 0.0

1810 ____ 0.0 ___ 2.0 _____ 1872 ____ 0.0 ___ 4.5 _____ 1934 ____ 2.0 ___ 0.0 _____ 1996 ____ 1.0 ___ 1.0

1811 ____ 0.0 ___ 0.0 _____ 1873 ____ 0.0 ___ 0.0 _____ 1935 ____ 2.0 ___ 1.0 _____ 1997 ____ 3.5 ___ 0.0

1812 ____ 0.0 ___ 8.5 _____ 1874 ____ 0.0 ___ 0.0 _____ 1936 ____ 0.0 ___ 1.0 _____ 1998 ____ 5.0 ___ 0.0

1813 ____ 1.0 ___ 1.0 _____ 1875 ____ 0.0 ___ 0.0 _____ 1937 ____ 0.0 ___ 0.0 _____ 1999 ____ 1.0 ___ 0.0

1814 ____ 1.0 ___ 5.0 _____ 1876 ____ 1.0 ___ 0.0 _____ 1938 ____ 2.5 ___ 0.0 _____ 2000 ____ 2.0 ___ 0.0

1815 ____ 0.0 ___ 1.0 _____ 1877 ____ 0.0 ___ 5.0 _____ 1939 ____ 2.0 ___ 0.0 _____ 2001 ____ 1.0 ___ 0.0

1816 ____ 0.0 ___ 9.5*_____1878 ____ 1.5 ___ 1.0 _____ 1940 ____ 1.0 ___ 0.0 _____ 2002 ____0.83___ 0.0

1817 ____ 1.0 ___ 2.5 _____ 1879 ____ 0.0 ___ 7.5 _____1941 ____ 1.0 ___ 0.0 _____ 2003 ____ 5.0*___ 0.0

1818 ____ 4.0 ___ 0.0 _____ 1880 ____ 1.0 ___ 3.0 _____ 1942 ____ 1.0 ___ 0.0 _____ 2004 ____ 4.5 ___ 0.0

1819 ____ 0.0 ___ 0.0 _____ 1881 ____ 0.0 ___ 6.5 _____ 1943 ____ 0.0 ___ 0.0 _____ 2005 ____ 6.5 ___ 0.0

1820 ____ 0.0 ___ 2.0 _____ 1882 ____ 1.0 ___ 0.0 _____ 1944 ____ 2.0 ___ 0.0 _____ 2006 ____ 4.0 ___ 0.0

1821 ____ 4.0 ___ 2.5 _____ 1883 ____ 0.0 ___ 2.0 _____ 1945 ____ 5.5 ___ 2.0 _____ 2007 ____ 2.0 ___ 0.0

1822 ____ 2.0 ___ 0.0 _____ 1884 ____ 1.0 ___ 1.0 _____ 1946 ____ 2.0 ___ 0.0 _____ 2008 ____ 3.0 ___ 0.0

1823 ____ 0.0 ___ 6.0 _____ 1885 ____ 0.0 ___ 2.0*_____1947 ___10.5 ___ 5.0 _____ 2009 ____ 2.0 ___ 0.0

1824 ____ 0.0 ___ 2.0 _____ 1886 ____ 2.0 ___ 1.0 _____ 1948 ____ 5.5 ___ 0.0 _____ 2010 ____ 0.0 ___ 4.0

1825 ____ 1.0 ___ 0.0 _____ 1887 ____ 0.0 ___ 1.0 _____ 1949 ____ 1.0 ___ 0.0 _____ 2011 ____10.5 ___ 0.0

1826 ____ 2.0 ___ 1.0 _____ 1888 ____ 2.5 ___ 5.5 _____ 1950 ____ 1.0 ___ 0.0 _____ 2012 ____ 1.0 ___ 0.0

1827 ____ 0.0 ___ 0.0 _____ 1889 ____ 0.0 ___ 0.0 _____ 1951 ____ 0.0 ___ 0.0 _____ 2013 ____ 1.0 ___ 0.0

1828 ____ 4.0 ___ 1.0 _____ 1890 ____ 1.0 ___ 3.0 _____ 1952 ____ 1.0 ___ 2.0 _____ 2014 ____ 3.0 ___ 0.0

1829 ____ 0.0 ___ 4.0 _____ 1891 ____ 0.0 ___ 1.0 _____ 1953 ____ 3.0 ___ 0.0 _____ 2015 ____ 8.5 ___ 0.0

1830 ____ 0.0 ___ 3.0 _____ 1892 ____ 0.0 ___ 3.5 _____ 1954 ____ 0.0 ___ 0.0 _____ 2016 ____ 6.0 ___ 0.0

1831 ____ 0.5 ___ 1.0 _____ 1893 ____ 4.0 ___ 0.0 _____ 1955 ____ 2.5 ___ 0.0 _____ 2017 ____ 4.5 ___ 0.0

1832 ____ 0.0 ___ 0.0 _____ 1894 ____ 1.0 ___ 3.0 _____ 1956 ____ 2.0 ___ 2.5 _____ 2018 ____ 5.0 ___ 1.0

1833 ____ 2.0 ___ 1.0 _____ 1895 ____ 4.0 ___ 7.0 _____ 1957 ____ 4.0 ___ 0.0 _____ 2019 ____ 5.0 ___ 0.0

_________________________________________________________________________________ 2020 ____ 8.0 ___ 0.0

_________________________________________________________________________________ 2021 ____ 4.0 ___ 0.0

_________________________________________________________________________________ 2022 ____ 9.5 ___ 0.0

_________________________________________________________________________________ 2023 ____10.5 ___ 0.0

_________________________________________________________________________________ 2024 ____ 3.5 ___ 0.0

 

... the above table is adjusted whenever 2024 sets a CET v2.0 record ...

These are the changes from the CET legacy count (includes various cases since 1 May 2022)

MAXIMUM _______________________________ MINIMUM

YEAR _ changes _ total ___ net change to year shown _ YEAR _ changes __ total ___ net change to year shown

1772 -0.5 __________ -0.5 ______________________________ 1778 _ -0.5 ______ -0.5

1773 -0.5 __________ -0.5 ______________________________ 1785 _+0.5 -1.0 _ -0.5

1775 +0.5 __________ +0.5 _____________________________ 1786 __+0.5 _____ +0.5

1780 -0.5 ___________ -0.5 _____________________________ 1796 __ +0.5 _____ +0.5

1781 -0.5 +0.5 ______ 0.0 ______________________________ 1798 __ +0.5 _____ +0.5

1796 +0.5 __________ +0.5 _____________________________ 1799 __ +0.5 _____ +0.5

1804 +0.5 -0.5 ______ 0.0 ______________________________ 1801 _ +1.0 -0.5 _ +0.5

________________________________________________________ 1807 __ -0.5 -0.5__ -1.0

__________________________________________ 1810 __ +1.0 _____ +1.0

_________________________________________________________1816 __ +0.5 +0.5 +1.0 _ +2.0 ________ +3.5 to 1816

_________________________________________________________1817 __ -0.5 _______ -0.5

1818 +0.5 ___________+0.5 ______________________________1820 __ -1.0 _______ -1.0

1821 +1.0 ___________+1.0 ______________________________1821 __ -0.5 _______ -0.5

1822 +0.5 ___________ +0.5 ______________________________1822 __ -1.0 _______ -1.0

_________________________________________________________ 1823 __ -0.5 _______ -0.5

1824 +0.5 ___________ +0.5 _____________________________ 1824 __ -0.5 ________ -0.5 __________ +0.5 to 1824

1826 +1.0 ___________ +1.0 ____________ +3.0 to 1826

1831 -0.5 ____________ -0.5 ____________________________ 1830 __ +0.5 ________ +0.5

 

________________________________________________________1835 __ +0.33 ______ +0.33

________________________________________________________1836 __ +0.5 ________ +0.5

________________________________________________________1837 _ +0.5 +0.5 -1.0 __ 0.0

1846 -1.0 ____________ -1.0 ____________________________ 1845 __ +1.0 +0.5 ____ +1.5

1852 -0.5 ____________ -0.5

1854 -0.5 ____________ -0.5 _____________________________1855 __ +1.0 _________+1.0 __________ +4.33 to 1855

1856 +0.5 ___________ +0.5

1858 -0.5 ____________ -0.5 _____________________________1860 __ +0.5 -0.5 _____ 0.0 

1865 -0.5 -0.5 ________-1.0 _____________________________1862 __ -0.67 ________ -0.67

1866 -1.0 ____________ -1.0 _____________________________1866 __ -1.0 ________ -1.0

________________________________________________________ 1867 __ -0.5 ________ -0.5

________________________________________________________ 1869 __ -0.5 ________ -0.5

1870 +0.5 ____________ +0.5 ____________________________ 1870 __ -0.5 ________ -0.5

________________________________________________________ 1871 _ -0.5 +0.5 _____ 0.0

1873 -0.5 _____________ -0.5 ___________________________ 1872 __ -0.5 _________-0.5

1874 -1.0 _____________ -1.0 ___________________________ 1874 __ -1.0 _________-1.0 ___________ -0.33 to 1874

1875 -1.0 _____________ -1.0 ___________________________ 1879 __ +0.5 ________+0.5

1878 -1.0 _____________ -1.0 ___________________________ 1880 __ +1.0 ________+1.0

1880 -1.0 _____________ -1.0 ___________ -5.5 to 1880 ___ 1881 __ +0.5 +0.5 __ +1.0

________________________________________________________ 1885 __ -0.5 +0.5 ____ 0.0

1886 +1.0 +1.0 -1.0 ___ +1.0 ___________________________ 1886 __ +0.5 _________+0.5 __________ +2.67 to 1886

_________________________________________________________1887 __ -1.0 _________ -1.0

_________________________________________________________1888 _ -1.0 -0.5 +0.5 __-1.0

_________________________________________________________ 1890 _ -0.5 +1.0 ______+0.5

_________________________________________________________ 1891 __ -0.5 __________-0.5

1893 -1.0 _____________ -1.0 ____________________________1892 _ -0.5 ___________-0.5 ___________ +0.17 to 1892

1894 +0.5 _____________ +0.5 ___________________________ 1894 __ +1.0 _________+1.0

1895 +1.0 _____________ +1.0 ___________________________ 1895 __ +0.5 +1.0 ____ +1.5

_________________________________________________________ 1896 __ +0.5 _________ +0.5 ____________ +3.17 to 1896

1898 -0.5 +1.0 -0.5 _____ 0.0 ___________________________ 1899 __ -0.5 __________ -0.5

_________________________________________________________1901 _ -0.5 -1.0 +0.5 __ -1.0

1903 +0.5, -1.0 ________ -0.5 ___________________________ 1903 __ +0.5 __________+0.5

_________________________________________________________1904 __ -1.0 __________ -1.0

1906 -1.0 +0.5 _________ -0.5 __________________________ 1907 __ -1.0 +0.5 _____ -0.5

________________________________________________________ 1908 __ -0.5 +1.0 _____ +0.5

________________________________________________________ 1909 __ -1.0, -0.5 _____ -1.5 _________ -0.33 to 1909

1912 -1.0 ______________ -1.0 ___________________________1910 __ +1.0 _________ +1.0 

________________________________________________________ 1912 __+1.0 +1.0 -1.0 +0.5_ +1.5

________________________________________________________ 1914 __ -0.5 __________ -0.5

_________________________________________________________1915 __ -1.0 -1.0 _____ -2.0

1916 -1.0 ______________ -1.0 _________ -7.0 to 1916 ____ 1917 __ -0.5, -0.5 _____ -1.0

1918 +1.0 _____________ +1.0 __________________________ 1919 __ -1.0 ___________-1.0

1921 +1.0 _____________ +1.0 __________________________ 1920 __ -0.5 __________ -0.5 __________ -2.83 to 1920

1922 +0.5 _____________ +0.5

1923 -1.0, +0.5 ________ -0.5

1926 -0.5 ______________ -0.5 ___________________________ 1926 __ +1.0 ________ +1.0

1927 -0.17, +1.0, ______ +0.83

1928 -1.0 ______________ -1.0

1931 -0.17 ____________ -0.17 __________________________1931 __ +0.5 _________ +0.5

1944 -0.5 ______________ -0.5 __________________________ 1934 __ -1.0 __________ -1.0

1945 -0.5 ______________ -0.5 __________________________ 1945 __ +1.0 _________ +1.0

1946 +0.5 _____________ +0.5

1947 +0.5 +1.0 ________ +1.5

1948 -0.5 ______________ -0.5

1955 +0.5 _____________ +0.5

1959 +0.5 -1.0 _________ -0.5 ____________ -5.33 to 1959

1966 +0.5 ______________ +0.5

1969 +1.0 ______________ +1.0 _________________________ 1973 __ -0.5 _______ -0.5

1976 -0.5, -0.5 _________ -1.0

1977 -1.0 -0.5 __________ -1.5

1978 -1.0 -0.5 __________ -1.5 __________________________ 1980 __ +1.0 _________ +1.0

1982 -0.5 -0.5 __________ -1.0 __________________________ 1981 __ +0.33 ________ +0.33

1983 +0.5 -0.5 __________ 0.0

1984 -0.5 ______________ -0.5

1989 -0.5 ______________ -0.5

1990 -0.5 ______________ -0.5 ___________________________ 1991 __ +0.5 _________ +0.5 __________ 0.0 to 1991

1994 -0.5 ______________ -0.5

1997 +0.5 -0.5 _________ 0.0

1998 -0.5 ______________ -0.5 ____________ -11.33 to 1998

2002 +0.5, +0.33 ______ +0.83

2003 +0.5 +0.5 ________ +1.0

2004 +0.5 _____________ +0.5

2005 +1.0 +1.0 +1.0 +1.0,-1.0 _ +3.0

2006 -1.0 +1.0 __________ 0.0

2007 +0.5 ______________ +0.5

2008 +0.5 ______________ +0.5

2011 +1.0 +1.0 +0.5  ___ +2.0

2013 +0.5 ______________ +0.5

2014 +1.0 ______________ +1.0

2015 +0.5 ______________ +0.5

2021 +1.0 -1.0 __________ 0.0

2022 gains 7.5 from 1825, 1911, 2006, 1998, 1927, 2005, 2015 (not shown in list above) and by tying in v2.0, one half record from 1888 (also not shown in list).

2023 gains 0.5 from 1878 (17 Feb) -- this is adjusted in the table but not in the list of changes above.

2023 gains 1.0 from 2006 (12 Jun) - adjusted in table but not in list above.

2023 gains 1.0 from 1818 (13 Jun) - adjusted in table but not in list above. 

2023 gains 2.5 from 1898 (6, 8, previous tie on 9 Sep) - adjusted in table but not in list above. 

2023 gains 1.0 from 1868 (7 Sep) - adjusted in table but not in list above. 

2023 gains 0.5 from 1781 (9 Sep tie) - adjusted in table but not in list above. 

2023 gains 0.5 from 1865 and 2011 (10 Sep) - adjusted in table but not in list above. 

2023 gains 1.0 from 1921 (7 Oct) - adjusted in table but not in list above. 

2023 gains 1.0 from 1843 (24 Dec) - adjusted in table but not in list above. 

2023 gains 1.0 from 1824 (25 Dec) - adjusted in table but not in list above. 

2024 gains 1.0 from 1958 (15 Feb) - adjusted in table but not in list above. 

2024 gains 1.0 from 1945 (18 Feb) - adjusted in table but not in list above.

2024 gains 1.0 from 1805 (14 Mar) - adjusted in table but not in list above.

2024 gains 0.5 from 1779 (20 Mar tied) - adjusted in table but not in list above.

(note, a recent finding, 1881 tied 1821 for v2.0 daily low value of 8.2 on 10 June -- counts are adjusted)

 

Edited by Roger J Smith
adjusted tables 15, 18 Feb 2024, 14 and 20 March
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  • Location: Rossland BC Canada
  • Location: Rossland BC Canada

Warmest and Coldest Day of each Year 1772-1830 (and coldest of each winter)

NOTE: With the change from CET legacy to v2.0 in 2022, all data 1772 to 1852 remain the same, with the exception of Dec 1786 which had been missing data, and was restored in the v2.0 data set. No changes to the 1786 or winter 1786-87 values were required as a result of that. 

These tables now show the legacy and v2.0 values for each year, starting with 1853 when they can be different. This first table ends in 1830 so remains unchangted. 

 

YEAR ... MAX DAILY MEAN (date) ... MIN DAILY MEAN (date) ... Coldest of winter (incl Jan-Mar of year, Nov-Dec previous year)

1772 ... 20.8 ... 26 June .................. -4.5 ... 06 Feb ...............-4.5 on 6 Feb .. no data Nov-Dec 1771

1773 ... 22.5 ... 10 Aug ................... -3.3 ... 09 Feb ...............-4.0 on 25 Dec 1772

1774 ... 20.2 ... 09 Aug ................... -3.2 ... 09 Dec .............. -3.0 on 4-5 Jan 1774

1775 ... 21.1 ... 21 July ................... -3.7 ... 25 Jan ............... -3.7 on 25 Jan 1775

1776 ... 20.3 ... 02 Aug ................... -7.5 ... 30 Jan ............... -7.5 on 30 Jan 1776

1777 ... 19.4 ... 16 & 17 July............ -5.0 ... 08 Jan,19 Feb ... -5.0 on 8 Jan & 19 Feb 1777

1778 ... 21.6 ... 13 July ................... -2.9 ... 27 Jan ................ -2.9 on 27 Jan 1778

1779 ... 22.0 ... 15 July ................... -5.1 ... 25 Dec ............... -1.4 on 15 Jan 1779

1780 ... 21.8 ... 01 Sep ................... -6.1 ... 13 Jan ............... -6.1 on 13 Jan 1780

1781 ... 20.9 ... 01 June .................. -2.9 ... 23 Jan ............... -2.9 on 23 Jan 1781

1782 ... 20.1 ... 26 June .................. -2.2 ... 16 Feb .............. -2.2 on 16 Feb 1782

1783 ... 22.6 ... 11 July .................... -7.1 ... 31 Dec .............. -4.7 on 26 Feb 1783

1784 ... 20.3 ... 07 July .................... -6.7 ..12 Feb, 11 Dec.... -7.1 on 31 Dec 1783

1785 ... 19.5 ... 27 June, 26 July ..... -6.6 ... 20 Feb ............... -6.7 on 11 Dec 1784

1786 ... 20.7 ... 05 June ...................-7.6 ... 03 Jan ................ -7.6 on 3 Jan 1786

1787 ... 19.9 ... 05 July .................... -2.2 ... 28 Nov ...............-5.6 on 26 Dec 1786**

1788 ... 20.4 ... 12 July .................... -5.9 ... 30 Dec .............. -2.5 on 8 March 1788

1789 ... 19.2 ... 05 Aug .................... -6.7 ... 12 Jan ............... -6.7 on 12 Jan 1789

1790 ... 21.8 ... 22 June .................. -0.6 ... 29 Dec ............... +0.6 on 20 Jan 1790

1791 ... 20.0 ... 05 June .................. -3.7 ... 12 Dec ................ -0.6 on 29 Dec 1790

1792 ... 21.8 ... 12 Aug ................... -5.4 ... 12 Jan ................. -5.4 on 12 Jan 1792

1793 ... 22.2 ... 16 July .................... -0.7 ... 30 Dec ............... -1.5 on 31 Dec 1792

1794 ... 20.6 ... 07 July .................... -2.8 ... 10 Jan ................ -2.8 on 10 Jan 1794

1795 ... 20.7 ... 12 Aug .................... -8.9 ... 25 Jan ................ -8.9 on 25 Jan 1795

1796 ... 19.6 ... 22 Aug .................. -10.8 ... 25 Dec .............. -1.4 on 6 & 7 March 1796

1797 ... 21.2 ... 14 July .................... -2.6 ... 09 Jan .............. -10.8 on 25 Dec 1796

1798 ... 21.4 ... 29 June .................. -8.4 ... 27 Dec ............... -1.6 on 19 Feb 1798

1799 ... 18.7 ... 10 June .................. -6.0 ... 31 Dec ................-8.4 on 27 Dec 1798

1800 ... 21.7 ... 02 Aug ................... -5.0 ... 01 Jan ................ -6.0 on 31 Dec 1799

1801 ... 20.2 ... 22 July ................... -3.8 ... 19 Dec ................ -1.3 on 13 Feb 1801

1802 ... 19.8 ... 06 Aug ................... -4.1 ... 13 Jan ................. -4.1 on 13 Jan 1802

1803 ... 20.8 ... 02 & 31 July ........... -5.9 ... 26 Jan ................. -5.9 on 26 Jan 1803

1804 ... 21.0 ... 01 Aug ................... -4.1 ... 24 Dec ................ -4.0 on 9 Dec 1803

1805 ... 18.9 ... 04 July ................... -3.8 ... 13 Dec ................ -4.1 on 24 Dec 1804

1806 ... 19.5 ... 10 June .................. -1.2 ... 30 Jan ................ -3.8 on 13 Dec 1805

1807 ... 21.2 ... 22 July .................... -5.4 ... 08 Dec ............... -2.5 on 18 & 19 Feb 1807

1808 ... 24.5 ... 13 July .................... -5.7 ... 22 Jan ................ -5.7 on 22 Jan 1808

1809 ... 18.5 ... 11 Aug*................... -5.1 ... 18 Jan ................ -5.1 on 18 Jan 1809

1810 ... 20.5 ... 02 Sep ................... -4.7 ... 21 Feb ................ -4.7 on 21 Feb 1810

1811 ... 18.6 ... 29 July ................... -3.6 ... 03 Jan ................. -3.6 on 3 Jan 1811

1812 ... 19.0 ... 18 July ................... -4.4 ... 08 Dec ................ -2.7 on 31 Dec 1811

1813 ... 20.2 ... 30 July ................... -3.2 ... 30 Dec ................ -4.4 on 8 Dec 1812

1814 ... 22.0 ....28 July ................... -6.7 ... 10 Jan ................. -6.7 on 10 Jan 1814

1815 ... 18.4 ... 12 July & 25 Aug..... -5.3 ... 24 Jan ................. -5.3 on 24 Jan 1815

1816 ....18.5 ... 20 July ................... -8.8 ... 09 Feb ................. -8.8 on 9 Feb 1816

1817 ... 22.7 ... 21 June ................. -2.0 ... 10 Jan .................. -4.9 on 22 Dec 1816

1818 ... 23.9 ... 24 July ................... -3.0 ... 17 Dec ................. -2.0 on 1 Jan 1818

1819 ... 21.8 ... 31 July ................... -6.0 ... 11 Dec ................. -3.0 on 17 Dec 1818

1820 ....21.9 ... 28 June .................. -8.5 ... 15 Jan ................. -8.5 on 15 Jan 1820

1821 ... 19.8 ... 05 Aug ................... -3.3 ... 02 Jan ................. -3.3 on 2 Jan 1821

1822 ....21.1 ... 10 Jun .................... -3.8 ... 28 Dec ................ +0.7 on 16 Jan 1822

1823 ... 19.2 ... 20 July & 14 Sep .... -8.9 ... 19 Jan ................. -8.9 on 19 Jan 1823

1824 ... 21.1 ... 02 Sep .................. -0.9 ... 14 Jan ................. -0.9 on 14 Jan 1824

1825 ... 23.7 ... 15 July .................. -1.2 ... 27 Dec ................. -0.7 on 4 Feb 1825

1826 ... 22.8 ... 27 June .................. -6.9 ... 15 Jan ................. -6.9 on 15 Jan 1826

1827 ... 20.7 ... 29 July ................... -4.7 ... 03 Jan ................. -4.7 on 03 Jan 1827

1828 ... 20.9 ... 03 July .................. -1.0 ... 09 Jan ................ -1.0 on 22 Nov 1827 & 9 Jan 1828

1829 ... 19.0 ... 03 June .................. -4.8.... 23 Jan ................ -4.8 on 23 Jan 1829

1830 ... 22.5 ... 30 July .................... -6.7 ... 24 Dec ................ -6.4 on 6 Feb 1830

_______________________________________________________

* worth noting that 18.4 on 19 May was just 0.1 below the annual max.

** the winter of 1786-87 had incomplete daily data in CET legacy; this note was in place before v2.0 data added the missing data ...

December dates are all listed as 2.8 (in CET legacy) which is the monthly mean but it's unlikely that this was the case, probably some day reached a value below the -0.5 C recorded in Nov 1786 and Jan 1787, a good estimate from the mean would be -3.5 C. (actually it turned out to be -5.4 on 26 Dec in the v2.0 data).

Edited by Roger J Smith
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  • Location: Rossland BC Canada
  • Location: Rossland BC Canada

Annual Daily Max and Min, Winter's coldest day ... 1831 to 1900

.... .... continued from previous post (1772-1830) .... ....

Now shows CET legacy and CET v2.0 values from 1853 on. (no changes were made from legacy to v2.0 up to 1852) ... the two sets are shown with the codes L and v2 for legacy and v2.0, starting with 1853. 

 

YEAR ..... MAX daily mean CET .... MIN daily mean CET .... Winter seasonal minimum (incl Jan-Feb of year)

1831 ... 20.2 ... 09 July .................... -3.0 ... 30 Jan ................. -6.7 on 24 Dec 1830

1832 ... 19.9 ... 10 Aug .................... -1.9 ... 01 Jan ................ -1.9 on 01 Jan 1832

1833 ... 20.0 ... 15 May & 28 July ..... -2.6 ... 23 Jan ............... -2.6 on 23 Jan 1833

1834 ... 22.3 ... 17 July .................... +0.4 ... 08 Feb ............... +0.4 on 8 Feb 1834

1835 ... 20.7 ... 10 & 11 Aug ............ -5.2 ... 07 Jan ................ -5.2 on 7 Jan 1835

1836 ... 22.1 ... 05 July .................... -3.5 ... 02 Jan ................ -3.5 on 2 Jan 1836

1837 ... 21.2 ... 27 July .................... -3.3 ... 01 Jan ................ -3.3 on 1 Jan 1837

1838 ... 20.3 ... 13 July .................. -11.9 ... 20 Jan ............. -11.9 on 20 Jan 1838

1839 ... 18.9 ... 03 Aug .................... -3.0 ... 30 Jan .................-3.0 on 30 Jan 1839

1840 ... 19.6 ... 06 Aug ................... -4.4 ... 25 Dec ................ -4.1 on 07 Jan 1840

1841 ... 18.8 ... 27 Aug .................... -9.2 ... 08 Jan ................ -9.2 on 8 Jan 1841

1842 ... 21.9 ... 10 Aug .................... -1.8 ... 09 Jan ................ -2.7 on 18 Dec 1841

1843 ... 20.4 ... 05 July .................... -3.5 ... 15 Feb ............... -3.5 on 15 Feb 1843

1844 ... 21.6 ... 23 June ................... -5.5 ... 06 Dec ............... -3.1 on 13 Feb 1844

1845 ... 19.6 ... 15 June ................... -7.7 ... 12 Feb ............... -7.7 on 12 Feb 1845

1846 ... 22.0 ... 22 June ................... -4.2 ... 14 & 15 Dec ....... -0.3 on 13 Dec 1845, 5 Jan 1846

1847 ... 22.5 ... 14 July .................... -5.0 ... 09 Feb ................ -5.0 on 9 Feb 1847

1848 ... 20.5 ... 06 July .................... -4.4 ... 28 Jan ................. -4.4 on 28 Jan 1848

1849 ... 19.0 ... 07 Aug .................... -3.8 ... 02 Jan & 28 Dec...-3.8 on 2 Jan 1849

1850 ... 21.3 ... 15 July .................... -2.8 ... 07 Jan ................. -3.8 on 28 Dec 1849

1851 ... 20.3 ... 27 June .................. -0.4 ... 30 Nov ................ -0.2 on 24 Jan 1851

1852 ... 24.0 ... 05 July .................... -0.5 ... 20 Feb ............... -0.5 on 20 Feb 1852

L 1853 ... 18.8 ... 07 July ................. -5.0 ... 28 Dec ............... -3.2 on 13 Feb 1853

v2 1853.. 18.8 ... 07 July ................. -4.9 ... 28 Dec ................ -3.1 on 13 Feb 1853

L 1854 ... 21.2 ... 24 July .................. -4.6 ... 02 Jan ................ -5.0 on 28 Dec 1853

v2 1854.. 21.1 ... 24 July ................... -4.4 ... 02 Jan ................ -4.9 on 28 Dec 1853

L 1855 ... 20.3 ... 23 July ................... -7.3 ... 16 Feb ............... -7.3 on 16 Feb 1855

v2 1855 . 20.3 ... 23 July ................... -7.2 ... 16 Feb ............... -7.2 on 16 Feb 1855

L 1856 ... 22.2 ... 02 Aug ................... -3.0 ... 28 Dec ............... -4.7 on 21 Dec 1855

v2 1856 . 22.1 ... 02 Aug ................... -2.9 ... 28 Dec ............... -4.6 on 21 Dec 1856

L 1857 ... 21.1 .. 28 June & 23 Aug ....-3.0 ... 29 Jan ............... -3.0 on 28 Dec 1856 & 29 Jan 1857

v2 1857 ..21.0 .. 28 June & 23 Aug ... -2.8 ... 29 Jan ................ -2.9 on 28 Dec 1856

L 1858 ... 22.9 ... 15 June .................. -4.2 ... 23 Nov ................ -2.0 on 10 Mar 1858

v2 1858 ..22.8 ... 15 June .................. -3.9 ... 23 Nov ................ -1.8 on 10 Mar 1858

L 1859 ... 22.2 ... 18 July .................... -7.7 ... 17 Dec ................-4.2 on 23 Nov 1858

v2 1859 . 22.2 ... 18 July .................... -7.5 ... 17 Dec ................-3.9 on 23 Nov 1858

L 1860 ... 17.2 ... 05 July .................... -3.9 ... 13 Feb ............... -7.7 on 17 Dec 1859

v2 1860 . 17.2 ... 05 July .................... -3.8 ... 13 Feb ............... -7.5 on 17 Dec 1859

L 1861 ... 19.6 ... 12 Aug .................... -3.4 ... 29 Dec ............... -3.7 on 20 & 27 Dec 1860

v2 1861 . 19.5 ... 12 Aug .................... -3.3 ... 29 Dec ............... -4.0 on 27 Dec 1860

L 1862 ... 17.3 ... 01 Aug .................... -2.6 ... 18 Jan ................ -3.4 on 29 Dec 1861

v2 1862 . 17.3 ... 01 Aug .................... -2.4 ... 18 Jan ................ -3.3 on 29 Dec 1861

L 1863 ... 19.5 ... 07 Aug .................... +0.9 ... 11 Jan .............. -1.1 on 13 Nov 1862

v2 1863 . 19.5 ... 07 Aug .................... +0.9 ... 11 Jan .............. -0.9 on 13 Nov 1862

L 1864 ... 19.7 ... 30 Aug .................... -6.2 ... 06 Jan ................ -6.2 on 6 Jan 1864

v2 1864 . 19.6 ... 30 Aug .................... -5.9 ... 06 Jan ................ -5.9 on 6 Jan 1864

L 1865 ... 19.9 ... 04 & 24 July ............ -6.1 ... 28 Jan ................ -6.1 on 28 Jan 1865

v2 1865 . 19.9 ... 04 & 24 July ............ -5.9 ... 28 Jan ................ -5.9 on 28 Jan 1865

L 1866 ... 20.6 ... 12 July .................... -3.2 ... 28 Feb ............... -3.2 on 28 Feb 1866

v2 1866 . 20.5 ... 12 July .................... -3.0 ... 28 Feb ............... -3.0 on 28 Feb 1866

L 1867 ... 20.4 ... 13 Aug .................... -9.3 ... 04 Jan ................ -9.3 on 4 Jan 1867

v2 1867 . 20.3 ... 13 Aug .................... -9.0 ... 04 Jan ................ -9.0 on 4 Jan 1867

L 1868 ... 23.2 ... 22 July .................... -1.4 ... 01 & 02 Jan ........ -1.4 on 1 & 2 Jan 1868

v2 1868 . 23.1 ...21 & 22 July ............ -1.1 ... 01 & 02 Jan ........ -1.1 on 1 & 2 Jan 1868

L 1869 ... 21.9 ... 17 July .................... -2.7 ... 28 Dec ................. -0.7 on 24 Jan 1869

v2 1869 . 21.9 ... 17 July .................... -2.6 ... 28 Dec ................. -0.5 on 24 Jan 1869

L 1870 ... 21.4 ... 08 July .................... -6.9 ... 24 Dec ................ -3.2 on 26 Jan & 11 Feb 1870

v2 1870 . 21.4 ... 08 July .................... -6.7 ... 24 Dec ................ -3.1 on 11 Feb 1870

L 1871 ... 21.6 ... 13 Aug .................... -3.6 ... 01 Jan ................ -6.9 on 24 Dec 1870

v2 1871 . 21.6 ... 13 Aug .................... -3.6 ... 01 Jan ................ -6.7 on 24 Dec 1870

L 1872 ... 22.0 ... 25 July ................. +0.7 .. 21 Mar & 11 Dec .. -2.3 on 8 Dec 1871

v2 1872 . 22.0 ... 25 July ..................... +0.8* ...11 Dec .............. -2.1 on 8 Dec 1871

L 1873 ... 22.3 ... 22 July .................... -2.9 ... 10 & 11 Dec ....... -1.5 on 1 Feb 1873

v2 1873 . 22.3 ... 22 July .................... -2.7 ... 10 & 11 Dec ....... -1.4 on 1 Feb 1873

L 1874 ... 21.4 ... 09 July .................... -5.5 ... 22 Dec ................ -2.9 on 10 & 11 Dec 1873

v2 1874 . 21.3 ... 09 July .................... -5.4 ... 22 Dec ................ -2.7 on 10 & 11 Dec 1873

L 1875 ... 19.2 ... 08 Aug .................... -1.7 ... 05 Dec ................ -5.5 on 22 Dec 1874

v2 1875 . 19.2 ... 08 Aug .................... -1.5 ... 05 Dec ................ -5.4 on 22 Dec 1874

L 1876 ... 22.4 ... 17 Aug .................... -3.3 ... 11 Feb ............... -3.3 on 11 Feb 1876

v2 1876 . 22.4 ... 17 Aug .................... -3.1 ... 11 Feb ............... -3.1 on 11 Feb 1876

L 1877 ... 19.6 ... 20 Aug .................... -1.0 ... 28 Feb ................ -1.0 on 28 Feb 1877

v2 1877 . 19.6 ... 20 Aug .................... -0.8 ... 28 Feb ................ -0.8 on 28 Feb 1877

L 1878 ... 22.9 ... 20 July .................... -5.8 ... 25 Dec ................ +0.4 on 27 Dec 1877

v2 1878 . 22.7 ... 27 June ................... -6.3 ... 25 Dec ................ +0.4 on 1 & 9 Feb 1878**

L 1879 ... 18.4 ... 12 Aug .................... -5.7 ... 07 Dec .................-5.8 on 25 Dec 1878

v2 1879 . 18.4 ... 12 Aug .................... -5.7 ... 11 Jan^.................-6.3 on 25 Dec 1878

L 1880 ... 20.7 ... 04 Sep .................... -4.3 ... 20 Jan ................. -5.7 on 07 Dec 1879

v2 1880 . 20.1 ... 04 Sep .................... -4.4 ... 20 Jan ................. -5.3 on 07 Dec 1879

L 1881 ... 21.9 ... 05 July .................... -8.1 ... 21 Jan ................ -8.1 on 21 Jan 1881

v2 1881 . 21.7 ... 05 July .................... -8.0 ... 21 Jan ................ -8.0 on 21 Jan 1881

L 1882 ... 18.6 ... 13 Aug .................... -3.7 ... 11 Dec ............... -1.0 on 10 Dec 1881

v2 1882 . 18.2 ... 13 Aug .................... -4.4 ... 11 Dec ............... -0.9 on 10 Dec 1881

L 1883 ... 19.0 ... 30 June .................. -2.4 ... 10 Mar ............... -3.7 on 11 Dec 1882

v2 1883 . 18.9 ..29 & 30 June ........... -2.1 ... 10 Mar ............... -4.4 on 11 Dec 1882

L 1884 ... 22.5 ... 11 Aug .................... -1.1 ... 23 Dec ................ -0.1 on 7 Dec 1883

v2 1884 . 22.4 ... 11 Aug .................... -0.9 ... 23 Dec ................ -0.1 on 6 Dec 1883

L 1885 ... 21.1 ... 26 July .................... -2.1 ... 08 Dec ................ -1.1 on 23 Dec 1884

v2 1885 . 21.2 ... 26 July .................... -1.9 ... 11 Dec ................ -1.3 on 21 Jan 1885^^

L 1886 ... 20.7 ... 04 July .................... -3.3 ... 20 Dec ............... -2.7 on 7 Jan 1886

v2 1886 . 20.9 ... 04 July .................... -4.0 ... 7 Jan & 31 Dec ... -4.0 on 7 Jan 1886

L 1887 ... 20.6 ... 06 Aug .................... -3.9 ... 01 Jan ................ -3.9 on 01 Jan 1887

v2 1887 . 20.2 ... 03 July .................... -3.7 ... 01 Jan ................ -4.0 on 31Dec 1886

L 1888 ... 19.6 ... 10 Aug .................... -1.8 ... 25 Feb ............... -2.3 on 27 Dec 1887

v2 1888 . 19.6 ... 10 Aug .................... -2.1 ... 25 Feb ........... -2.1 on 27 Dec 1887 & 25 Feb 1888

L 1889 ... 19.2 ... 12 Sep .................... -2.7 ... 10 Feb ................-2.7 on 10 Feb 1889

v2 1889 . 18.7 ... 12 Sep .................... -2.7 ... 10 Feb ................-2.7 on 10 Feb 1889

L 1890 ... 18.2 ... 05 Aug .................... -6.8 ... 22 Dec ................ -2.0 on 2 Jan & 3 Mar 1890

v2 1890 . 18.0 ... 31 July .................... -5.7 ... 22 Dec ................ -2.2 on 29 Dec 1889 a

L 1891 ... 18.8 ... 25 June ................... -6.1 ... 18 Jan ................ -6.8 on 22 Dec 1890

v2 1891 . 18.6 ... 25 June ................... -6.2 ... 18 Jan ................ -6.2 on 18 Jan 1891

L 1892 ... 19.4 ... 03 July .................... -5.0 ... 28 Dec ............... -4.9 on 24 Dec 1891

v2 1892 . 18.9 ... 03 July ................ -4.9 ... 19 Feb & 27 Dec ... -5.7 on 23 Dec 1891

L 1893 ... 22.6 ... 18 Aug .................... -5.0 ... 05 Jan ................ -5.0 on 28 Dec 1892 & 5 Jan 1893

v2 1893 . 22.0 ... 18 Aug .................... -4.6 ... 05 Jan ................ -4.9 on 27 Dec 1892 (5 Jan 1893 -4.6)

L 1894 ... 20.1 ... 01 July .................... -6.9 ... 06 Jan ................ -6.9 on 6 Jan 1894

v2 1894 . 20.1 ... 01 July .................... -7.0 ... 06 Jan ................ -7.0 on 6 Jan 1894

L 1895 ... 20.0 ... 26 June ................... -8.3 ... 08 Feb ............... -8.3 on 8 Feb 1895

v2 1895 . 19.9 ... 26 June ................... -8.5 ... 08 Feb ............... -8.5 on 8 Feb 1895 b

L 1896 ... 20.7 ... 16 June ................... -0.9 ... 21 Jan & 30 Nov.. -0.9 on 21 Jan 1896

v2 1896 . 20.7 ... 16 June ................... -0.8 ... 30 Nov ................. -0.7 on 25 & 26 Feb 1896 c

L 1897 ... 22.2 ... 05 Aug .................... -2.8 ... 23 Dec ................ -2.2 on 23 Jan 1897

v2 1897 . 21.7 ... 04 Aug .................... -2.2 ... 23 Jan ................. -2.2 on 23 Jan 1897

L 1898 ... 21.3 ... 08 Sep .................... +0.2 ... 21 Feb ................ -2.8 on 23 Dec 1897

v2 1898 . 21.6 ... 08 Sep .................... -0.4 ... 21 Feb ................ -1.7 on 23 Dec 1897

L 1899 ... 21.1 ... 20 July .................... -4.8 ... 14 Dec ............... -1.6 on 21 Mar 1899

v2 1899 . 20.8 ... 24 Aug .....................-5.2 ... 14 Dec ............... -1.6 on 21 Mar 1899

L 1900 ... 22.0 ... 20 July .................... -3.4 ... 08 Feb ................ -4.8 on 14 Dec 1899

v2 1900 . 22.3 ... 20 July .................... -3.9 ... 08 Feb ................ -5.2 on 14 Dec 1899

__________________________________________

* 21 Mar 1872 was 0.9 in v2.0, legacy tie broken

** 27 Dec 1877 was 0.5 in v2.0, 1 and 9 Feb 1878 were 0.7 in CET legacy _ change of date as a result for winter 1877-78

^ 11 Jan 1879 was -4.8 in CET legacy, 7 Dec 1879 was -5.3 in v2.0, result was change of annual minimum value

^^ 21 Jan 1885 was -0.6 in CET legacy, 11 Dec 1884 was -0.9 in v2.0, result was change of winter min 1884-85

a 29 Dec 1889 was -1.7 in CET legacy, 2 Jan and 3 Mar 1890 were -2.0 in v2.0, result was change of date for winter min 1889-90

b 27 Sep 1895 was 19.7 in CET v2.0, almost made it as annual maximum

c 21 Jan 1896 was -0.5 in CET v2.0 and drops out of tie for annual minimum, replaced as winter minimum 1895-96 

Edited by Roger J Smith
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  • Location: Rossland BC Canada
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Annual extremes for 1901-60 with coldest day of winter season

.... .... continued from above tables .... ....

 

NOTE: These annual extremes are now presented in both Legacy (L) and v2.0 (v2) lines of data. 

 

YEAR ... MAX daily mean (date) .... MIN daily mean (date) .... WINTER MIN (date)

_________________________________________________________________________

L 1901 ... 22.6 ... 19 July .................... -3.5 ... 22 Dec ............... -2.6 on 14 Feb 1901

v2 1901 . 22.4 ... 19 July .................... -3.3 ... 22 Dec ............... -2.7 on 14 Feb 1901

L 1902 ... 20.0 ... 28 June .................. -3.6 ... 13 Feb ............... -3.6 on 13 Feb 1902

v2 1902 . 19.9 ... 28 June .................. -3.6 ... 13 Feb ............... -3.6 on 13 Feb 1902

L 1903 ... 20.2 ... 09 July .................... -3.3 ... 14 Jan ................ -3.3 on 14 Jan 1903

v2 1903 . 19.6 ... 28 June ................... -2.9 ... 14 Jan ................ -2.9 on 14 Jan 1903

L 1904 ... 21.4 ... 04 Aug .................... -4.6 ... 24 Nov ............... -2.6 on 29 Dec 1903

v2 1904 . 20.6 ... 04 Aug .................... -3.5 ... 24 Nov ............... -2.4 on 29 Dec 1903

L 1905 ... 19.5 ... 09,13,14 July .......... -1.8 ... 16 Jan ................ -4.6 on 24 Nov 1904

v2 1905 . 19.7 ... 09 July ..................... -1.3 ... 20 Jan ................ -3.5 on 24 Nov 1904

L 1906 ... 22.6 ... 02 Sep .................... -2.5 ... 26 Dec ............... -0.7 on 18 Nov 1905

v2 1906 . 22.3 ... 02 Sep .................... -1.7 ... 27 Dec ................ 0.0 on 18 Nov 1905

L 1907 ... 18.0 ... 16 July .................... -3.4 ... 24 Jan ................ -3.4 on 24 Jan 1907

v2 1907 . 18.1 ... 16 July .................... -3.6 ... 24 Jan ................ -3.6 on 24 Jan 1907

L 1908 ... 19.6 ... 30 Sep .................... -5.2 ... 30 Dec ............... -2.4 on 05 Jan 1908

v2 1908 . 19.5 ... 30 Sep .................... -5.3 ... 29 Dec ............... -2.7 on 12 Jan 1908

L 1909 ... 20.3 ... 15 Aug .................... -2.9 ... 04 Mar ................-5.2 on 30 Dec 1908

v2 1909 . 20.0 ... 15 Aug .................... -2.3 ... 05 Mar ................-5.3 on 29 Dec 1908

L 1910 ... 18.7 ... 20 & 21 June .......... -3.6 ... 27 Jan ................ -3.6 on 27 Jan 1910

v2 1910 . 18.8 ... 20 June ................... -3.4 ... 26 Jan ................ -3.4 on 26 Jan 1910

L 1911 ... 23.6 ... 13 Aug .................... -2.4 ... 02 Feb ............... -2.4 on 2 Feb 1911

v2 1911 . 23.9 ... 13 Aug .................... -1.9 ... 02 Feb ............... -1.9 on 2 Feb 1911

L 1912 ... 22.0 ... 15 & 16 July ............ -5.0 ... 04 Feb ............... -5.0 on 4 Feb 1912

v2 1912 . 22.3 ... 15 July ..................... -4.8 ... 04 Feb ............... -4.8 on 4 Feb 1912

L 1913 ... 18.9 ... 27 Sep .................... -1.9 ... 31 Dec ............... -0.9 on 30 Nov 1912 & 13 Jan 1913

v2 1913 . 19.3 ... 27 Sep .................... -1.7 ... 31 Dec ............... -0.9 on 30 Nov 1912 (-0.4 13 Jan 1913)

L 1914 ... 21.0 ... 30 June ................... -0.4 ... 23 Jan ............... -1.9 on 31 Dec 1913

v2 1914 . 21.0 ... 30 June ................... -0.5 ... 23 Jan ............... -1.7 on 31 Dec 1913

L 1915 ... 19.5 ... 08 June ................... -2.6 ... 27 Nov ............... -0.1 on 23 Dec 1914

v2 1915 . 19.2 ... 08 June & 10 Aug ... -2.0 ... 27 Nov .............. -0.1 on 23 Dec 1914

L 1916 ... 20.0 ... 12 Aug .................... -2.3 ... 16 Dec ............... -2.6 on 27 Nov 1915

v2 1916 . 20.4 ... 12 Aug .................... -2.2 ... 16 Dec ............... -2.0 on 27 Nov 1915

L 1917 ... 21.4 ... 17 June ................... -7.2 ... 07 Feb ............... -7.2 on 7 Feb 1917

v2 1917 . 21.3 ... 17 June ................... -6.2 ... 07 Feb ............... -6.2 on 7 Feb 1917

L 1918 ... 21.0 ... 22 Aug .................... -3.3 ... 08 Jan ................ -3.3 on 8 Jan 1918

v2 1918 . 20.6 ... 21 & 22 Aug ........... -2.8 ... 08 Jan ................ -2.8 on 8 Jan 1918

L 1919 ... 19.9 ... 16 Aug .................... -3.6 ... 09 Feb ................-3.6 on 9 Feb 1919

v2 1919 . 19.5 ... 11 June & 16 Aug ... -3.8 ... 09 Feb ................-3.8 on 9 Feb 1919

L 1920 ... 18.5 ... 25 May..................... -5.1 ... 13 Dec ............... -1.4 on 12 Nov 1919

v2 1920 . 18.2 ... 25 May..................... -4.4 ... 13 Dec ............... -1.5 on 12 Nov 1919

L 1921 ... 22.3 ... 18 July .................... -0.5 ... 09 Nov ................ -5.1 on 13 Dec 1920

v2 1921 . 22.7 ... 19 July .................... +0.2 ... 09 Nov ................ -4.4 on 13 Dec 1920

L 1922 ... 19.5 ... 23 May .................... -2.8 ... 06 Feb ............... -2.8 on 6 Feb 1922

v2 1922 . 19.4 ... 23 May .................... -2.6 ... 06 Feb ............... -2.6 on 6 Feb 1922

L 1923 ... 24.0 ... 13 July .................... -2.2 ... 27 Nov ......,......... +1.2 on 20 Feb 1923

v2 1923 . 24.0 ... 13 July .................... -2.5 ... 27 Nov ......,......... +1.2 on 20 Feb 1923

L 1924 ... 21.2 ... 12 July .................... -1.7 ... 09 Jan ................ -2.2 on 27 Nov 1923

v2 1924 . 21.2 ... 12 July .................... -1.7 ... 09 Jan ................ -2.5 on 27 Nov 1923

L 1925 ... 22.3 ... 22 July .................... -3.8 ... 04 Dec ................ +0.9 on 13 Mar 1925

v2 1925 . 22.2 ... 22 July .................... -3.6 ... 04 Dec ............ +1.6 on 12,13,22 Mar 1925

L 1926 ... 22.1 ... 14 July .................... -4.8 ... 16 Jan ................. -4.8 on 16 Jan 1926

v2 1926 . 22.3 ... 14 July .................... -4.3 ... 17 Jan ................. -4.3 on 17 Jan 1926

L 1927 ... 19.3 ... 06 Aug .................... -4.4 ... 19 Dec ................ -1.9 on 11 & 12 Feb 1927

v2 1927 . 19.3 ... 06 Aug .................... -4.7 ... 19 Dec ................ -1.8 on 11 & 12 Feb 1927

L 1928 ... 19.2 ... 24 July .................... -1.5 ... 15 Dec ................ -4.4 on 19 Dec 1927

v2 1928 . 19.4 ... 25 July .................... -1.1 ... 11 Mar ................ -4.7 on 19 Dec 1927 *

L 1929 ... 20.8 ... 16 July .................... -8.0 ... 15 Feb .................-8.0 on 15 Feb 1929

v2 1929 . 21.0 ... 16 July .................... -7.4 ... 15 Feb .................-7.4 on 15 Feb 1929

L 1930 ... 22.8 ... 27 Aug .................... -1.7 ... 17 Nov ................ -1.0 on 20 Mar 1930

v2 1930 . 23.1 ... 27 Aug .................... -1.4 ... 17 Nov ................ -0.5 on 20 Mar 1930

L 1931 ... 18.7 ... 04 Aug .................... -2.1 ... 07 Mar ................ -2.1 on 7 Mar 1931

v2 1931 . 18.7 ... 04 Aug .................... -2.2 ... 07 Mar ................ -2.2 on 7 Mar 1931

L 1932 ... 22.8 ... 19 Aug .................... -2.0 ... 10 Feb ............... -2.0 on 10 Feb 1932

v2 1932 . 22.8 ... 19 Aug .................... -1.9 ... 10 Feb ........... -1.9 on 19 Dec 1931 & 10 Feb 1932

L 1933 ... 22.2 ... 04 Aug ................... -3.0 ... 24 Jan ................ -3.0 on 24 Jan 1933

v2 1933 . 22.2 ... 04 Aug ................... -2.9 ... 24 Jan ................ -2.9 on 24 Jan 1933

L 1934 ... 20.9 ... 07 July .................... -0.2 ... 02 Feb ................ -0.4 on 6 & 10 Dec 1933

v2 1934 . 20.9 ... 07 July .................... -0.2 ... 02 Feb ................ -0.4 on 10 Dec 1933 (-0.3 6 Dec)

L 1935 ... 22.0 ... 24 June ................... -4.0 ... 23 Dec ................ -0.2 on 9 & 28 Jan 1935

v2 1935 . 22.1 ... 24 June ................... -4.0 ... 23 Dec ................ -0.2 on 28 Jan 1935 (-0.1 9 Jan)

L 1936 ... 21.6 ... 21 June ................... -1.6 ... 13 Feb ............... -4.0 on 23 Dec 1935

v2 1936 . 21.7 ... 21 June ................... -1.7 ... 13 Feb ............... -4.0 on 23 Dec 1935

L 1937 ... 21.4 ... 03 July .................... -1.1 ... 29 Jan & 18 Dec . -1.1 on 29 Jan 1937

v2 1937 . 21.4 ... 03 July .................... -1.1 ... 18 Dec ................. -1.0 on 29 Jan 1937

L 1938 ... 20.8 ... 01 Aug .................... -4.2 ... 20 Dec ................ -1.1 on 18 Dec 1937

v2 1938 . 20.8 ... 01 Aug .................... -4.1 ... 20 Dec ................ -1.1 on 18 Dec 1937

L 1939 ... 20.6 ... 07 June ................... -2.3 ... 30 Dec .................-4.2 on 20 Dec 1938

v2 1939 . 20.6 ... 07 June ................... -2.3 ... 29 & 30 Dec ........-4.1 on 20 Dec 1938

L 1940 ... 20.4 ... 08 & 09 June .......... -7.1 ... 21 Jan ................. -7.1 on 21 Jan 1940

v2 1940 . 20.3 ... 09 June ................... -7.0 ... 21 Jan ................. -7.0 on 21 Jan 1940

L 1941 ... 22.5 ... 12 July .................... -3.6 ... 16 Jan ................. -3.6 on 16 Jan 1941

v2 1941 . 22.3 ... 22 June & 12 July ... -3.5 ... 03 & 16 Jan ...... -3.5 on 03 & 16 Jan 1941

L 1942 ... 23.0 ... 28 Aug .................... -5.0 ... 21 Jan ................ -5.0 on 21 Jan 1942

v2 1942 . 23.0 ... 28 Aug .................... -4.9 ... 21 Jan ................ -4.9 on 21 Jan 1942

L 1943 ... 23.4 ... 31 July .................... -1.4 ... 14 Dec ................ -0.9 on 4 Jan 1943

v2 1943 . 23.4 ... 31 July .................... -1.4 ... 14 Dec ................ -0.9 on 4 Jan 1943

L 1944 ... 21.1 ... 29 May .................... -1.9 ... 26 Dec ............... -1.4 on 14 Dec 1943

v2 1944 . 21.1 ... 29 May .................... -1.9 ... 25 & 26 Dec ...... -1.4 on 14 Dec 1943

L 1945 ... 21.0 ... 15 July .................... -7.6 ... 26 Jan ................ -7.6 on 26 Jan 1945

v2 1945 . 21.0 ... 15 July .................... -7.5 ... 26 Jan ................ -7.5 on 26 Jan 1945

L 1946 ... 19.8 ... 02 July .................... -3.7 ... 20 Jan ................ -3.7 on 20 Jan 1946

v2 1946 . 19.8 ... 02 July .................... -3.6 ... 20 Jan ................ -3.6 on 20 Jan 1946

L 1947 ... 23.0 ... 03 June ................... -6.7 ... 24 Feb ............... -6.7 on 24 Feb 1947

v2 1947 . 22.9 ... 03 June ................... -6.6 ... 24 Feb ............... -6.6 on 24 Feb 1947

L 1948 ... 25.2 ... 29 July .................... -2.7 ... 21 Feb ............... -3.0 on 1 Dec 1947

v2 1948 . 25.1 ... 29 July .................... -2.6 ... 21 Feb ............... -3.0 on 1 Dec 1947

L 1949 ... 22.4 ... 05 Sep .................... -0.6 ... 04 Feb ................-1.8 on 26 Dec 1948

v2 1949 . 22.4 ... 05 Sep .................... -0.5 ... 04 Feb ................-1.7 on 26 Dec 1948

L 1950 ... 22.5 ... 06 June ................... -2.8 ... 26 Jan ................ -2.8 on 26 Jan 1950

v2 1950 . 22.4 ... 06 June ................... -2.8 ... 26 Jan ................ -2.8 on 26 Jan 1950

L 1951 ... 19.5 ... 21 July .................... -1.6 ... 29 Jan ................ -2.6 on 15 Dec 1950

v2 1951 . 19.5 ... 21 July .................... -1.6 ... 29 Jan ................ -2.5 on 15 Dec 1950

L 1952 ... 22.5 ... 01 July .................... -3.7 ... 27 Jan ................ -3.7 on 27 Jan 1952

v2 1952 . 22.5 ... 01 July .................... -3.7 ... 27 Jan ................ -3.7 on 27 Jan 1952

L 1953 ... 22.0 ... 12 Aug .................... -0.9 ... 05 Jan ................ -1.4 on 25 Nov 1952

v2 1953 . 22.0 ... 12 Aug .................... -0.9 ... 05 Jan ................ -1.4 on 25 Nov 1952

L 1954 ... 18.2 ... 01 Sep .................... -5.0 ... 02 Feb ................ -5.0 on 2 Feb 1954

v2 1954 . 18.2 ... 01 Sep .................... -4.9 ... 02 Feb ................ -4.9 on 2 Feb 1954

L 1955 ... 22.1 ... 22 & 23 Aug ............ -3.3 ... 20 Feb ............... -3.3 on 20 Feb 1955

v2 1955 . 22.1 ... 22 & 23 Aug ............ -3.3 ... 20 Feb ............... -3.3 on 20 Feb 1955

L 1956 ... 18.7 ... 08 July & 22 Sep ..... -6.8 ... 01 Feb ............... -6.8 on 1 Feb 1956

v2 1956 . 18.7 ... 08 July & 22 Sep ..... -6.8 ... 01 Feb ............... -6.8 on 1 Feb 1956

L 1957 ... 22.3 ... 06 July ..................... -0.9 ... 16 Dec ............... -0.5 on 23 Nov 1956

v2 1957 . 22.3 ... 06 July ..................... -0.9 ... 16 Dec ........... -0.4 on 23 Nov and 21 Dec 1956

L 1958 ... 20.0 ... 10 Aug .................... -2.8 ... 22 Jan ................ -2.8 on 22 Jan 1958

v2 1958 . 20.0 ... 10 Aug .................... -2.8 ... 22 Jan ................ -2.8 on 22 Jan 1958

L 1959 ... 21.4 ... 20 Aug .................... -3.2 ... 14 & 16 Jan .........-3.2 on 14 & 16 Jan 1959

v2 1959 . 21.3 ... 20 Aug .................... -3.2 ... 16 Jan ..................-3.2 on 16 Jan 1959 (-3.1 14 Jan)

L 1960 ... 20.4 ... 05 June ................... -2.0 ... 14 Jan ................ -2.0 on 14 Jan 1960

v2 1960 . 20.4 ... 05 June ................... -1.9 ... 14 Jan ................ -1.9 on 14 Jan 1960

_______________________________________________

* Dec 15 1928 v2.0 minimum -0.9, Mar 11 1928 CET legacy -1.2, result is different annual minimum date as shown

Edited by Roger J Smith
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Table of annual extreme values continued, 1961 to 2022

note: data now arranged to show ouotcomes in CET legacy (L) and v2.0 (v2).

YEAR .... MAX DAILY MEAN (date) .... MIN DAILY MEAN (date) .... Coldest Daily Mean of Winter
_____________________________________________________________________________

L 1961 ... 21.6 ... 29 Aug .................... -3.5 ... 28 Dec ................ -0.7 on 13 Dec 1960

v2 1961 . 21.6 ... 29 Aug .................... -3.5 ... 28 Dec ................ -0.6 on 13 Dec 1960

L 1962 ... 18.0 ... 09 July .................... -4.9 ... 01 Jan ................ -4.9 on 01 Jan 1962

v2 1962 . 18.0 ... 09 July .................... -4.9 ... 01 Jan ................ -4.9 on 01 Jan 1962

L 1963 ... 19.1 ... 30 July .................... -8.4 ... 23 Jan ................ -8.4 on 23 Jan 1963

v2 1963 . 19.1 ... 30 July .................... -8.4 ... 23 Jan ................ -8.4 on 23 Jan 1963

L 1964 ... 19.4 ... 17 July .................... -2.3 ... 26 Dec ................ -2.3 on 23 Dec 1963

v2 1964 . 19.4 ... 17 July .................... -2.2 ... 26 Dec ................ -2.3 on 23 Dec 1963

L 1965 ... 18.6 ... 12 Aug .................... -3.9 ... 03 Mar ................ -3.9 on 3 Mar 1965

v2 1965 . 18.6 ... 12 Aug .................... -3.8 ... 03 Mar ................ -3.8 on 3 Mar 1965

L 1966 ... 19.5 ... 09 June ................... -4.9 ... 19 Jan ................ -4.9 on 19 Jan 1966

v2 1966 . 19.5 ... 09 June ................... -4.9 ... 19 Jan ................ -4.9 on 19 Jan 1966

L 1967 ... 20.6 ... 17 July .................... -2.2 ... 08 Dec ................ -1.8 on 08 Jan 1967

v2 1967 . 20.6 ... 17 July .................... -2.2 ... 08 Dec ................ -1.8 on 08 Jan 1967

L 1968 ... 21.8 ... 01 July .................... -2.5 ... 10 Jan ................ -2.5 on 10 Jan 1968

v2 1968 . 21.7 ... 01 July .................... -2.4 ... 10 Jan ................ -2.4 on 10 Jan 1968

L 1969 ... 21.4 ... 16 July .................... -3.5 ... 08 Feb ................-3.5 on 8 Feb 1969

v2 1969 . 21.4 ... 16 July .................... -3.5 ... 08 Feb ................-3.5 on 8 Feb 1969

L 1970 ... 21.6 ... 07 July .................... -3.7 ... 07 Jan ................ -3.7 on 7 Jan 1970

v2 1970 . 21.6 ... 07 July .................... -3.6 ... 07 Jan ................ -3.6 on 7 Jan 1970

L 1971 ... 19.9 ... 09 July .................... -3.4 ... 04 Jan ................ -3.4 on 4 Jan 1971

v2 1971 . 19.9 ... 09 July .................... -3.4 ... 04 Jan ................ -3.4 on 4 Jan 1971

L 1972 ... 19.2 ... 18 July .................... -4.5 ... 31 Jan ................ -4.5 on 31 Jan 1972

v2 1972 . 19.2 ... 18 July .................... -4.5 ... 31 Jan ................ -4.5 on 31 Jan 1972

L 1973 ... 20.9 ... 16 Aug .................... -1.7 ... 30 Nov ............... -1.5 on 15 Feb 1973

v2 1973 . 20.9 ... 16 Aug .................... -1.6 ... 30 Nov ............... -1.5 on 15 Feb 1973

L 1974 ... 18.6 ... 15 Aug .................... -1.6 ... 01 Jan ................ -1.7 on 30 Nov 1973

v2 1974 . 18.6 ... 15 Aug .................... -1.6 ... 01 Jan ................ -1.6 on 30 Nov 1973 & 1 Jan 1974

L 1975 ... 23.7 ... 08 Aug ...................... 0.0 ... 14 Dec ............... +1.7 on 09 Feb 1975

v2 1975 . 23.8 ... 08 Aug .....................- 0.2 ... 14 Dec ............... +1.8 on 09 Feb 1975

L 1976 ... 24.7 ... 04 July .................... -2.0 ... 04 Dec ............... -1.2 on 30 Jan 1976

v2 1976 . 24.5 ... 04 July .................... -2.2 ... 04 Dec ............... -1.2 on 30 Jan 1976

L 1977 ... 20.0 ... 05 July .................... -1.8 ... 12 Jan ................ -2.0 on 04 Dec 1976

v2 1977 . 19.9 ... 05 July .................... -1.8 ... 12 Jan ................ -2.2 on 04 Dec 1976

L 1978 ... 19.6 ... 01 June ................... -3.5 ... 31 Dec ............... -3.3 on 11 Feb 1978

v2 1978 . 19.5 ... 01 June ................... -3.7 ... 31 Dec ............... -3.2 on 11 Feb 1978

L 1979 ... 19.5 ... 12 Aug .................... -4.3 ... 28 Jan ................ -4.3 on 28 Jan 1979

v2 1979 . 19.5 ... 12 Aug .................... -4.4 ... 28 Jan ................ -4.4 on 28 Jan 1979

L 1980 ... 20.7 ... 05 June ................... -1.9 ... 14 Jan ............... -1.9 on 14 Jan 1980

v2 1980 . 20.7 ... 05 June ................... -2.0 ... 14 Jan ............... -2.0 on 14 Jan 1980

L 1981 ... 20.1 ... 05 Aug .................... -8.5 ... 12 Dec ................ -0.7 on 14 Feb 1981

v2 1981 . 20.1 ... 05 Aug .................... -8.7 ... 12 Dec ................ -0.7 on 14 Feb 1981

L 1982 ... 21.3 ... 05 June ................... -7.6 ... 14 Jan ................ -8.5 on 12 Dec 1981

v2 1982 . 21.2 ... 05 June ................... -7.5 ... 14 Jan ................ -8.7 on 12 Dec 1981

L 1983 ... 22.7 ... 13 July ..................... -1.5 ... 23 Nov ............... -1.0 on 10 Feb 1983

v2 1983 . 22.6 ... 12 & 13 July ............ -1.6 ... 23 Nov ............... -0.8 on 10 Feb 1983

L 1984 ... 21.6 ... 21 Aug .................... -1.9 ... 15 Feb ............... -1.9 on 15 Feb 1984

v2 1984 . 21.6 ... 21 Aug .................... -1.8 ... 15 Feb ............... -1.8 on 15 Feb 1984

L 1985 ... 20.2 ... 01 Oct ..................... -4.4 ... 17 Jan ................ -4.4 on 17 Jan 1985

v2 1985 . 20.1 ... 01 Oct ..................... -4.4 ... 17 Jan ................ -4.4 on 17 Jan 1985

L 1986 ... 21.9 ... 28 June ................... -4.6 ... 10 Feb ............... -4.6 on 10 Feb 1986

v2 1986 . 21.8 ... 28 June ................... -4.5 ... 10 Feb ............... -4.5 on 10 Feb 1986

L 1987 ... 20.9 ... 20 Aug .................... -7.7 ... 12 Jan ................ -7.7 on 12 Jan 1987

v2 1987 . 20.9 ... 20 Aug .................... -7.7 ... 12 Jan ................ -7.7 on 12 Jan 1987

L 1988 ... 19.3 ... 07 Aug .................... -0.1 ... 22 Nov ................ -0.7 on 10 Dec 1987

v2 1988 . 19.3 ... 07 Aug .................... -0.2 ... 22 Nov ................ -0.9 on 10 Dec 1987

L 1989 ... 23.1 ... 22 July .................... -0.3 ... 26 Nov .................-0.1 on 22 Nov 1988

v2 1989 . 23.0 ... 22 July .................... -0.4 ... 26 Nov .................-0.1 on 22 Nov 1988

L 1990 ... 24.4 ... 03 Aug .................... +0.5 ... 15 Dec ............... -0.3 on 26 Nov 1989

v2 1990 . 24.4 ... 03 Aug .................... +0.3 ... 15 Dec ............... -0.4 on 26 Nov 1989

L 1991 ... 20.6 ... 11 & 29 July ............ -4.7 ... 07 Feb ................ -4.7 on 07 Feb 1991

v2 1991 . 20.4 ... 11 & 29 July ............ -4.6 ... 07 Feb ................ -4.6 on 07 Feb 1991

L 1992 ... 20.4 ... 29 June ................... -2.3 ... 22 Jan ................ -3.5 on 12 Dec 1991

v2 1992 . 20.4 ... 29 June ................... -2.7 ... 22 Jan ................ -3.7 on 12 Dec 1991

L 1993 ... 19.4 ... 10 June .................. -2.9 ... 23 Nov ................ -2.4 on 29 Dec 1992

v2 1993 . 19.3 ... 10 June .................. -3.0 ... 23 Nov ................ -2.6 on 29 Dec 1992

L 1994 ... 20.6 ... 24 July .................... -1.9 ... 14 Feb ................ -2.9 on 23 Nov 1993

v2 1994 . 20.5 ... 24 July .................... -1.9 ... 14 Feb ................ -3.0 on 23 Nov 1993

L 1995 ... 24.9 ... 01 Aug .................... -4.7 ... 28 Dec ................ -1.2 on 3 Jan 1995

v2 1995 . 24.8 ... 01 Aug .................... -4.8 ... 28 Dec ................ -1.3 on 23 Dec 1994**

L 1996 ... 22.1 ... 19 Aug .................... -2.2 ... 07 Feb ................ -4.7 on 28 Dec 1995

v2 1996 . 22.2 ... 19 Aug .................. -2.1 ... 07 Feb & 31 Dec ...-4.8 on 28 Dec 1995

L 1997 ... 22.6 ... 11 Aug .................... -2.6 ... 01 Jan ................ -2.6 on 01 Jan 1997

v2 1997 . 22.6 ... 10 & 11 Aug ........... -2.7 ... 01 Jan ................ -2.7 on 01 Jan 1997

L 1998 ... 20.5 ... 11 Aug .................... -0.3 ... 06 Dec ............... +0.2 on 01 Feb 1998

v2 1998 . 20.5 ... 11 Aug .................... -0.5 ... 06 Dec ............... +0.2 on 01 Feb 1998

L 1999 ... 21.7 ... 31 July .................... -2.2 ... 20 Dec ................-0.3 on 06 Dec 1998

v2 1999 . 21.6 ... 31 July .................... -2.3 ... 20 Dec ................-0.5 on 06 Dec 1998

L 2000 ... 21.5 ... 19 June .................. -1.9 ... 29 Dec ................ -2.2 on 20 Dec 1999

v2 2000 . 21.3 ... 19 June .................. -4.0 ... 29 Dec ................ -2.3 on 20 Dec 1999

L 2001 ... 23.0 ... 29 July .................... -1.2 ... 16 Jan ................ -1.9 on 29 Dec 2000

v2 2001 . 22.9 ... 29 July .................... -1.2 ... 16 Jan ................ -4.0 on 29 Dec 2000

L 2002 ... 21.6 ... 29 July .................... -1.8 ... 01 & 02 Jan ........ -1.8 on 1 & 2 Jan 2002

v2 2002 . 21.4 ... 29 July .................... -1.8 ... 01 Jan ................. -1.8 on 1 Jan 2002 (2 Jan -1.6)

L 2003 ... 23.9 ... 09 Aug .................... -1.4 ... 07 Jan ................ -1.4 on 07 Jan 2003

v2 2003 . 23.9 ... 09 Aug .................... -1.4 ... 07 Jan ................ -1.4 on 07 Jan 2003

L 2004 ... 21.7 ... 08 Aug ................ +0.5 ... 29 Jan & 20 Dec.... +0.5 on 30 Dec 2003 & 29 Jan 2004

v2 2004 . 21.7 ... 08 Aug .................... +0.2 ... 20 Dec ............... +0.4 on 30 Dec 2003 & 29 Jan 2004

L 2005 ... 22.1 ... 19 June .................. -1.0 ... 29 Dec ................ +0.4 on 23 Feb 2005

v2 2005 . 23.2 ... 19 June .................. -1.1 ... 28 Dec ................ +0.2 on 20 Dec 2004 (23 Feb 2005 +0.3)

L 2006 ... 24.5 ... 19 July .................... -1.4 ... 02 Feb ................ -1.4 on 2 Feb 2006

v2 2006 . 24.6 ... 19 July .................... -1.2 ... 02 Feb ................ -1.2 on 2 Feb 2006

L 2007 ... 19.7 ... 05 Aug .................... -1.5 ... 07 & 08 Feb ....... -1.5 on 7 & 8 Feb 2007

v2 2007 . 19.8 ... 05 Aug .................... -1.3 ... 08 Feb ................ -1.3 on 8 Feb 2007 (7 Feb -1.2)

L 2008 ... 21.1 ... 28 July .................... -2.5 ... 31 Dec ................ -0.5 on 21 Dec 2007

v2 2008 . 21.2 ... 28 July .................... -2.5 ... 31 Dec ................ -0.5 on 21 Dec 2007

L 2009 ... 22.5 ... 01 July .................... -3.0 ... 06 Jan .................-3.0 on 6 Jan 2009

v2 2009 . 22.6 ... 01 July .................... -2.9 ... 06 Jan .................-2.9 on 6 Jan 2009

L 2010 ... 19.9 ... 10 July .................... -7.0 ... 20 Dec ................ -4.6 on 7 Jan 2010

v2 2010 . 20.0 ... 10 July .................... -7.0 ... 20 Dec ................ -4.5 on 7 Jan 2010

L 2011 ... 22.0 ... 27 June ................... -1.4 ... 29 Jan ................ -7.0 on 20 Dec 2010

v2 2011 . 21.9 ... 27 June ................... -1.3 ... 29 Jan ................ -7.0 on 20 Dec 2010

L 2012 ... 20.3 ... 18 Aug .................... -3.0 ... 04 Feb ............... -3.0 on 4 Feb 2012

v2 2012 . 20.4 ... 18 Aug .................... -2.8 ... 04 Feb ............... -2.8 on 4 Feb 2012

L 2013 ... 22.7 ... 01 Aug .................... -2.9 ... 16 Jan ................ -2.9 on 16 Jan 2013

v2 2013 . 22.8 ... 01 Aug .................... -2.8 ... 16 Jan ................ -2.8 on 16 Jan 2013

L 2014 ... 21.0 ... 18 July .................... +0.8 ... 29 Dec ............... +2.5 on 23 Nov 2013 *

v2 2014 . 21.1 ... 18 July .................... +0.8 ... 29 Dec ............... +2.5 on 23 Nov 2013 *

L 2015 ... 24.6 ... 01 July ..................... -0.3 ... 2 Feb .................. -0.3 on 2 Feb 2015

v2 2015 . 24.7 ... 01 July ..................... -0.1 ... 2 Feb .................. -0.1 on 2 Feb 2015

L 2016 ... 23.5 ... 20 July ..................... +0.3 .. 16 Jan ................ +0.3 on 16 Jan 2016

v2 2016 . 23.6 ... 20 July ..................... +0.4 .. 16 Jan ................ +0.4 on 16 Jan 2016

L 2017 ... 21.9 ... 19 June ....................--0.4 ... 12 Dec ............... --0.1 on 26 Jan 2017

v2 2017 . 21.8 ... 19 June ....................--0.4 ... 12 Dec ............... --0.1 on 26 Jan 2017

L 2018 ... 22.5 ... 27 July ..................... --3.8 ... 1 Mar .................--3.8 on 1 Mar 2018

v2 2018 . 22.7 ... 27 July ..................... --3.7 ... 1 Mar .................--3.7 on 1 Mar 2018

L 2019 ... 25.2 ... 25 July ..................... --1.8 ... 31 Jan ................--1.8 on 31 Jan 2019

v2 2019 . 25.3 ... 25 July ..................... --1.8 ... 31 Jan ................--1.8 on 31 Jan 2019

L 2020 ... 25.1 ... 12 Aug ......................--1.3 ... 31 Dec .................+1.5 on 2 Dec 2019

v2 2020 . 25.2 ... 12 Aug ......................--1.3 ... 31 Dec .................+1.4 on 2 Dec 2019

L 2021 ... 22.2 ... 22 July ...................... -2.1 ... 11 Feb ................. -2.1 on 11 Feb 2021

v2 2021 . 22.3 ... 22 July ...................... -2.0 ... 11 Feb .................. -2.0 on 11 Feb 2021

L 2022 ... (series ended 30 Apr) ......... +1.2 ... 21 Jan (end series) ..+0.3 on 28 Nov 2021

v2 2022 . 28.1 ... 19 July ...................... -4.4 ... 15 Dec (to date) .... +0.3 on 28 Nov 2021

v2 2023 . 23.3... 7 Sep (to date) ......... tbd ..................................... -4.4 on 15 Dec 2022

_______________________________________________________________

* highest such value in the entire record, previously +1.7 (1974-1975) _ CET legacy.

* same as above, but +1.8 (1974-1975) _ CET v2.0 

... the annual minimum of +0.8 was not as mild as +0.9 in 1863 (both series). 

 

** CET legacy min 23 Dec 1994 was -1.1, CET v2.0 min 3 Jan 1995 was -1.2, result is different date for winter 1994-95 minimum

 

Edited by Roger J Smith
posted new preliminary 2023 max 23.3 7 Sep
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Summary of the Annual extremes (see last four posts for tables)

Highest Daily Mean for each of 251 years 1772 to 2023

The range of dates is 15 May (1833, tied) to 01 October (1985).

The count by month (assigning 0.5 to tied values in different months) is

Month _ count (number) Legacy CET ___ v2.0 CET

MAY .... 3.5 (4) _____________________ 3.5 (4)

JUN .... 47.0 (48) ___________________49.5 (50)

JUL*... 111.5 (114) _________________110.0 (114)

AUG ... 76.0 (77) ___________________ 75.0 (78)

SEP*.... 13.0 (14) ___________________13.0 (14)

OCT .... 1.0 (1) _______________________ 1.0 (1)

* CET legacy 2022 assigned to July and 2023 to Sep although series terminated.

After 2023, CET legacy will continue to change in this table using v2.0 and will add to same total (now 253).

The number in brackets gives the number of years in which the month at least shares in the category of highest daily mean. For example, August had two cases of dates tied with other months, so the count was 76.0, the number of cases was 77 (in CET legacy). A case where a month has more than one day does not affect this, there were about half a dozen such cases, usually consecutive days or nearby days in a warm spell. One year actually had three days tied, all in July. The v2.0 dates are mostly the same as CET legacy but there were about ten changes that affected month counts, some of them new ties. There were some balancing transfers and May, Sept and Oct were not involved in any of the changes.

Despite July coming ahead of August in these counts, the highest frequency on any one date is 9 on the 12th of August. Other dates that scored five or more include 5 June (5), 5 July (7), 9, 12, 16, 17 July (all made it to five with one tie included), 20. 22, 24 and 29 July (all at 6 except 22nd now at 7) , and 5 Aug (5). There seems to be a little flicker of warmth near the end of September into the first of October given that one case fell in the period 15-26 September, then three from 27 Sep to 1 Oct. These counts are all from the CET legacy set. 

Periods with very few annual extremes within the summer months include 11-14 June (zero) and from 21 to 26 August which totalled 5.0 including two ties. The frequency after that period is not much greater but given the seasonal distribution that part of August stands out a bit. There are ten cases between 27 August and 2 September.

The long-term average of the warmest day is 21.0 while the average since 1901 is 21.3 ... in the warmer period 1975 to 2006 the average was 21.9. The average for the past eight years (2015 to 2022) is 24.2 (v2.0) ... the last time four consecutive years all exceeded 21.8 was 1947 to 1950 (when 22.5 was the lowest maximum).

The highest extremes are probably a lot better known to weather "buffs" than the lowest annual max values, so I had a look at those. 1860 and 1862 stand out with 17.2 and 17.3 the best those years could manage. A more recent period of cool summers appears 1962-66, five years when the value 20.0 was never achieved (CET legacy data used for this, similar in v2.0).

 

__Annual Minimum Daily Means 1772-2023 and coldest of winter seasons__

Note that 1786 could have had a coldest annual value in December, the data are missing, but it is not as likely as the winter seasonal minimum for 1786-87 which I have assigned to December on probability (see the table for that period for details). Later edit _ Dec 1786 data have been added to CET v2.0 and that month did provide the winter's lowest daily mean.

Not every annual minimum is a winter minimum, but there are two cases where a year managed to secure two different coldest of winter from tied values at either end of the year. There are numerous cases where a year claims two winters, as well as those where it claims neither of its two potential winter coldest readings.

The following count for coldest mean daily per year follow the same logic as the max, the number includes 0.5 for ties in different months, and the number in brackets gives the number of times the month at least had a share.

The frequency data now include 2022. The lowest daily mean was in December after legacy terminated, and was also assigned to CET legacy count. 2023 is not in table yet. 

Month _ count (number) Legacy CET ___ v2.0 CET

NOV ..... 13.5 (14) __________________ 14.0 (14)

DEC ...... 76.5 (78)*__________________ 75.5 (77)

JAN ..... 105.5 (108) ________________ 105.5 (107)

FEB ....... 50.0 (51) ___________________ 50.0 (52)

MAR ....... 5.5 (6) _____________________ 6.0 (6)

includes 2022 after legacy terminated.

(This discussion is based on the legacy data, slight changes would perhaps occur if the v2.0 data were analyzed from a similar perspective) ... the counts above look very similar but about twenty years saw changes from legacy to v2.0, many of them cancelled out eventually.

Despite the fact that January and February CET means are often very close in 30-year periods and not that different (3, 4) over a longer term, January and even December score higher than February on this index. A small part of the reason is length of month, February has only 90% of the time available, but probably the bigger reason is solar angle, a cold February day can achieve a somewhat higher maximum.

The most frequent date for the annual minimum is 1 Jan (count 8.0, 9 instances, so twice this date tied both times with 2 Jan). 28 December had a count of 7.5 with 8 instances. 22 December scored six while 23 January scored five and otherwise the count remains fairly even at about 2-4 per day through the heart of the winter season which appears to be 15 Dec to 15 Feb.

In the heart of the winter season, the dates that did least well at scoring a coldest of year include 3 and 5 Feb around the time when the annual temperature curve shows a bit of a spike.

The range of dates is 9 Nov (1921) to 21 March 1872 (later tied on 11 Dec).

The average of this annual minimum over the entire 250-year period is -3.6, and this has risen to reach -2.9 since 1901. From 1988 to 2007 a two-decade mean of -1.6 was observed, but that fell back to -2.0 for the twenty-five years 1988-2012. For a ten-year period 1795 to 1804, the average was as low as -6.0 ... and this appears to be about the same value that other colder periods have had, although most of those did not last ten years, for example, 1890-95 (six years) managed an average of -6.3. The ten-year average of -4.6 from 1978 to 1987 was not often bettered in the colder 19th century or late 18th century.

Meanwhile, the winter seasonal count looks very similar, although about one-third of winter seasonal minimum values are not annual minima for their particular year. The various possibilities seem to cancel out almost equally, but February does score a bit higher.

Unlike the count for years, this count does include winter 2021-22 which had data in CET legacy. The data now include winter 2022-23 with December assigned to CET legacy total (252 winters now set). 

Month _ count (number) Legacy CET ___ v2.0 CET

NOV ... 15.5 (16) ____________________ 15.0 (16)

DEC ... 71.0 (72) _____________________ 73.5 (75)

JAN ....101.0 (104) ____________________98.0 (99)

FEB ... 55.0 (56) ______________________ 56.5 (58)

MAR ... 9.5 (10) _______________________ 9.0 (9)

 

The range in this variable runs from 12 Nov 1919 (for winter 1919-20) to 21 March 1899 (coldest of winter 1898-99). These dates apply in both legacy and v2.0 CET.

Since quite a few years use up two cold annual values in the seasonal count, the long-term mean of this index is higher, at -3.5, and has risen to -2.9 since 1901. The recent winter season values are more similar to the annual values.

The coldest annual minimum which was not also its own winter minimum is -7.6 for (Jan) 1982, followed by -6.6 for (Jan) 1785. One of two tied values in 1784 (-6.7 in January) was not coldest of its winter but the other tied value (Dec 1784) was. 

Edited by Roger J Smith
update for winter 2022-23
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Greatest Changes in mean daily C.E.T. (from day to day)

note: this list was compiled from CET legacy data. I have inserted the v2.0 values and will search the v2.0 data for any new entries required. Any data from 1772 to 1852 is unchanged from legacy to v2.0

I ran a program on the daily CET values to find out the largest changes from one day to the next, over the period 1772-present.

There were three days that warmed by more than 10 C deg, they were:

Feb 7, 1830 ... 11.2 warmer (4.8 from -6.4) _ same data v2.0

Jan 4, 1836 ... 10.7 warmer (8.2 from -2.5) _ same data v2.0

Jan 21, 1838 ... 10.5 warmer (-1.4 from coldest day on record -11.9) _ same data v2.0

These cover the largest increases for Jan and Feb. The rest of the monthly records are as follows:

Mar. 12, 1805 ... 8.2 warmer (11.5 from 3.3) _ same data v2.0

Apr. 15, 1868 ... 7.4 warmer (12.9 from 5.5) _ (7.3 warmer, 12.8 from 5.5 in v2.0)

May 17, 1854 ... 7.1 warmer (13.1 from 6.0) _ (6.9 warmer, 13.0 from 6.1 in v2.0)

June 1, 1869 ... 6.9 warmer (14.4 from 7.5) _ (6.8 warmer, 14.4 from 7.6 in v2.0)

July 9, 1903 ... 6.9 warmer (20.2 from 13.3) _ (6.3 warmer, 19.4 from 13.1 in v2.0)

Aug. 27, 1864 ... 6.2 warmer (15.0 from 8.8 ) _ same data v2.0

Sep. 4, 1869 ... 7.4 warmer (18.5 from 11.1) _ (7.1 warmer, 18.4 from 11.3 in v2.0)

Oct. 21, 1833 ... 7.0 warmer (12.9 from 5.9) _ same data v2,0

Nov. 26, 1797 ... 9.6 warmer (9.8 from 0.2) _ same data v2.0

Dec. 8, 1847 ... 8.9 warmer (10.7 from 1.8 ) _ same data v2.0

-------------------

Meanwhile, the largest day to day falls in CET daily means were all less than 10 degrees, the largest was 9.9 degrees in November 1836.

Monthly records are ...

Jan. 6, 1982 ... 8.5 (-0.1 from 8.4) _ (8.4 colder, 0.0 from 8.4 in v2.0)

Feb. 26, 1780 ... 8.0 (-2.4 from 5.6) _ same data v2.0

Mar. 5, 1821 ... 8.5 (0.7 from 9.2) _ same data v2.0

Mar. 28, 1777 ... 8.5 (6.3 from 14.8 ) _ same data v2.0

Apr. 16, 1779 ... 8.5 (7.3 from 15.8 ) _ same data v2.0

May 11, 1773 ... 9.1 (4.1 from 13.2) _ same data v2.0

June 7, 1942 ... 8.3 (12.8 from 21.1) _ same data v2.0

Jul. 23, 1868 ... 8.5 (14.7 from 23.2) _ (8.3 colder, 14.8 from 23.1 in v2.0)

_ tied value in v2.0 (no legacy data) _ 8.3 colder, 19.8 from 28.1, July 19-20 2022

Aug. 29, 1838 ... 7.2 (11.5 from 18.7) _ same data v2.0

Sep. 16, 1819 ... 8.6 (8.9 from 17.5) _ same data v2.0

Oct. 16, 1955 ... 9.3 (3.7 from 13.0) _ same data v2.0

Nov. 25, 1836 ... 9.9 (0.4 from 10.3) _ same data v2.0

Dec. 14, 1994 ... 8.9 (2.4 from 11.3) _ (8.9 colder, 2.2 from 11.1)

----------------------------------------------------

Note that the majority of these monthly records were set before 1870 and only a few have occurred recently, and in the lifetime of most people reading this, no day has warmed more than 7 degrees (by mean CET), the largest increase since 1980 is 5.8 deg from 30 Nov. 1985, while there was a 6.4 deg rise on 6 Jan 1971. More recently the largest rise was 4.9 deg to set a new monthly record for March on the 29th of 2017 (15.1 from 10.2 the previous day). That was the largest rise since a jump of 5.4 deg from 25 to 26 Jan 2013. 

There were several rather large decreases in that past year or so.

17 Mar 2018 (0.7) was 8.2 deg colder than 16 Mar (8.9) not quite reaching the monthly extreme of 8.5 deg set in 1821.

... the v2.0 data were also 8.2 deg colder, 0.8 from 9.0.

14 Oct 2018 (11.1) was 7.4 deg colder than 13 Oct (record high 18.5). 

... the v2.0 data were also 7.4 deg colder, 11.0 from 18.4

Before those, 8 Dec 2017 (1.9) was 7.1 deg colder than 7 Dec (9.0).

... the v2.0 data were 7.2 colder, 1.8 from 9.0. 

Edited by Roger J Smith
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  • Location: Rossland BC Canada
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Longest Cold Spells

(consecutive days with means 0.0 or lower)

NOTE -- Data from 1772 to present, there were probably very long cold spells in years such as 1684, 1709 and 1740 but we don't have the daily details for those.

Tied durations are ranked in order of average CET (not extreme cold value).

This table includes all cases with 10 or more such days. Two significant nine day spells are added (Feb 1929, Nov-Dec 2010)

(the table was first constructed using CET legacy data. Entries after 1852 have v2.0 data that may be slightly different. Notes have been added to show any significant changes that v2.0 data might make to this table). Ranks are determined by v2.0 not CET legacy. Table is redesigned to make v2.0 primary data source.

 

Days _ Duration of Days 0.0 or lower ________________ Coldest ____ Average

_____________________________________________________________

32 ... ... 27 Dec 1813 - 27 Jan 1814 ...................................... -- 6.7 ...... -- 3.2

26 ... ... 7 Jan - 1 Feb 1776 .....................................................-- 7.5 ...... -- 3.0

23 (18) ... ... 9 - 31 Dec 1890 ................................................. -- 5.7 ...... -- 1.9

... CET legacy was 9-26 Dec (18d) avg -2.1, coldest -6.8, v2.0 has a longer duration as 27th -0.2 allows 27th-31st to be added.

... extended to 12 Jan 1891 (35d) warmest is only +1.9 (4 Jan) and average of 1-12 Jan is -1.2, extreme -3.5 on 7 Jan 1891.

22 ... ... 5 - 26 Feb 1947 ......................................................... -- 6.6 ...... -- 2.4 *****

... CET legacy same duration as above, extreme -6.7, avg -2.5

20 ... ... 7 - 26 Jan 1963 .......................................................... --8.4 ...... -- 3.4 ****

... CET legacy has same duration as above, also -8.4 extreme, avg -3.6

19 ... ... 8 - 26 Jan 1881 ......................................................... -- 8.0 ...... -- 4.7

... CET legacy has 8-27 Jan 1881 (v2.0 27th +0.1)  extreme -8.1, avg -4.6 (19d) ... v2.0 avg -4.5 for same 20d as legacy

18 ... ... 6 - 23 Feb 1855 .......................................................... -- 7.2 ...... -- 3.7

... CET legacy has same duration as above, -7.5 extreme, -3.7 avg

18 ... ... 9 - 26 Jan 1823 ........................................................... -- 8.9 ...... -- 3.0

17 ... ... 10 - 26 Jan 1795 ......................................................... -- 8.9 ...... -- 4.0

15 ... ... 21 Dec 1870 - 4 Jan 1871 ........................................... -- 6.7 ...... -- 3.5

... CET legacy has same duration as above, -6.9 extreme, avg -3.6

15... ... 10-24 Jan 1940 ............................................................. -- 7.0 ...... -- 3.4

... CET legacy has same duration as above, -7.1 extreme, avg -3.3

15 ... ... 24 Dec 1892 - 7 Jan 1893 ........................................... -- 4.9 ...... -- 3.1

... CET legacy has same duration as above, -5.0 extreme, avg -3.3

15 ... ... 18 Jan - 1 Feb 1784 ..................................................... -- 3.7 ...... -- 2.1

... cold to 20 Feb 1784, average 2-20 Feb was -0.3, extreme of -6.7 on 12 Feb, warmest value +3.5 on 5 Feb

14 ... ... 8 - 21 Jan 1838 ........................................................... -- 11.9 ...... -- 5.1

14 ... ... 5-18 Feb 1895 .............................................................. -- 8.5 ...... -- 4.8**

... CET legacy has same duration as above, -8.3 extreme, avg -4.8

14 ... ... 3-16 Jan 1820 .............................................................. -- 8.5 ...... -- 3.6

14 ... ... 21 Jan - 3 Feb 1780 ..................................................... -- 3.6 ...... -- 1.0

... also cold 8-15 Jan 1780, 8d average -4.0, extreme -6.1 (13 Jan) ... intervening 5d 16-20 Jan avg 2.4 C. ... 27d avg was -1.3 C

13 ... ... 26 Jan - 7 Feb 1954 ..................................................... -- 4.9 ...... -- 2.6

... CET legacy has same duration as above, -5.0 extreme, avg -2.5

13 ... ... 17 - 29 Dec 1860 .......................................................... -- 4.0 ...... -- 2.3^

... CET legacy has same duration as above, -3.7 extreme, avg -2.1

13 ... ... 14 - 26 Feb 1956 ........................................................... -- 3.2 ...... -- 1.5

... CET legacy has same duration as above, -3.2 extreme, avg -1.6

13 ... ... 6 - 18 Feb 1986 ............................................................ -- 4.5 ...... -- 1.4 ***

... CET legacy has same duration as above, -4.6 extreme, avg -1.6

13 ... ... 29 Dec - 10 Jan 1811 .................................................... -- 3.6 ...... -- 1.5

12 ...... 8-19 Jan 1987 ................................................................ -- 7.7 ...... -- 2.8

... CET legacy has same duration as above, -7.7 extreme, -2.6 avg

12 ... ... 23 Dec 1962 - 3 Jan 1963 ............................................ -- 3.6 ...... -- 2.2 ****

... CET legacy has same duration as above, also -3.6 extreme, -2.2 avg

12 ... ... 18 - 29 Jan 1880 ........................................................... -- 4.4 ...... -- 2.0

... CET legacy has same duration as above, -4.3 extreme, avg -2.1

12 ... ... 3 - 14 Feb 1991 ............................................................ -- 4.6 ...... -- 1.8

... CET legacy has same duration as above, -4.7 extreme, avg -1.9

12 ... ... 25 Dec 1853 - 5 Jan 1854 ............................................ -- 4.9 ...... -- 1.8

... CET legacy has same duration as above, -5.0 extreme, avg -1.8

12 ... ... 30 Nov - 11 Dec 1796 .................................................. -- 4.7 ...... -- 1.8

11 ...... 17 - 27 Dec 2010 ........................................................... -- 7.0 ...... -- 3.9

... CET legacy has same duration as above, also -7.0 extreme, avg -3.9

12 ...... 17 - 28 Feb 1955 ........................................................... -- 3.3 ...... -- 1.7

... CET legacy has same duration as above, also -3.3 extreme, avg -1.7

11 ...... 11 - 21 Jan 1867 ............................................................. -- 4.9 ...... -- 2.8

... CET legacy has same duration as above, -5.0 extreme, avg -2.9

11 ... ... 1 - 11 Feb 1917 .............................................................. -- 6.2 ...... -- 2.8 *

... CET legacy has same duration as above, -7.2 extreme, avg -2.8

11 ... ... 9 - 19 Feb 1985 ............................................................. -- 4.0 ...... -- 2.6

... CET legacy has same duration as above, -4.1 extreme, avg -2.7

11 ... ... 2-12 Jan 1879 ................................................................ -- 5.7 ...... -- 2.5

... CET legacy has same duration as above, -4.8 extreme, avg -2.3

11 ... ... 6 - 16 Jan 1850 .............................................................. -- 2.8 ...... -- 1.4

11 ... ... 25 Dec 1820 - 4 Jan 1821 ............................................. -- 3.3 ...... -- 1.3

... ... extends to 5 Jan 1821 if we count +0.1 on 5 Jan, would be avg -1.2 for 12d if so.

11 ... ... 11 - 21 Feb 1853 ............................................................ -- 3.1 ...... -- 1.2

... CET legacy has same duration as above, -3.2 extreme, avg -1.2

11 ... ... 9 - 19 Feb 1940 .............................................................. --2.6 ....... --1.1

... CET legacy has same duration as above, -2.5 extreme, avg -1.1

10 ...... 6-15 Jan 1982 ................................................................. --7.5 ...... -- 3.9

... CET legacy has same duration as above, -7.6 extreme, avg -4.0

10 ... ... 8 - 17 Jan 1826 ...............................................................-- 6.9..... -- 3.7

10 ... ... 20 - 29 Jan 1945 ............................................................ -- 7.5 ...... -- 3.4

... CET legacy has same duration as above, -7.6 extreme, avg -3.5

10 ... ... 8 - 17 Dec 1878 .............................................................. -- 5.5 ...... -- 2.8^^

... CET legacy has same duration as above, -5.3 extreme, avg -2.9

10 ... ... 30 Nov - 9 Dec 1879 ....................................................... -5.3 ...... -2.8

... CET legacy has nine subzero days 30 Nov - 8 Dec, 9 Dec is +0.1, avg of ten days -3.0, extreme -5.7 ... very cold to 13 Dec (14d avg -2.0/-2.2 leg)

10 ... ... 16 - 25 Jan 1829 ............................................................. -- 4.8 ...... -- 2.8

10 ... ... 5 - 14 Dec 1844 ..............................................................-- 5.5 ...... -- 2.7

10 ... ... 14 - 23 Jan 1809 ............................................................. -- 5.1 ...... -- 2.4

10 ... ... 8 - 17 Dec 2022 .............................................................. --4.4 ........ --1.9

10 ... ... 23 Dec 1829 - 1 Jan 1830 ................................................ -2.7 ....... --1.4

10 ... ... 24 Dec 1836 - 2 Jan 1837 .............................................. -- 3.3 ...... -- 1.3

10 ... ... 21 - 30 Jan 1917 ............................................................. -- 2.0 ...... -- 1.2 *

... v2.0 same duration as above, -1.8 extreme, avg -1.1

(09) .... 11-19 Feb 1929 ............................................................... --8.0 ...... -4.6

... v2.0 same duration as above, -7.4 extreme, avg -4.6

(this interval failed to reach 10d because 20th was 0.3 (0.8 CET legacy), 10d avg is -4.2 in both)

(09) ... 26 Nov - 4 Dec 2010 ......................................................... -4.0 ..... -1.9

... v2.0 same duration as above, -4.0 extreme, avg -1.9

(this interval had 0.2 on 25th Nov, 0.3 on 5th Dec, then -3.8, -3.5, -2.7 6th-8th Dec, which was a 14d interval that had an average of -1.8 ... all same for CET legacy except 0.3 on 25th Nov and 0.4 on 5th Dec.)

__________________________________________________

^ Most of the period 1-16 Jan 1861 was also subzero, the 31-day period 17 Dec 1860 to 16 Jan 1861 averaged -1.5 C (CET legacy -1.3).

^^ This cold spell extended from 7 to 26 Dec, 20 days in which the mean CET was --2.4 C. The interval 20-25 Dec was --3.9 C. (CET leg -3.7 C)

* Except for +0.2 on 31 Jan 1917, a 22 day spell avg --1.8 C lasting 21 Jan to 11 Feb. (similar in CET legacy, 31st Jan +0.3)

** A longer spell of 24 days with +0.3 as warmest, 26 Jan - 18 Feb 1895, avg --3.7 C ... (CET legacy same info but +0.4 warmest)

*** A longer spell of 27 days with +0.5 as warmest,  5 Feb - 3 Mar 1986, avg -1.2 C ... (CET legacy +0.4 warmest, avg -1.4 C)

**** Although there were only two spells in winter 1962-63 that qualified for this list, note that the period of 35 days that includes the two, 23 Dec to 26 Jan, averaged -2.7 C and 70 days to 2 March averaged -- 1.5 C.

***** The 45-day period 23 Jan to 8 Mar 1947 averaged --1.9 C.

see also note below Dec 1890 in table, 35d cold spell extended into early Jan 1891. An even longer extension to 20 Jan 1891 (43d) maintains similar average  (-0.9) and provides new extreme for extended period of -6.2 on 18 Jan 1891. A further extension back to 26 Nov 1890 provides another 13 days (56d total) with the average for the additional days +0.9 C, and for the entire 56 days, -1.1 C.

<<>> RECENT NEAR MISSES & EXPANSION OF 1986 FROM LIST <<>>

25 Nov to 4 Dec 2010 averaged -- 1.7 C and 25 Nov to 8 Dec averaged -- 1.7 C but these periods failed by a slight margin to make the list (25 Nov was +0.2 (+0.3 CET legacy) and 5 Dec was +0.3 (+0.4 legacy)).

The 15-day period from 5 to 19 Jan 1985 averaged --1.7 C. (11th not subzero so it has no ten-day interval) (same in CET legacy)

1 to 10 Jan 2010 averaged --1.8 C but failed to make the list because 2 Jan was +0.4 C.

 ... in CET legacy this would be -1.9 C, and +0.3 C

16 to 25 Jan 2013 averaged --0.8 C (-0.9 CET legacy) but failed to make the list because 24 Jan was +0.7 C (both).

8-26 Dec 1981 averaged -- 2.5 C. (in CET legacy the average is -2.3 C) ... 16 Dec (+0.6) and 21 Dec (+0.4) broke up subzero intervals.

<<< Older near miss cold spells failing to produce ten consecutive subzero days >>>

14d __ 24 Dec 1785 - 6 Jan 1786 ... average -2.0, extreme -7.6 ... +2.1 on 28 Dec, longest subzero 7d (29 Dec - 4 Jan)

18d __ 22 Feb - 10 Mar 1786 ... average -1.1, extreme -4.7 ... warmest +0.4 (25 Feb), longest subzero 7d (3-9 mar)

13d __ 11-23 Dec 1788 ... average -1.5, extreme -5.7 ... 12-20 Dec all subzero, 11 Dec +1.3 and 21 Dec +1.9

 8d __ 21 - 28 Dec 1796 ... average -3.1, extreme -10.8 ... included Dec's coldest day (25 Dec)

15d __ 24 Dec 1798 - 7 Jan 1799 ... average -1.5, extreme -8.4 ... 30 Dec +0.5 (longest subzero 8d 31 Dec to 7 Jan)

 5d ___ notable 5d cold spell 30 Mar to 3 Apr 1799, avg -0.1 C 

11d __ 18 - 28 Dec 1808 ___ average -1.5, extreme -3.8 ... 9d subzero 18-26 Dec, 27 Dec +0.9, 28 Dec +0.2

10d __ 7-16 Dec 1812 ___ average -1.7, extreme -4.4 ... +0.4 on 11 Dec prevented 10d qualifier

16d __ 4-19 Mar 1814 ___ average 0.0, extreme -1.0 ... notable late season stretch of -1 to +1 days. also 20-27 Feb all subzero avg -1.6 extreme -2.8

 8d __ 7-14 Feb 1816 ___ average -2.7, extreme -8.8 ... no really cold extensions possible but February's coldest day included (9 Feb)

10d __ 7-16 Dec 1819 ___ average -2.0, extreme -6.0 ... +0.3 7 Dec and +0.7 15 Dec prevented 10d qualifier ... later interval did qualify 3-16 Jan 1820

(24d) _ 24 Dec 1819 - 16 Jan 1820 ... 3-16 Jan qualified as 14d, but 9d 24 Dec - 1 Jan also averaged -2.4, 1 Jan 1820 -5.9 (2 Jan +1.4)

... note it was very mild between Dec 1819 cold spells, 18-22 Dec near 9 C.

24d __ 2 - 25 Feb 1827 __ average -0.2 C __ extreme -3.7 __ a long spell with a lot of days close to zero, coldest 16-20 Feb.

16d __ 8 - 23 Jan 1830 __ average -1.1 C __ extreme -5.2 __ nine subzero days 12-20 Jan, +0.2 11 Jan prevented a 10d qualifying interval.

10d __ 18-27 Mar 1837 __ average 0.5 C __ extreme -0.9 __ 20-24 Mar all subzero and average -0.5, very cold for so late in season, 5-14 Apr avg 2.4 C

10d __ 10-19 Feb 1838 __ average -1.6 C __ extreme -4.2 __ +0.6 on 18 Feb prevented a qualifying ten day subzero (8d 10-17 Feb). Below 1.0 20-22 Feb.

13d __ 3-15 Jan 1841 ___ average -1.6 C ___ extreme -9.2 (8 Jan) __ 7d 3-9 Jan avg -4.0, not as extreme 10-15 Jan but all six between 0.2 and 1.7 C.

10d __ 11-20 Dec 1859 __ average -3.1 C __ extreme -7.5 (17 Dec) (CET legacy avg -3.2, extreme -7.7) __ 1.9 12 Dec, 7d subzero interval 13-19 Dec, 20 Dec 1.0

18d __ 14-31 Dec 1874 __ average -2.0 C ___ extreme -5.4 (22 Dec) (CET legacy avg -2.1 C, extreme -5.5 C) _ 0.2 (19 Dec) and 0.5 (24 Dec) only days > 0.0

22d __ 7-28 Mar 1883 ___ average 0.7 C ___ extreme -2.1 (10 Mar) (CET legacy avg 0.7 C, extreme -2.4 C) _ unusually long duration of wintry cold in Mar.

22d __ 24 Feb - 17 Mar 1886 __ average 0.1 __ extreme -2.6 (CET legacy avg 0.0, extreme -2.4) _ warmest day only 0.7, >10 C nearly every day after 20 Mar

___________________________________

honorable mention should be given to 11-20 March 1845, there were two days in that 10-day interval slightly above zero but the average so late in the season was --1.7 C and contains the coldest March day (-6.5 on 13th). Also, in terms of a sustained cold anomaly, 21 March to 1st April 2013 (12 days) had a mean of +1.2 C. 1785 was even colder at the same time of year, 13 days from 22 March to 3 April had an average of +0.8 C. In terms of early winter season sustained cold, the interval 11-16 Nov 1919 averaged --0.3 C. 

Edited by Roger J Smith
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Longest Hot Spells

 

This table lists all spells with mean daily CET values at or above 20.0 C lasting at least seven days, in the period 1772 to 2021. Rank by length and as second determinant max value. Actual values in brackets are not in the qualifying period but added at either end to illustrate longevity of warm spell when these end days are  >19C. Where end days are cooler than 19, no entries appear in brackets.

The duration of the qualifying hot spells refers to the dates not in brackets, those dates can be derived from counting backward or forward from end dates. For example with the first entry, the extended period is 23 June to 9 July 1976,.

Note: The table is based on CET legacy data. CET v2.0 data are now shown in a second line of daily means. In all cases, the ranks assigned using CET legacy hold up. A search of CET v2.0 was conducted for any additional qualifying spells but none were found. 

 

Rank __ Period __ (extended) ___ Actual values with warmest in bold

 

1 ___ 14d __ 17d ____ 25 June to 8 July 1976

CET leg ___ (20.7,19.2) 21.0,22.3,22.5,22.6,22.4,22.1,22.9,22.8,24.6 24.7,23.9,23.3,22.6,21.4 (19.4)

CET v2.0 __ (20.6,19.1) 20.9  22.2 22.4 22.5 22.3 22.0 22.8 22.7 24.4 24.5 23.8 23.2 22.5 21.2 (19.2)

_________and seven further very warm days mainly above 18, a total spell of 24 very warm days.

2 ___ 10d __ 14d ____ 8 Jul to 17 Jul 1983

CET leg ____ (19.1,19.3,19.7) 20.3,20.6,20.3,21.6,22.6,22.7,22.1,22.4,22.5,21.2 (19.8.)

CET v2.0 ___ (19.0,19.2,19.6) 20.3,20.6,20.2,21.5,22.6,22.6,22.0,22.3,22.4,21.2 (19.8.)

3 ____ 9d __ 10d ___ 4 Aug to 12 Aug 2003

CET leg ____ 20.5,23.1,22.5,21.5,21.1,23.9,22.4,21.4,21.4 (19.1)

CET v2.0 ___20.6,23.1,22.5,21.5,21.2,23.9,22.5,21.4,21.4 (19.1)

4 ____ 8d __ 11d ___ 28 Jul to 4 Aug 1995**

CET leg ____ (20.5,20.5,19.5) 20.2,21.1,21.2,23.4,24.9,24.6,23.4,20.5 

CET v2.0 ___ (20.4,20.3,19.4) 20.0,21.0,21.1,23.3,24.8,24.6,23.4,20.5

5 ____ 8d __ 12 Jul to 19 Jul 1808

CET both __ 22,4,24.5,24.4,20.7,22.0,20.2,21.2,21.7

6 ____ 8d __ 18d __ 6 Aug to 13 Aug 1997

CET leg ___ 20.1,21.5,22.0,21.7,22.5 22.6,21.5,20.6 (19.0,19.2,20.3,20.6,20.8,22.1,21.2,19.4,20.3,19.7)

CET v2.0 __ 20.2,21.6,22.0,21.7,22.6,22.6,21.5,20.7 (19.0,19.2,20.3,20.6,20.9,22.2,21.2,19.5,20.3,19.7)

7 ____ 8d __ 11d __ 15 Aug to 22 Aug 1947

CET leg ___ (19.7,19.3) 20.4,21.6,22.0,22.1,20.9,20.0,20.1,20.0 (19.1) 

CET v2.0 __ (19.7,19.3) 20.4,21.6,22.0,22.1,20.9,20.0,20.0,20.0 (19.1)

8 ____ 7d __ 8d ___ 6 Aug to 12 Aug 2020

CET leg ___ 20.4,21.6,21.6,20.7,22.0,24.0, 25.1 (19.8) 

CET v2.0 __ 20.5,21.7,21.7,20.8,22.3,24,2,25.2 (19.9)

9 ____ 7d __ 9d __ 3 Aug to 9 Aug 1975

CET leg ____ (19.3,19.8.) 22.0,23.4,22.1,20.8,22.8,23.7,21.0

CET v2.0 ___ (19.3,19.8.) 22.0,23,4,22.1,20.8,22.8,23.8,21.0

10 ____ 7d __ 8d __ 4 to 10 Sep 2023

only CET v2.0 __ 20.2, 20.6, 21.1, 23.3, 22.0, 22.8, 21.6 (19.9)

11 ____ 7d __ 8d __ 16 Aug to 22 Aug 1995

CET leg ___ (19.1) 20.4,20.8,21.7,22.1,21.9,21.4,21.4 (13d starting 10 Aug to 22 Aug generally above 19)

CET v2.0 __(19.0) 20.4,20.7,21.7,22.0,21.9,21.3,21.4

 

The following list are all cases where all but one day (seven or more in total) hit 20.0, regardless of value of cooler day. Spells may contain two cooler days if total length exceeds ten (only the 1793 spell qualified this way). Rank by length and as second determinant max value. Ranks refer to the length of qualifying period. By definition, all six day spells of consecutive 20+ days are included. That would extend the ranking of the above list as follows. Spell 1 below ranks 12, spell 3 ranks 13, spell 4 ranks 14, spell 5 ranks 15, spell 7 ranks 16th, spell 9 ranks 17th and spell 10 ranks 18th for consecutive 20+ days (ranked by length then peak value). The same rules are used for extended durations of these core hot spells. Only one spell has intruding <20 C days below 19.0, that being the 17.6 and 18.8 in days 4 and 9 of the 11 day spell in 1793. 

New entries for August 2022 (below) and Sept 2023 (above) have only the v2.0 CET data. 

 

Rank __ Period __ (extended) ____ Actual values with warmest in bold

 

1 ___ 11d __ 15d ___ 17 Jul to 27 Jul 2006 ____

CET leg ___ (19.3) 20.9,22.1,24.5,22.7,21.7,21.9,19.6,20.0,22.7,23,2,21,2 (19.8,19.5,19.0)

CET v2.0 __ (19.4) 21.0,22.2,24.6,22.8,21.9,22.0,19.8,20.1,22.8,23,2,21,3 (19.9,19.6,19.1)

2 ___ 11d __ 12d ___ 6 Jul to 16 Jul 1793

CET both ___ 20.0,21.9,20.0,17.6,20.6,20.3,20.7,20.3,18.8,20.6,22.2,(19.8.) (12d incl 17th)

3 ____ 7d ___ 9d ___ 14 Jul to 20 Jul 1825

CET both ____ (19.2,19.6),20.0,23.7,21.3,21.2,23.3,23.5,19.7

4 ____ 7d ___ 8d ___ 9 Aug to 15 Aug 2022

CET v2.0 ___ (19.0) 18.8,20.5,21.9,23.0,23,4,23.6,21.4

5 ____ 7d ___ 7d ___ 20 Jul to 26 Jul 1989

CET leg ____ 20.5,22.7,23.1,22.4,22.1,21.3,19.1

CET v2.0 ___ 20.4,22.6,23.0,22.3,22.0,21.1,18.9

6 ____ 7d ___ 8d ___ 12 Aug to 18 Aug 1893

CET leg ___ 20.2,19.8,21.1,22.1,21.0,22.0,22.6 (19.6)*

CET v2.0___20.3,19.7,20.7,21.7,21.4,21.6,22.0 (19.6)*

7 ____ 7d __ 17 Jul to 23 Jul 2021

CET leg ___ 20.5, 21.2, 21.2, 21.6, 21.5, 22.2, 19.0

CET v2.0 __ 20.6, 21.4, 21.3, 21.7, 21.6, 22.3, 19.2

8 ____ 7d __ 10d ___ 16 Aug to 22 Aug 1997

CET leg ___ (19.0,19.2) 20.3,20.6,20.8,22.1,21.2,19.4,20.3 (19.7) (see above, 18d spell in total)

CET v2.0 __ (19.0,19.2),20.3,20.6,20.9,22.2,21.2,19.5,20.3,(19.7)

9 ___ 7d __ 9d __ 14 to 20 June 1846^

CET both ___ (19.5,19.3) 18.7 20.4 20.0 20.2 20.4 20.4 21.7 (18.0 22.0) 

10 ____ 7d __ 6 Jul to 12 Jul 1934

CET leg ____ 20.2,20.9,20.4,20.4,20.3,20.2,19.3

CET v2.0 ___ 20.3,20.9,20.5,20.4,20.3,20.2,19.2

(the following 1955 interval Aug 19-25 just missed qualifying in both legacy and v2.0) ...

CET leg ____ 20.6,18.4,20.4,22.1,22.1,21.4,19.9

CET v2.0 ___ 20.6,18.4,20.3,22.1,22.1,21.4,19.9

.... also this 30 June - 6 July 2006 spell was within 0.2 of qualifying in CET legacy and 0.1 in v2.0

CET leg ____ 18.4,20.3,22.7,21.9,21.4,20.0,19.8

CET v2.0 ___ 18.4,20.4,22.8,22.0,21.5,20.1,19.9

 

^ By the rules established, the June 1846 spell has its extension before rather than after, since 18.7 rather than 18.0 completes the seven day interval, but this could be seen as an eleven-day extended interval instead.

 

_________________________________________________

 

14 days from 26 June to 9 July 1826 were warmer than 19.2 (both versions CET), the spell failed to qualify above, max 22.8 on 27 June.

__CET both __ 21.2,22.8,21.5,19.8,20.7,19.4,19.2,20.9,21.8,20.4,20.9,20.0,19.3,19.4

14 days from 7 to 20 July 1921 were warmer than 18.0, the spell failed to qualify above, max 22.3 on 18 July (22.7 19th in v2.0).

__CET v2.0 __ 18.9,19.3,21.6,22.2,20.5,19.5,19.9,18.2,19.1,20.5,20.9,22.6,22.7,21.5

13 days from 4 July to 16 July 1852 were warmer than 18.5 (both versions CET), the spell failed to qualify above, max 24.0 on 5 July.

___CET v2.0 __ 21.6,24.0,23.1,20.8,19.5,20.6,19.4,19.6,18.5,19.6,19.4,20.9,20.2

 

*12 days from 8 Aug to 19 Aug 1893 were warmer than 18.4 in CET legacy and 18.8 in v2.0, the spell produced a 7d qualifying period above.

** 20 days from 27 July to 15 Aug 1995 were warmer than 18.2 and the 7 days 3-9 Aug qualified with consecutive days above 20, other separate periods would not have qualified for the "almost" section.

Not all hot summers have lengthy spells above 19, for example, July 1868 had numerous days above 19.0 but spells of only 5 or 6 days with interruptions. 2 to 6 Aug 1868 were all 20 or higher, as were 13-17 Aug 1876 and 18-22 July 1878. Then July and August 1911 had many hot days but again, no qualifying spells, the closest was 8 days 7-14 August where five were above 20 but not consecutively. A nine day spell in July 1923 (6-14 Jul) also failed to qualify despite six (non-consecutive) days above 20 and a max of 24.0 on the 13th. The former hottest day on record in late July 1948 (25.2, 29th; 25.1 in v2.0) was part of five consecutive days above 20 but that spell failed to start and end with qualifying days and was relatively isolated otherwise. A similar outcome was found the next July (1949) from 23rd to 27th although this was a less intense hot spell. The hot spell in August 1990 was only four days of 20+ days and two others over 18. Five hot days 10-14 July 2005 also fell short.

An early summer period that failed to qualify was seven days from 29 May to 4 June 1947, there were five non-consecutive days above 20 in that spell.

Summer 2018 did not quite qualify for the second list with a six-day spell 22-27 July all over 19.0 being its longest hot spell, and twice recording three consecutive 20+ days (7-9 and 22-24 July). Summer 2017 had a five-day spell all over 20 (17-21 June). July 2014 had a four-day spell over 20 (23-26 July). And although it was quite hot 13th-25th July 2013, the longest spell over 20 was three days (17th-19th).

Note also, the recent hot spell in June 2023 had these values (but did not qualify) from 10 to 19 June

19.7, 20.6, 21.7, 20.9, 17.8, 18.5, 19.1, 17.9, 18.9, 17.9. ... this is definitely the longest June spell with all days above 17.8 C (all in June, the late June 1976 spell extended longer into July). 

 

Edited by Roger J Smith
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  • Location: Rossland BC Canada
  • Location: Rossland BC Canada

After the above post appeared in 2013, Aderyn Coch posted a list of heat waves using a slightly different criterion. I adapted that list to the following table which is now extended to 2020 ... the list is chronological rather than rank ordered.

NOTE: This table has not yet been adjusted for v2.0 changes, still the original post from Aderyn Coch with some editing by me to create ranks..

Summer heat waves -- ten days or more with every day 18.0+. 

DURATION __ RANK for LENGTH __ RANK for AVG CET (first 10)  ____ DATES (continuously above 18.0) & MEAN CET

11 _________ 20t ________ xx ______ 5-15th August 1773 ______19.65

13 _________ 14 ________ xx _______8-20th July 1783 ________ 19.48

10 _________ 25t ________ 3 _______11-20th July 1808 ________ 21.40

 9 __________ --- ________ --- ______ 12th-20th July 1825^__(21.28 - 9 days) 20.93 for 10 days

16 __________ 5t ________ xx ______ 26th June - 11th July 1826 _ 20.26

12 _________ 15t ________ xx ______ 11-22nd June 1846 _______19.94

14 _________ 10t ________ 12 ______ 4-17th July 1852 ________ 20.38

14 _________ 10t ________ 13 _______8th-21st August 1893 ____ 20.36

11 _________ 20t ________ xx _______18-28th July 1900 _______ 19.98

10 _________ 25t ________ xx _______ 25th July -- 3rd Aug 1911 _ 20.08

14 _________ 10t ________ 11 ________7-20th July 1921 _______ 20.45

11 _________ 20t _________10 ________5-15th July 1923 _______ 20.66

12 _________ 15t ________ xx _______31st July -- 11th Aug 1938 _ 19.09

10 _________ 25t ________ xx _______25th July -- 3rd Aug 1947 __19.71

12 _________ 15t ________ 15 _______12-23rd August 1947 _____ 20.28

12 _________ 15t ________ xx ________7-18th July 1955 ________19.43

11 _________ 20t ________ xx _______16-26th August 1955 ______19.95

20 __________ 1 ________ 14 _______ 27th July -- 15th Aug 1975 _ 20.35

18 _________ 2t _________ 1 ________22nd June -- 9th July 1976 _ 22.04

16 _________ 5t _________ xx _______11-26th August 1976 ______ 19.05

15 _________ 8t _________ 8 ________ 4-18th July 1983 _________ 20.81

10 _________ 25t ________ xx _______ 22-31st July 1983 ________ 19.45

10 _________ 25t ________ xx ________17-26th August 1983 _____ 18.98

10 _________ 25t ________ 9 ________ 17-26th July 1989 ________ 20.67

14 _________ 10t ________ 6 ________ 24th July -- 6th August 1995_21.04

18 _________ 2t __________7 ________6-23rd August 1997 ______ 20.84

10 _________ 25t _________ 2 ________4-13th August 2003 ______ 21.69

12 _________ 15t ________ xx ________1-12th August 2004 _______19.71

15 _________ 8t _________ 4 _________16-30th July 2006 ________ 21.21

17 _________ 4 _________ xx _________13-29th July 2013 ________19.56*

11 _________ 20t ________ xx _________17-27th July 2014 _______ 19.90

16 _________ 5t _________ xx _________ 25th June-10th July 2018 _ 19.34**

10 _________ 25t ________ 5 __________ 5-14 Aug 2020 _________ 21.20

 

*with one day at 17.7 (30th July) this spell went to 21 days (ending 2 Aug) same CET of 19.56

**with one day at 17.5 (11th July) this spell went to 22 days (ending 16 July) with CET of 19.17

^ (the spell in July 1825 failed to extend to ten days (11th was 17.6) but comes very close to matching some of the hotter spells)

__________________________________________________

 

NOTES:

 

Ranking for mean temp shows only the top 15 because it is likely that below that range, the spells shown here have been matched by more variable spells (not consecutively > 18.0) of similar durations. The 1976 spell is even more remarkable when you consider that a further week of hot weather occurred after one day failed to reach 18.0. Many hot summers could not quite generate a spell that qualified for this particular listing, 1868 for example had numerous days above 18.0 between 7th July and 10th August but failed to produce ten consecutive days that warm. 

Edited by Roger J Smith
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  • Location: Rossland BC Canada
  • Location: Rossland BC Canada

CET normal values for every 30-year period starting with 1661-1690 ending with 1991-2020

 ... if lines overflow, reduce screen magnification (125% or lower should work)

NOTE: This table will need to be edited so that it shows decade averages for v2.0, changes will be fairly minor and restricted to periods that include years from 1853 to present, a slightly cooler set of values for 1961-90 and 1971-2000 is already known to be an outcome from work done on our CET contest files, many of the monthly averages are now 0.1 or 0.2 lower there. Changes are less noteworthy before that, and also in the decades 1981-2010 (0.1 average reduction), and 1991-2020 will turn out similar. 

 

30-yr period _____ JAN __ FEB __ MAR __ APR __ MAY __ JUN __ JUL __ AUG __ SEP __ OCT __ NOV __ DEC__YEAR

 

(all data 1659-2018)_3.3 ___3.9 ___5.3 ___7.9 __ 11.2 __ 14.3 __ 16.0 __ 15.6 __ 13.3 ___9.7 ___6.1 ___4.1 __ 9.2

 

1661-1690 _______ 2.9 ___3.1 ___4.8 ___7.4 __ 11.0 __ 14.3 __ 15.8 __ 15.3 __ 12.8 ___9.4 ___5.7 ___3.4 __ 8.8

1671-1700________2.6 ___2.6 ___4.4 ___7.1 __ 10.7 __ 13.9 __ 15.5 __ 14.9 __ 12.3 ___9.0 ___5.3 ___3.3 __ 8.5

1681-1710________2.4 ___3.0 ___4.5 ___7.3 __ 10.8 __ 13.9 __ 15.5 __ 15.3 __ 12.6 ___9.0 ___5.6 ___4.0 __ 8.6

1691-1720________2.6 ___3.3 ___4.7 ___7.4 __ 10.7 __ 14.0 __ 15.8 __ 15.5 __ 12.9 ___9.1 ___5.8 ___3.8 __ 8.8

1701-1730________3.1 ___3.8 ___5.1 ___7.9 __ 11.3 __ 14.4 __ 15.9 __ 15.8 __ 13.6 ___9.5 ___6.4 ___4.0 __ 9.2

1711-1740________3.4 ___4.0 ___5.4 ___8.1 __ 11.2 __ 14.6 __ 16.0 __ 15.7 __ 13.8 ___9.7 ___6.2 ___4.1 __ 9.3

1721-1750________3.4 ___3.9 ___5.2 ___7.8 __ 11.4 __ 14.5 __ 16.0 __ 15.9 __ 14.0 ___9.6 ___6.3 ___4.2 __ 9.3

1731-1760________3.3 ___3.8 ___5.2 ___7.7 __ 11.2 __ 14.5 __ 16.1 __ 15.8 __ 13.8 ___9.4 ___5.8 ___4.2 __ 9.2

1741-1770________2.9 ___3.7 ___4.8 ___7.6 __ 11.2 __ 14.3 __ 16.0 __ 15.7 __ 13.6 ___9.2 ___5.7 ___3.9 __ 9.0

1751-1780________2.4 ___3.7 ___5.3 ___7.9 __ 11.2 __ 14.5 __ 16.1 __ 15.8 __ 13.4 ___9.3 ___5.6 ___3.7 __ 9.0

1761-1790________2.4 ___3.7 ___4.8 ___7.9 __ 11.5 __ 14.6 __ 16.1 __ 15.9 __ 13.3 ___9.2 ___5.5 ___3.7 __ 9.0

1771-1800________2.4 ___3.8 ___4.9 ___8.1 __ 11.4 __ 14.7 __ 16.3 __ 15.9 __ 13.3 ___9.2 ___5.5 ___3.5 __ 9.1

1781-1810________2.9 ___3.8 ___4.6 ___8.0 __ 11.5 __ 14.6 __ 16.1 __ 15.8 __ 13.2 ___9.4 ___5.3 ___3.2 __ 9.0

1791-1820________2.5 ___4.0 ___5.1 ___8.0 __ 11.2 __ 14.2 __ 15.9 __ 15.6 __ 13.1 ___9.5 ___5.5 ___3.2 __ 9.0

1801-1830________2.4 ___3.9 ___5.5 ___7.9 __ 11.4 __ 14.2 __ 15.8 __ 15.8 __ 13.1 ___9.8 ___5.9 ___3.6 __ 9.1

1811-1840________2.3 ___4.0 ___5.4 ___7.9 __ 11.4 __ 14.4 __ 15.7 __ 15.6 __ 13.0 ___9.8 ___6.1 ___4.0 __ 9.1

1821-1850________2.6 ___3.9 ___5.5 ___8.0 __ 11.6 __ 14.7 __ 15.7 __ 15.3 __ 13.0 ___9.6 ___6.3 ___4.5 __ 9.2

1831-1860________3.2 ___3.7 ___5.2 ___7.8 __ 11.2 __ 14.6 __ 15.7 __ 15.4 __ 13.0 ___9.6 ___5.8 ___4.3 __ 9.1

1841-1870________3.4 ___3.9 ___5.2 ___8.2 __ 11.2 __ 14.4 __ 15.8 __ 15.4 __ 13.2 ___9.6 ___5.7 ___4.3 __ 9.2

1851-1880________3.7 ___4.2 ___5.2 ___8.2 __ 10.8 __ 14.2 __ 15.9 __ 15.6 __ 13.2 ___9.7 ___5.3 ___4.1 __ 9.2

1861-1890________3.5 ___4.5 ___5.1 ___8.1 __ 10.9 __ 14.1 __ 15.8 __ 15.4 __ 13.2 ___9.3 ___5.7 ___3.8 __ 9.1

1871-1900________3.4 ___4.2 ___5.2 ___7.9 __ 10.7 __ 14.2 __ 15.8 __ 15.5 __ 13.1 ___9.0 ___6.1 ___3.7 __ 9.1

1881-1910________3.5 ___3.9 ___5.1 ___7.7 __ 10.9 __ 14.1 __ 15.7 __ 15.2 __ 13.1 ___9.3 ___6.3 ___4.0 __ 9.1

1891-1920________3.7 ___4.1 ___5.3 ___7.9 __ 11.3 __ 14.1 __ 15.7 __ 15.4 __ 13.1 ___9.4 ___6.2 ___4.5 __ 9.2

1901-1930________4.2 ___4.2 ___5.5 ___8.0 __ 11.3 __ 13.8 __ 15.8 __ 15.2 __ 13.1 ___9.8 ___5.8 ___4.5 __ 9.2

1911-1940________4.2 ___4.3 ___5.7 ___8.2 __ 11.5 __ 14.2 __ 15.9 __ 15.6 __ 13.3 ___9.6 ___6.2 ___4.6 __ 9.4

1921-1950________3.9 ___4.2 ___5.9 ___8.0 __ 11.3 __ 14.4 __ 16.3 __ 15.9 __ 13.6 __10.0 ___6.4 ___4.5 __ 9.5

1931-1960________3.5 ___3.9 ___5.9 ___8.1 __ 11.5 __ 14.6 __ 16.2 __ 16.0 __ 13.7 __10.1 ___6.8 ___4.7 __ 9.6

1941-1970________3.3 ___3.6 ___5.7 ___8.1 __ 11.4 __ 14.5 __ 16.0 __ 15.7 __ 13.7 __10.6 ___6.6 ___4.4 __ 9.5

1951-1980________3.6 ___3.7 ___5.6 ___8.0 __ 11.3 __ 14.3 __ 15.9 __ 15.6 __ 13.6 __10.5 ___6.6 ___4.7 __ 9.4

1961-1990________3.8 ___3.8 ___5.7 ___7.9 __ 11.2 __ 14.2 __ 16.1 __ 15.8 __ 13.6 __10.6 ___6.6 ___4.7 __ 9.5

1971-2000________4.2 ___4.2 ___6.3 ___8.1 __ 11.3 __ 14.1 __ 16.5 __ 16.2 __ 13.7 __10.4 ___6.9 ___5.1 __ 9.7

1981-2010________4.4 ___4.4 ___6.6 ___8.5 __ 11.7 __ 14.4 __ 16.7 __ 16.4 __ 14.0 __10.7 ___7.1 ___4.6 __10.0

 

1991-2020 _______ 4.7 __ 4.9 __ 6.7 ___ 9.0 __ 11.9 __ 14.7 __ 16.8 __ 16.5 __ 14.2 __10.9 __ 7.4 __ 5.0 __ 10.2

(note Apr 1991-2020 is 8.95 and could be rounded down to 8.9 ... I calculcated these values and do not have access to any "official" values that the CET have generated)

 

 

Edited by Roger J Smith
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  • Location: Edmonton Alberta(via Chelmsford, Exeter & Calgary)
  • Weather Preferences: Sunshine and 15-25c
  • Location: Edmonton Alberta(via Chelmsford, Exeter & Calgary)

Looks like the period 1901-1930 was pretty drab..very mild winters followed by very cool summers.

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  • Location: Rossland BC Canada
  • Location: Rossland BC Canada

Yes, 1920 and 1922 seem like really the worst summers imaginable, with very good summers in 1921 and 1923. That interval of 1901-1930 is also noteworthy for some very chilly spells in spring and autumn. 

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  • Location: Rossland BC Canada
  • Location: Rossland BC Canada

Significant record daily CET values

  

 A "significant" record is defined as one that is either earliest or latest on record. 

These can also be called "benchmark" records. This is the list generated ... with legacy and v2.0 values now shown

 

RECORD MAXIMUM DAILY MEANS

CET __ CET

legacy_ v2.0 __ Date ___ notes

12.6 __ 12.7 __  1 Jan 2022 _ replaced these previous entries (see below)*

 (9.8 __ 9.7 on 28 Jan 1944 (t1983 v2.0) is lowest of year) ... benchmark reversal point

11.6 __ 11.6 __ 23 Jan 1834, 25 Jan 2016 are "reversal high benchmarks" no longer including 3 Jan 1932

12.2 __ 12.2 __ 3 Feb 2004

12.8 __ 12.8 __ 4 Feb 2004

-- -- ___ 13.7 __ 15 Feb 2024 _ only observed in v2.0

13.4 __ 13.4 __12 Mar 1957 _ now only in CET legacy

14.1 __ 14.2 __18 Mar 1990

14.6 __ 14.6 __26 Mar 1777

14.8 __ 14.8 __27 Mar 1777

15.1 __ 15.2 __30 Mar 2017

15.6 __ 15.6 __ 4 Apr 1946

16.0 __ 15.9 __11 Apr 1869

16.1 __ 15.9 __14 Apr 1869 __ not a benchmark value in v2.0

16.3 __ 16.3 __15 Apr 1945

17.0 __ 17.1 __16 Apr 1945

17.6 __ 17.7 __19 Apr 2018

19.7 __ 19.7 __29 Apr 1775

20.0 __ 20.0 __15 May 1833

20.4 __ 20.3 __19 May 1868

21.0 __ 20.9 __25 May 1953

21.2 __ 21.2 __29 May 1780

22.3 __ 22.3 __ 2 June 1947

23.0 __ 22.9 __ 3 June 1947

21.9 __ 23.2 __19 June 2005 __ only a benchmark in v2.0, not CET legacy

24.6 __ 24.7 __ 1 July 2015

24.7 __ 24.5 __ 4 July 1976 __ no longer a benchmark value in v2.0

--- --- __ 28.1 __19 July 2022 __ not part of CET legacy set, new high benchmark and reversal point

25.2 __ 25.3 __25 July 2019 __ now regarded as first descending benchmark for v2.0 (was high point)

25.2 __ 25.1 __29 July 1948 __ was a descending benchmark for CET legacy, not for v2.0

25.1 __ 25.2 __12 Aug 2020 (replaced three values from 1-9 Aug from 1995, 1975, 2003)

23.6 __ 23.9 __13 Aug 1911

--- --- __ 23.6 __14 Aug 2022 __ not part of CET legacy set

22.8 __ 23.1 __27 Aug 1930 __ only a benchmark in v2.0, not CET legacy

23.0 __ 23.0 __28 Aug 1942

22.6 __ 22.3 __ 2 Sep 1906 __ no longer a benchmark in v2.0

--- __ 23.3 __ 7 Sep 2023 __ replaced 22.4 __ 22.4 __ 5 Sep 1949

--- __ 22.8 __ 9 Sep 2023 __ replaces all of the following in v2.0 ...

21.3 __ (21.6) __ 8 Sep 1898 __ only a benchmark in v2.0, not CET legacy (8 Sep 2021 also 21.4 both sets)

--- ___ 21.6 __10 Sep 2023 __ 

21.4 __ 21.4 __21 Sep 2006

20.2 __ 20.1 __ 1 Oct 1985

19.8 __ 19.8 __ 3 Oct 2011

19.0 __ 18.9 __ 6 Oct 1921

18.5 __ 18.4 __13 Oct 2018

17.2 __ 17.1 __14 Oct 2017

16.9 __ 16.7 __31 Oct 2014

15.4 __ 15.5 __ 5 Nov 1938

14.6 __ 14.7 __13 Nov 1938

14.4 __ 14.4 __22 Nov 1947

13.1 __ 13.0 __19 Dec 2015

12.9 __ 12.9 __31 Dec 2021 replaces the previous two as benchmarks and with likely help of 1 Jan 2022 removes the calendar year factor

... these values had been recognized as benchmarks before the 12.9 on 31 Dec 2021 ... 

 

12.0 __ 11.9 __29 Dec 1987 (eliminated by 31 Dec 2021)

11.1 __ 11.0 __31 Dec 1859 (not really valid, only appears due to calendar)

________________________________

* (replaced) 10.8 (both CET) __ 1 Jan 1851 (not really valid, only appears due to calendar)

(replaced) 11.6 _ 11.5 ___ 3 Jan 1932

 

 

 RECORD MINIMUM DAILY MEANS

  

 

CET __ CET

legacy_ v2.0 __ Date ___ notes

 (as there was a reading of -10.8 in December, the values in early January must be colder than that to qualify)

 -11.9 _-11.9 __20 Jan 1838 (minimum and benchmark reversal point)

 -8.9 __ -8.9 __ 25 Jan 1795

 -8.8 __ -8.8 ___ 9 Feb 1816

 -7.7 __ -7.7 __ 12 Feb 1845 __ only a benchmark value in v2.0

 -8.0 __ -7.4 __ 15 Feb 1929 

 -7.3 __ -7.2  __16 Feb 1855

 -7.1 __ -7.0 __ 17 Feb 1855

 -6.7 __ -6.6 __ 24 Feb 1947

 -6.5 __ -6.5 __ 13 Mar 1845

 -3.7 __ -3.7 __ 14 Mar 1845

 -3.0 __ -3.0 __ 16 Mar 1845

 -2.2 __ -2.2 __ 17 Mar 1845

 -1.6 __ -1.6 __ 21 Mar 1899

 -1.3 __ -1.3 __ 25 Mar 1853

 -0.8 __ -0.8 __ 31 Mar 1799

 -0.5 __ -0.5 ___ 3 Apr 1799

 -0.2 __ -0.2 __ 19 Apr 1772

 0.5 __ 0.6 __ 24 Apr 1908

 0.7 __ 0.7 __ 29 Apr 1856

 2.6 __ 2.7 __ 30 Apr 1945

 2.9 __ 3.1 ___ 8 May 1861

 3.6 __ 3.6 __ 17 May 1935

 4.1 __ 4.2 __ 18 May 1872

 4.6 __ 4.6 __ 26 May 1821

 4.9 __ 4.9 __ 30 May 1807

 6.4 __ 6.4 __ 31 May 1802

 7.3 __ 7.3 __ 19 June 1795

 8.7 __ 8.7 __ 20 July 1836

10.1 __ 10.1 __ 23 July 1843 considered to be last benchmark before reversal for notable record lows

(11.9 on 1 Aug 1888 (t1907 in v2.0) is the highest value of the year) _ benchmark reversal point

10.5 __ 10.8, 10.3 __ 3/12 Aug 1912 _ significant benchmarks both 10.5 in CET legacy

 9.5 __ 9.9 __ 16 Aug 1888 CET legacy, 16 Aug 1810 CET v2.0 (1888 in v2.0 is 10.6)

 9.8 __ 9.8 __ 21 Aug 1850 __ only a benchmark in v2.0

 9.1 __ 9.1 __ 24 Aug 1864

 8.8 __ 8.8 __ 26 Aug 1864

 7.1 __ 7.1 ___ 1 Sep 1816

 6.7 __ 6.7 __ 13 Sep 1807

 6.5 __ 6.8 __ 21 Sep 1872 __ not a benchmark in v2.0

 6.3 __ 6.6 __ 22 Sep 1872

 6.0 __ 6.0 __ 23 Sep 1773

 4.9 __ 4.9 __ 28 Sep 1824

 3.6 __  3.6 ___ 2 Oct 1817 (tied 1888 in v2.0 only)

 3.5 __ 3.5 ___ 7 Oct 1829

 3.3 __ 3.3 ___ 9 Oct 1852

 3.2 __ 3.0 __ 12 Oct 1887

 2.2 __ 2.2 __ 13 Oct 1838

 1.8 __ 1.8 __ 16 Oct 1843

 1.5 __ 1.5 __ 19 Oct 1813

 1.2 __ 1.2 __ 21 Oct 1842

 0.9 __ 1.0 __ 23 Oct 1859

 0.6 __ 0.7 __ 24 Oct 1859

 0.3 __ 0.3 __ 29 Oct 1895

-0.6 __-0.6 ___ 7 Nov 1791

-1.2 __-1.2 ___ 8 Nov 1812

-1.4 __-1.5 __ 12 Nov 1919

-2.1 __-2.1 __ 15 Nov 1965

-2.9 __-2.3 __ 16 Nov 1901

-4.2 __-3.9 __ 23 Nov 1858

-4.6 __-3.5 __ 24 Nov 1904 __ not a benchmark in v2.0, daily record is now -3.6 (1816)

-4.0 __-4.0 __ 28 Nov 2010 __ only a benchmark in v2.0

-4.7 __-4.7 ___ 2 Dec 1796

-5.5 __-5.5 ___ 6 Dec 1844

-5.7 __ -5.3 ___ 7 Dec 1879 __ not a benchmark in v2.0

-6.7 __-6.7 __ 11 Dec 1784

-8.5 __ -8.7 __ 12 Dec 1981

-10.8 __-10.8 __25 Dec 1796

Edited by Roger J Smith
Feb 15 2024 enters table
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  • Location: Rossland BC Canada
  • Location: Rossland BC Canada

C.E.T. daily records for the most recent interval (1940 to 2023)

NOTE: This section still contains data of the CET legacy data set but now has material added for v2.0 including records set since the legacy set ended in April 2022. These changes are ongoing and notes in tables will indicate how far into the year changes have been incorporated. The updated version will have two lines of data per day, one will retain the CET legacy comparisons, and a second line of text will show v2.0 comparisons. If there are no adjustments, one line of data will be marked as "both."

An earlier section lists the all-time daily extremes for 1772 to 2023. But what about the more recent past? Many of the daily maxima were set in that recent era, but fewer of the minimum extremes, so this is the list of extremes that have fallen in the most recent interval defined as 1940 to (edit) 2023. Where a record is also the all-time record, the earlier mark is noted, in a few cases, that was earlier in the recent interval rather than before 1940 (rarely in the case of minima, occasionally for the maxima). Where a recent interval record max has not broken the previous mark, that continuing record high is shown in red italics. Only those few recent minima that are all-time records have a highlighted entry in the final column. For most of them, the previous all-time record is shown in regular type and the records broken recently are shown in blue italics, so it's easy to find the modern records). So to sum up, red italics means continuing maxima from before 1940, and blue italics are for minimum records that have fallen since 1940. All record low means, and highs set 1940 to present, are now being highlighted by simple bold text, as tables are updated to contain legacy and v2.0 data. The v2.0 data have altered some record max and min daily means bringing new years into tables. 

JANUARY

set _ Date __ Record Max since 1940 __  previous mark _______ Record Min since 1940 __ previous mark

leg __ 01 ___12.6 (2022)  ________ 10.8 (1851)  ______ -4.9 (1962) _________ -5.9 (1820)

v2.0_ 01 ___ 12.7 (2022)  ________ 10.8 (1851) ______ -4.9 (1962) _________ -5.9 (1820)

leg __ 02 ___10.4 (1948.) _________10.1 (1935) ______ -4.0 (1962) _________ -6.1 (1786)

v2.0_ 02 ___ 10.4 (1948.) ________ 10.4 (1922) ______ -4.0 (1962) _________ -6.1 (1786)

leg __ 03 ___10.6 (1948.) _________11.6 (1932) ______ -3.5 (1941&1979) ___ -7.7 (1795)

v2.0 _ 03 ___10.6 (1948.) _________11.5 (1932) ______ -3.5 (1941&1979) ___ -7.7 (1795)

leg __ 04 ___10.5 (1948.) _________10.3 (1932) ______ -3.4 (1971&2010) ___ -9.3 (1867)

v2.0_ 04 ___10.4 (1948.) _________10.3 (1932) ______ -3.4 (1971&2010) ___ -9.3 (1867)

leg __ 05 ___11.4 (1957) __________ 9.7 (1932) ______ -3.5 (1979) __________ -6.5 (1789)

v2.0 _ 05 ___11.3 (1957) __________ 9.7 (1932) ______ -3.5 (1979) __________ -6.5 (1789) 

leg __ 06 ____9.8 (1999) _________ 10.3 (1898.) ______ -3.0 (2009) __________ -6.9 (1894)

v2.0_ 06 ____9.8 (1999) _________ 10.4 (1898.) ______ -2.9 (2009) __________ -7.0 (1894)

leg __ 07 ____9.3 (1949&1989) ___10.3 (1890) ______ -4.6 (2010) __________ -7.7 (1841)

v2.0_ 07 ____9.3 (1949) __________ 10.4 (1890) ______ -4.5 (2010) __________ -7.7 (1841)

leg __ 08 ____9.7 (1971) __________ 9.9 (1858.) ______ -3.7 (2010) ___________ -9.2 (1841)

v2.0 _08 ____9.6 (1971) __________ 9.7 (1775, 1858.)__-3.6 (2010) __________ -9.2 (1841)

leg __ 09 ___10.7 (1998) ________ 10.4 (1914) ________ -3.3 (1982) __________ -5.0 (1841)

v2.0_ 09 ___ 10.6 (1998) _________ 9.4 (1873, 1914) __ -3.3 (1982) __________ -5.0 (1841) 

leg __ 10 ____10.1 (1998) _________11.1 (1921) _______ -5.2 (1982) __________ -6.7 (1814)

v2.0 _ 10 ____10.0 (1998) _________11.2 (1921) _______ -5.1 (1982) __________ -6.7 (1814)

both _ 11 ___ 10.1 (1990) _________ 9.9 (1950)*_______ -5.0 (1987) _________ -5.5 (1838.)

both _ 12 _____9.9 (1976&2007) ___9.6 (1818.) ______  -7.7 (1987) _________ -6.9 (1838)

leg __ 13 _____9.9 (2007) ________ 10.0 (1796&1873) _ -6.6 (1987) __________-6.5 (1820)

v2.0_ 13 ____10.0 (2007) ________ 10.0 (1796)^ ______ -6.6 (1987) __________-6.5 (1820)

leg __ 14 _____10.2 (2011) _________ 9.9 (1930) _______ -7.6 (1982) _________ -7.1 (1881)

v2.0_ 14 _____10.2 (2011) _________ 9.1 (1930) _______ -7.5 (1982) _________ -7.1 (1881)

leg __ 15 _____9.3 (1968.) _______ 10.3 (1804) _______ -4.4 (1982) _________ -8.5 (1820)

v2.0 _ 15 _____9.3 (1968.) _______ 10.3 (1804) _______ -4.3 (1982) _________ -8.5 (1820)

leg __ 16 ____10.8 (1990) _________ 9.8 (1796) _______ -3.6 (1985) _________ -7.7 (1881) 

v2.0 _ 16 ____10.8 (1990) _________ 9.8 (1796) _______ -3.6 (1985) _________ -7.4 (1881) 

leg __ 17 ____ 9.3 (2007) ________ 10.2 (1908.) _______ -5.6 (1940) _________ -6.2 (1881)

v2.0 _ 17 ____ 9.4 (2007) ________ 10.2 (1908.) _______ -5.6 (1940) _________ -6.9 (1881)

leg __ 18 ____ 9.5 (2008.)________ 10.0 (1828.) _______ -4.0 (1985) _________ -6.1 (1891)

v2.0 _ 18 ____ 9.6 (2008.)________ 10.0 (1828.) _______ -3.9 (1985) _________ -6.2 (1891)

leg __ 19 ____10.8 (2007) ________ 11.1 (1930) _______ -4.9 (1966) _________ -8.9 (1823)

v2.0 _ 19 ____10.8 (2007) ________ 11.3 (1930) _______ -4.9 (1966) _________ -8.9 (1823)

leg __ 20 ____11.2 (2008.)________ 11.1 (1898.)_______ -5.7 (1940) _________-11.9 (1838.)

v2.0 _ 20 ____11.2 (2008.)________ 11.0 (1898.)_______ -5.6 (1940) _________-11.9 (1838.)

leg __ 21 ____10.3 (2002) ________ 10.8 (1796&1898.) __-7.1 (1940) _________ -8.1 (1881)

v2.0 _ 21 ____10.3 (2002) ________ 10.8 (1796)^  _______ -7.0 (1940) _________ -8.0 (1881)

leg __ 22 ____10.2 (1969) ________ 10.3 (1878.) ________ -5.6 (1963) _________ -6.4 (1881)

v2.0 _ 22 ____10.3 (1969) _________ 9.8 (1878) ________ -5.6 (1963) _________ -6.5 (1881)

both _23 ____ 10.2 (1960) ________11.6 (1834) ________ -8.4 (1963) _________ -7.2 (1795)

leg __ 24 _____ 9.8 (2016&2018.) __10.6 (1782) ________ -8.2 (1963) _________-6.0 (1881)

leg __ 24 _____ 9.9 (2016&2018.) __10.6 (1782) ________ -8.2 (1963) _________-5.5 (1881)

leg __ 25 ____11.6 (2016) ________ 11.4 (1846) ________ -5.2 (1945) _________ -8.9 (1795)

v2.0 _ 25 ____11.6 (2016) ________ 11.4 (1846) ________ -5.1 (1945) _________ -8.9 (1795)

leg __ 26 _____ 9.3 (2003) ________ 10.0 (1834) ________ -7.6 (1945) _________-5.9 (1803)

v2.0 _ 26 _____ 9.3 (2003) ________ 10.0 (1834) ________ -7.5 (1945) _________-5.9 (1803)

leg __ 27 ____10.5 (2016) ________ 10.4 (2003)** _______ -5.6 (1945) _________ -6.5 (1776)

v2.0 _ 27 ____10.5 (2016) ________ 10.4 (2003)** _______ -5.5 (1945) _________ -6.5 (1776)

leg __ 28 _____ 9.8 (1944) __________9.5 (1843) __________-4.3 (1979) _________ -6.3 (1776)

v2.0 _ 28 _____ 9.7 (1944, 1983) ___ 9.5 (1843) _________ -4.4 (1979) _________ -6.3 (1776)

leg __ 29 ____ 10.2 (1953&1966) ___10.4 (1854) _________-6.4 (1947) _________ -6.8 (1776) 

v2.0 _ 29 ____ 10.2 (1966)^________ 10.2 (1854) _________-6.4 (1947) _________ -6.8 (1776) 

leg __ 30 ____ 10.2 (2000) ________ 10.0 (1923) _________-5.1 (1947) _________ -7.5 (1776)

v2.0 _ 30 ____ 10.2 (2000) _________ 9.8 (1923) _________-5.0 (1947) _________ -7.5 (1776)

leg __ 31 ____ 10.3 (2000) ________ 10.9 (1868) _________-4.5 (1972) _________ -7.2 (1776)

v2.0 _ 31 ____ 10.3 (2000) ________ 10.7 (1868) _________-4.5 (1972) _________ -7.2 (1776)

_____________________________________________________________

* 11 Jan -- as the previous record also in recent interval, before that the maximum was 9.6 (1946 leg and v2.0), also after 1940, so finally the existing record before that was only 8.9 (1873) (8.8 v2.0).

^ 13 Jan -- 1873 dropped to 9.9 in v2.0, 2007 replaced it as tied record value (1796 10.0)

^ 13 Jan -- 1898 dropped to 10.7 in v2.0, 1796 stayed at 10.8 for solo record. 

** 27 Jan -- as the previous record also in recent interval, before that the maximum was 10.1 (1867) (9.9 in v2.0).

^ 29 Jan -- 1953 dropped to 10.1 in v2.0 so no longer tied with 1966. 

==================================================================

FEBRUARY

Date __ Record Max since 1940 ____  previous mark __________ Record Min since 1940 __ previous mark

leg __ 01 ______ 9.4 (1985) ________ 11.4 (1923) __________-6.8 (1956) _________ -5.9 (1776)

v2.0 _ 01 ______ 9.4 (1985) ________ 11.0 (1923) __________-6.8 (1956) _________ -5.9 (1776)

leg __ 02 _____ 10.9 (2002&2004) __ 11.0 (1923) _________-6.5 (1956) _________ -5.9 (1830)

v2.0 _ 02 _____10.9 (2002&2004) __ 10.7 (1923) _________-6.4 (1956) _________ -5.9 (1830)

both _03 _____12.2 (2004) _________ 10.3 (1869&1967) __-5.4 (1841&1956) __ -5.4 (1841) 

leg __ 04 _____ 12.8 (2004) _________10.9 (1801) _________-3.0 (2012) _________ -5.0 (1912)

v2.0 _ 04 _____ 12.8 (2004) _________10.9 (1801) _________-2.8 (2012) _________ -5.0 (1912)

both _05 _____ 11.8 (2004) _________11.1 (1933) _________-2.4 (1963) _________ -6.3 (1830)

leg __ 06 _____ 10.1 (1989&2011) __ 10.3 (1866) ________ -2.5 (1947) _________ -7.3 (1895)

v2.0 _ 06 _____ 10.3 (2011)^_________ 10.2 (1866) ________-2.6 (1947) _________ -7.2 (1895)

leg __ 07 _____ 10.2 (1989) _________ 10.5 (1869) _________-4.7 (1991) ______ -7.2 (1895, 1917)

v2.0 _ 07 _____ 10.3 (1989) _________ 10.4 (1869) _________-4.6 (1991) ______ -7.8 (1895)^

leg __ 08 ______ 9.5 (1948.) ________ 11.4 (1903) _________-3.6 (1991) _________ -8.3 (1895) 

v2.0 _ 08 ______ 9.6 (1948.) ________ 10.7 (1903) _________-3.5 (1991) _________ -8.5 (1895) 

leg __ 09 ______ 9.7 (1941) _________ 11.4 (1831) _________-3.8 (1991) _________ -8.8 (1816)

v2.0 _ 09 ______ 9.7 (1941) _________ 11.4 (1831, 1903) __ -3.8 (1991) _________ -8.8 (1816)

leg __ 10 ______ 9.1 (1998.) _________ 12.0 (1899) _________-4.6 (1986) _________ -6.2 (1895)

v2.0 _ 10 ______ 9.1 (1998.) _________ 12.1 (1899) _________-4.5 (1986) _________ -6.2 (1895)

leg __ 11 _____ 10.5 (1998.) _________ 11.4 (1939) _________-4.2 (1986)* ________ -3.8 (1784)*

v2.0 _ 11 _____ 10.4 (1998.) _________ 11.4 (1939) _________-4.0 (1986)* ________ -3.8 (1784)*

leg __ 12 _____ 11.4 (1998.) __________10.0 (1943)*________-4.0 (1985) __________ -7.7 (1845)

v2.0 _ 12 _____ 11.3 (1998.) __________10.1 (1943)*________ -3.8 (1985) _________ -7.7 (1845)

leg __ 13 _____ 12.0 (1998.) _________ 10.0 (1779) _________-4.1 (1985) _________ -7.0 (1929)

v2.0 _ 13 _____ 11.9 (1998.) _________ 10.0 (1779) _________-4.1 (1985) _________ -6.9 (1929)

leg __ 14 _____ 10.1 (1998.) _________ 10.2 (1794) _________-1.9 (1956,86,94) ____ -7.1 (1929)

v2.0 _ 14 _____ 10.1 (1998.) ________ 10.2 (1794) _________-1.9 (1994)^__________-7.2 (1929)

leg __ 15 _____ 11.2 (1958.)________ 10.8 (1850) _________ -3.4 (1979) __________ -8.0 (1929)

v2.0 _ 15 _____ 13.7 (2024) ________ 11.1 (1958) 10.8 (1850) __-3.4 (1979) _______ -7.4 (1929)

leg __ 16 ______10.3 (2022)________ 10.0 (1928) _________ -3.4 (1969) _________ -7.3 (1855)

v2.0 _ 16 ______10.5 (2022)________ 10.2 (1928) _________ -3.4 (1969) _________ -7.2 (1855)

leg __ 17 ______10.3 (1950)a _______10.7 (1878.)a ________-3.1 (1947) _________ -7.1 (1855)

v2.0 _ 17 _____ 11.3 (2023)a _______11.3 (1878.)a________ -3.1 (1947) _________ -7.0 (1855)

leg __ 18 _____ 11.7 (1945) ________ 11.1 (1911) _________ -2.9 (1947) _________ -3.9 (1855)

v2.0 _ 18 _____ 12.0 (2024) _____11.8 (1945) 10.4 (1911) __ -2.8 (1947) _______ -3.9 (1855)

leg __ 19 _____ 10.2 (1999) ________ 10.6 (1893) _________ -2.2 (1985) _________ -5.0 (1777)

v2.0 _ 19 _____ 10.2 (1999) ________ 10.4 (1893) _________ -2.0 (1985) _________ -5.0 (1777)

leg __ 20 _____ 11.3 (1990) ________ 10.7 (1903) _________-3.3 (1955) _________ -6.6 (1785)

v2.0 _ 20 _____ 11.3 (1990) ________ 10.1 (1903) _________-3.3 (1955) _________ -6.6 (1785)

leg __ 21 _____ 11.2 (2019) ________ 10.6 (1813) _________-4.3 (1986) _________ -4.7 (1810)

v2.0 _ 21 _____ 11.3 (2019) ________ 10.7 (1903) _________-4.2 (1986) _________ -4.7 (1810)

leg __ 22 _____ 10.7 (1953) _________ 9.8 (1897) _________-2.7 (1947) _________ -3.3 (1855)

v2.0 _ 22 _____ 10.6 (1953) _________ 9.6 (1897) _________-2.6 (1947) _________ -3.3 (1855)

leg __ 23 _____ 11.7 (2012) ________ 11.5 (1990)**________-3.5 (1947) _________ -2.1 (1785)

v2.0 _ 23 _____ 11.8 (2012) ________ 11.5 (1990)**________-3.5 (1947) _________ -2.1 (1785)

leg __ 24 _____ 11.3 (2021)^________ 11.4 (1846) _________-6.7 (1947) _________ -2.1 (1814)

v2.0 _ 24 _____ 11.5 (2021)^________ 11.4 (1846) _________-6.6 (1947) _________ -2.1 (1814)

leg __ 25 ______ 9.5 (2011) _________ 11.0 (1922) _________ -5.1 (1947) _________ -2.8 (1814)

v2.0 _ 25 ______ 9.6 (2011) _________ 10.9 (1922) _________ -5.1 (1947) _________ -2.8 (1814)

leg __ 26 _____ 10.3 (1945) _________ 11.2 (1882) _________ -2.3 (1986) _________ -4.7 (1783)

v2.0 _ 26 _____ 10.2 (1945) _________ 11.2 (1882) _________ -2.2 (1986) _________ -4.7 (1783)

both _27 _____ 10.8 (1945) _________ 11.5 (1828.) _________-2.3 (1955) _________ -2.8 (1929)

leg __ 28 _____ 11.4 (1959) ________ 11.1 (1846&1912) ____-3.6 (2018) _________ -3.8 (1785)

v2.0 _ 28 _____ 11.4 (1959) ________ 11.1 (1846) 1912 11.0 __-3.5 (2018) _________ -3.8 (1785)

leg __ 29 _____ 12.0 (1960) ________ 10.7 (1872) ___________+0.4 (1944) ________ -2.4 (1904)

v2.0 _ 29 _____ 12.0 (1960) ________ 10.9 (1912)^__________+0.5 (1944) ________ -2.0 (1904)

_________________________________________________________________________

^ _ 6 Feb, 1989 was 10.2 in v2.0, dropping out of tie with 2011 at 10.3 in v2.0. 1866 fell to 10.2, losing the record. 

^ _7 Feb _ 1917 lost tied cold record with 1895, which went from -7.2 to -7.8 while 1917 went to -6.2. 

* 11 Feb -- in CET legacy, the 1784 record of -3.8 was broken by -4.0 (1985) for one year until the -4.2 of 1986. 

* 11 Feb -- in CET v2.0, the 1784 record of -3.8 was tied in 1985 for one year until the -4.0 of 1986. 

* 12 Feb -- as the previous record also in the recent interval, 9.9 in 1792 was record maximum until 1943. 

^ _14 Feb v2.0 broke tie for recent CET lowest value -1.9 1994, dropping 1956 and 1986 (both -1.8 in v2.0).

a _ 17 Feb _ 11.3 in v2.0 for 2023; tied revised v2.0 value of record set 1878, breaks 1950 which in v2.0 is 10.4.

** 23 Feb -- as the previous record also in the recent interval, 11.3 in 1846 was record maximum until 1990.

^ 24 Feb -- 11.3 in 2021 replaced 10.9 from 1990 as highest recent in legacy, 11.0 (1990) in v2.0. 

^ 29 Feb -- 1912 was 10.5 in CET legacy, 1872 was 10.7 in v2.0.

 

Edited by Roger J Smith
changed 15, 18 Feb new record 2024
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  • Location: Rossland BC Canada
  • Location: Rossland BC Canada

MARCH

Date __ Record Max since 1940 __  previous mark _______ Record Min since 1940 __ previous mark

leg __ 01 ___ 10.3 (1960) _______ 10.7 (1878.)______ -3.8 (2018.)________ -3.5 (1785)

v2.0 _ 01 ___ 10.3 (1960) _______ 10.9 (1878.)______ -3.7 (2018.)________ -3.5 (1785)

leg __ 02 ___10.7 (1999) _______ 11.1 (1777) ______ -3.2 (1965) ________ -2.1 (1804)

v2.0 _ 02 ___10.6 (1999) _______ 11.1 (1777) ______ -3.1 (1965) ________ -2.1 (1804)

leg __ 03 ___ 10.2 (1952) _______ 11.0 (1777) ______ -3.9 (1965) ________ -2.5 (1947)*

v2.0 _ 03 ___ 10.2 (1952) _______ 11.0 (1777) ______ -3.8 (1965) ________ -2.5 (1947)*

leg __ 04 ____ 9.7 (1952) _______ 12.3 (1859) ______ -1.6 (1965) ________ -2.9 (1909)

v2.0 _ 04 ____ 9.7 (1952) _______ 12.3 (1859) ______ -1.5 (1965) ________ -2.8 (1845)^

leg __ 05 ___ 10.3 (1989) _______ 10.9 (1834) ______ -1.0 (1947,70,71) __-2.8 (1786&1909)

v2.0 _ 05 ___ 10.3 (1989) _______ 10.9 (1834) ______ -1.1 (1947) ________ -2.8 (1786)^

leg __ 06 ___ 12.0 (1989) _______ 10.5 (1906) ______ -1.8 (1942) ________ -4.7 (1786)

v2.0 _ 06 ___ 12.0 (1989) _______ 10.2 (1906) ______ -1.8 (1942) ________ -4.7 (1786)

leg __ 07 ___ 10.7 (2014) _______ 10.9 (1875) ______ -3.3 (1947) ________ -2.4 (1886)

v2.0 _ 07 ___ 10.8 (2014) _______ 10.7 (1875) ______ -3.3 (1947) ________ -2.6 (1886)

leg __ 08 ___ 12.2 (2000) _______ 11.7 (1952)**______-1.2 (1947) ________ -3.1 (1786)

v2.0 _ 08 ___ 12.1 (2000) _______ 11.7 (1952)**______-1.1 (1947) ________ -3.1 (1786)

leg __ 09 ___ 12.4 (1948) _______ 12.2 (1826) _______ -1.7 (1958) ________ -3.0 (1917) 

v2.0 _ 09 ___ 12.5 (1948) _______ 12.2 (1826) _______ -1.7 (1958) ________ -2.6 (1917) 

leg __ 10 ___ 11.6 (1957) _______ 11.5 (1881) ______ -1.8 (1958) ________ -2.4 (1883)

v2.0 _ 10 ___ 11.6 (1957) _______ 11.4 (1881) ______ -1.8 (1958) ________ -2.1 (1883)

leg __ 11 ___ 12.6 (1957) _______ 10.8 (1881) ______ -0.8 (1958) ________ -1.9 (1847)

v2.0 _ 11 ___ 12.6 (1957) _______ 10.7 (1881) ______ -0.8 (1958) ________ -1.9 (1847)

leg __ 12 ___ 13.4 (1957) _______ 11.5 (1805) ______ +0.1 (2013) ________ -2.4 (1785)

v2.0 _ 12 ___ 13.4 (1957) _______ 11.5 (1805) ______ +0.2 (2013) ________ -2.4 (1785)

leg __ 13 ___ 12.8 (1991) _______ 12.0 (1854) ______ +0.4 (1956) ________ -6.5 (1845) 

v2.0 _ 13 ___ 12.8 (1991) _______ 11.9 (1854) ______ +0.4 (1956) ________ -6.5 (1845) 

leg __ 14 ___11.1 (1961) _______ 11.5 (1805) ______ +0.7 (1962) ________ -3.7 (1845) 

v2.0 _ 14 ___12.1 (2024) _______ 11.5 (1805) ______ +0.7 (1962) ________ -3.7 (1845) 

leg __ 15 ___ 11.6 (1993) _______ 11.9 (1884) ______ -0.1 (1962) ________ -1.6 (1867) 

v2.0 _ 15 ___ 11.7 (2024)^______ 12.0 (1884) ______ -0.0 (1962) ________ -1.5 (1845, 1867) 

leg __ 16 ___ 13.2 (2004) _______ 12.9 (1884) ______ +0.3 (1979) _______ -3.0 (1845)

v2.0 _ 16 ___ 13.2 (2004) _______ 12.4 (1884) ______ +0.3 (1979) _______ -3.0 (1845)

leg __ 17 ___ 13.2 (2005) _______ 12.9 (1990)***____+0.7 (2018.) _______ -2.2 (1845) 

v2.0 _ 17 ___ 13.1 (2005) _______ 12.9 (1990)***____+0.8 (2018.) _______ -2.2 (1845) 

leg __ 18 ___ 14.1 (1990) _______ 11.5 (1892) ______ -1.1 (2018.) _______ -1.3 (1853)

v2.0 _ 18 ___ 14.2 (1990) _______ 10.9 (1892) ______ -1.0 (2018.) _______ -1.1 (1853)

leg __ 19 ___ 11.5 (2017) _______ 11.8 (1822) ______ +0.8 (1985) _______ -0.9 (1814) 

v2.0 _ 19 ___ 11.6 (2017) _______ 11.8 (1822) ______ +0.8 (1985) _______ -0.9 (1814) 

leg __ 20 ___ 10.9 (1992) _______ 12.3 (1779) ______ -0.5 (1985) _______ -1.6 (1845)

v2.0 _ 20 ___ 12.3 (2024) _______ 12.3 (1779) ______ -0.5 (1985) _______ -1.6 (1845)

leg __ 21 ___ 11.6 (2002) _______ 11.7 (1927&31) ___ +0.1 (1958) _______ -1.6 (1899) 

v2.0 _ 21 ___ 11.7 (2002) _______ 11.7 (1927&31) ___ +0.1 (1958) _______ -1.6 (1899) 

leg __ 22 ___ 11.3 (2005) _______ 12.6 (1903)^ ______ +0.3 (1958) _______ -0.9 (1837) 

v2.0 _ 22 ___ 11.6 (2005) _______ 12.2 (1927)^ ______ +0.4 (1958) _______ -0.9 (1837) 

leg __ 23 ___ 12.1 (1945) _______ 12.1 (1852&1945) _ +0.4 (2013) _______ -0.8 (1837&1899)

v2.0 _ 23 ___ 12.1 1945^ _______ 12.4 (1886)^ _______ +0.5 (2013) _______ -0.8 (1837)^

leg __ 24 ___ 12.5 (2005) _______ 13.4 (1776) ________0.0 (2013) _______ -0.6 (1879) 

v2.0 _ 24 ___ 12.7 (2005) _______ 13.4 (1776) _______+0.1 (2013) _______ -0.6 (1879) 

leg __ 25 ___ 12.0 (1981) _______ 13.9 (1777) _______ +0.8 (2013) _______ -1.3 (1853)

v2.0 _ 25 ___ 12.0 (1981) _______ 13.9 (1777) _______ +0.9 (2013) _______ -1.1 (1853)

leg __ 26 ___ 12.5 (2006) _______ 14.6 (1777) _______ +1.0 (2013) _______ -0.3 (1879&1901)^

v2.0 _ 26 ___ 12.6 (2006) _______ 14.6 (1777) _______ +1.0 (2013) _______ -0.3 (1879)^

leg __ 27 ___ 12.2 (1989) _______ 14.8 (1777)._______ +0.9 (2013) _______ +0.1 (1901)

v2.0 _ 27 ___ 12.1 (1989) _______ 14.8 (1777)._______ +0.9 (2013) _______ -0.1 (1901)^

leg __ 28 ___ 12.6 (1998.)_______ 12..6 (1822&1998) _+0.4 (1952) _______ -0.3 (1785)

v2.0 _ 28 ___ 12.5 (1998) _______ 12..6 (1822)^ ______ +0.4 (1952) _______ -0.3 (1785)

leg __ 29 ___ 13.3 (1968.)_______ 13.4 (1813) ________+0.6 (1952) _______ -0.7 (1785)

v2.0 _ 29 ___ 13.1 (1968.)_______ 13.4 (1813) ________+0.6 (1952) _______ -0.7 (1785)

leg __ 30 ___ 15.1 (2017) _______ 13.4 (1920) ________ +1.3 (1952) ________ 0.0 (1799)

v2.0 _ 30 ___ 15.2 (2017) _______ 13.4 (1920) ________ +1.3 (1952) ________ 0.0 (1799)

leg __ 31 ___ 14.3 (2021) _______ 13.8 (1815) ________ +1.0 (2013) _______ -0.8 (1799)

v2.0 _ 31 ___ 14.4 (2021) _______ 13.8 (1815) ________ +1.1 (2013) _______ -0.8 (1799)

________________________________________________________

* 03 Mar -- as the previous record also in the recent interval, -2.0 in 1890 (leg, v2.0) was record minimum until 1947.

^ 04 Mar _ in v2.0, 1909 loses record to 1845, 1909 incr -2.9 to -1.9, 1845 stayed at -2.8.  

^ 05 Mar _ in v2.0, 1909 loses tied record to 1786, 1909 incr -2.8 to -2.3, 1786 stayed at -2.8.  

**08 Mar -- as the previous record also in the recent interval, 11.5 (leg) in 1875 (11.4 v2.0) was record maximum until 1952.

^ 15 Mar -- previous CET v2.0 recent was 11.5 (1993)

***17 Mar -- as the previous record also in the recent interval, 12.3 (leg) in 1884 (11.7 v2.0) was record maximum until 1990.

^ 21 Mar 1927,1931 tie added 2002 as third tie, when it increased from 11.6 to 11.7 (the others stayed unchanged). 

^ 22 Mar 1927 gained record from 1903 which decreased from 12.6 to 12.0, while 1927 went from 12.3 to 12.2.

^ 23 Mar 1886 new record high, former value 11.4 increased by 1.0 to 12.4;  formerly tied 1852, 1945 each stayed at 12.1).

^ 23 Mar 1899 lost share of record when it was increased from -0.8 to -0.6, 1837 stayed at -0.8 to retain full record status.

^ 26 Mar 1901 lost share of record when it was increased from -0.3 to -0.2, 1879 stayed at -0.3 to retain full record status.

^ 27 Mar 1901 retained record but with the decrease to -0.1 from +0.1, that pushes back the first non-negative record to 30th March, and the first positive value to 4th of April.

^ 28 Mar 1998 lost share of record with 1822, when its value was adjusted down from 12.6 to 12.5 (1822 stayed at 12.6). 

======================================================================

 

APRIL

Date __ Record Max since 1940 __  previous mark _______ Record Min since 1940 __ previous mark
 

leg __ 01 ___ 13.3 (1995) _______ 13.0 (1815) _______ +1.9 (2013) _______ -0.2 (1917)

v2.0 _ 01 ___ 13.4 (1995) _______ 13.0 (1815) _______ +2.0 (2013) ________ 0.0 (1799, 1917)^

leg __ 02 ___ 13.3 (2011) _______ 13.9 (1835) _______ +1.1 (1968) _______ -0.5 (1917)^

v2.0 _ 02 ___ 13.4 (2011) _______ 13.9 (1835) _______ +1.0 (1968) _______ -0.4 (1917)^ 

leg __ 03 ___ 15.0 (1946) _______ 15.0 (1926&1946) _+1.6 (1958) ______ -0.5 (1799)^ 

v2.0 _ 03 ___ 15.0 (1946) _______ 14.7 (1926)^ ______ +1.6 (1958) ______ -0.5 (1799)^ 

leg __ 04 ___ 15.6 (1946) _______ 14.3 (1926) _______ +2.4 (1966) _______ +1.0 (1809&1830) 

v2.0 _ 04 ___ 15.6 (1946) _______ 14.5 (1926) _______ +2.4 (1990) _______ +1.0 (1809&1830) 

leg __ 05 ___ 12.8 (1999&2020) _ 13.3 (1857) ______ +2.4 (1975&1989) __ +0.4 (1911) 

v2.0 _ 05 ___ 12.9 (2020) _______ 13.2 (1857) _______ +2.3 (1989) ________ +0.5 (1911) 

leg __ 06 ___ 15.1 (2011) _______ 13.2 (1827) _______ +1.7 (2008) _______ +0.8 (1911) 

v2.0 _ 06 ___ 15.2 (2011) _______ 13.2 (1827) _______ +1.8 (2008) _______ +0.8 (1911) 

leg __ 07 ___ 12.0 (2011) _______ 14.7 (1859) _______ +1.8 (1986) _______ +1.0 (1839) 

v2.0 _ 07 ___ 12.1 (2011) _______ 14.5 (1859) _______ +1.8 (1986) _______ +1.0 (1839) 

leg __ 08 ___ 13.0 (2020) _______ 12.5 (1798) _______ +2.8 (1970) _______ +2.4 (1780)

v2.0 _ 08 ___ 13.1 (2020) _______ 12.5 (1798) _______ +2.8 (1968,1970) __+2.4 (1780)

leg __ 09 ___ 13.7 (2017) _______ 13.5 (1778) _______ +1.7 (1973) _______ +1.4 (1812)

v2.0 _ 09 ___ 13.8 (2017) _______ 13.5 (1778) _______ +1.8 (1973) _______ +1.4 (1812)

leg __ 10 ___ 14.1 (2020) _______ 13.5 (1928) _______ +1.9 (1978) _______ +0.5 (1837) 

v2.0 _ 10 ___ 14.1 (2020) _______ 13.2 (1928) _______ +1.9 (1978) _______ +0.5 (1837) 

leg __ 11 ___ 14.7 (2020)^______ 16.0 (1869) _______ +1.3 (1978) _______ +1.5 (1837)

v2.0 _ 11 ___ 14.8 (2020)^______ 15.9 (1869) _______ +1.3 (1978) _______ +1.5 (1837)

leg __ 12 ___ 14.2 (1991) _______ 14.4 (1939) _______ +3.8 (1998) _______ +1.1 (1879) 

v2.0 _ 12 ___ 14.2 (1991) _______ 14.5 (1939) _______ +3.8 (1998) _______ +1.1 (1879) 

leg __ 13 ___ 14.0 (1959) _______ 14.6 (1792) _______ +3.2 (1978) _______ +1.1 (1816) 

v2.0 _ 13 ___ 14.1 (1959) _______ 14.6 (1792) _______ +3.2 (1978) _______ +1.1 (1816) 

leg __ 14 ___ 14.2 (2007) _______ 16.1 (1869) _______ +0.5 (1966) _______ +0.6 (1816)

v2.0 _ 14 ___ 14.3 (2007) _______ 15.9 (1869) _______ +0.5 (1966) _______ +0.6 (1816)

leg __ 15 ___ 16.3 (1945) _______ 15.8 (1779) _______ +1.4 (1966) _______ +1.5 (1892)

v2.0 _ 15 ___ 16.3 (1945) _______ 15.8 (1779) _______ +1.5 (1966) _______ +1.9 (1892)

leg __ 16 ___ 17.0 (1945) _______ 13.8 (1865) _______ +2.7 (1966) _______ +2.0 (1892)

v2.0 _ 16 ___ 17.1 (1945) _______ 13.8 (1865) _______ +2.7 (1966) _______ +2.2 (1837,1892)^

leg __ 17 ___ 14.8 (2003) _______ 14.9 (1865) _______ +3.6 (1966) _______ +2.1 (1793&1812) 

v2.0 _17 ___ 14.8 (2003) _______ 14.8 (1865, 2003) _ +3.6 (1966) _______+2.1 (1793&1812) 

leg __ 18 ___ 17.0 (2018.) _______ 14.5 (1945)*______ +3.9 (1983) _______ +1.7 (1807)

v2.0 _ 18 ___ 17.0 (2018.) _______ 14.6 (1945)*______ +3.9 (1983) _______ +1.7 (1807)

leg __ 19 ___ 17.6 (2018.)_______ 15.4 (1870) _______ +3.5 (1995) _______ -0.2 (1772) 

v2.0 _ 19 ___ 17.6 (2018.)_______ 15.3 (1870) _______ +3.6 (1995) _______ -0.2 (1772) 

leg __ 20 ___ 14.8 (1945) _______ 16.6 (1893) _______ +3.4 (1991) _______ +2.3 (1849)

v2.0 _ 20 ___ 14.8 (1945) _______ 16.7 (1893) _______ +3.4 (1991) _______ +2.3 (1849)

leg __ 21 ___ 15.5 (1968) _______ 16.1 (1893) _______ +4.7 (1991) _______ +2.4 (1936)

v2.0 _ 21 ___ 15.5 (2011)^_______15.8 (1893) _______ +4.6 (1991) _______ +2.4 (1936)

leg __ 22 ___ 15.4 (2011) _______ 14.3 (1778.)_______ +5.9 (1967&1981)__+3.4 (1778.) 

v2.0 _ 22 ___ 15.4 (2011) _______ 14.3 (1778.)_______ +5.9 (1967)^ ______ +3.4 (1778.) 

leg __ 23 ___ 15.8 (2011) _______ 15.9 (1874) _______ +3.4 (1981) _______ +2.6 (1908.) 

v2.0 _ 23 ___ 15.9 (2011) _______ 15.7 (1874)^_______+3.4 (1981) _______ +2.5 (1908.) 

leg __ 24 ___ 15.3 (2007) _______ 14.8 (1901) _______ +3.1 (1981) _______ +0.5 (1908.)

v2.0 _ 24 ___ 15.4 (2007) _______ 14.7 (1901) _______ +3.5 (1981) _______ +0.6 (1908.)

leg __ 25 ___ 14.6 (2007) _______ 15.9 (1821) _______ +3.2 (1950) _______ +1.8 (1908.)

v2.0 _ 25 ___ 14.7 (2007) _______ 15.9 (1821) _______ +3.2 (1950) _______ +1.8 (1908.)

leg __ 26 ___ 14.5 (1975) _______ 16.1 (1928.)^______ +3.3 (1981) _______ +3.8 (1857&1906)

v2.0 _ 26 ___ 14.5 (1975) _______ 15.9 (1821.)^______ +3.4 (1981) _______+3.9 (1857)^

leg __ 27 ___ 14.2 (1994) _______ 16.5 (1866) _______ +4.5 (2016) _______ +2.7 (1919)

v2.0 _ 27 ___ 14.1 (1994) _______ 16.3 (1866) _______ +4.6 (2016) _______ +2.8 (1919)

leg __ 28 ___ 15.5 (1994) _______ 16.9 (1775) _______ +3.7 (1941) _______ +3.0 (1826)

v2.0 _ 28 ___ 15.4 (1994) _______ 16.9 (1775) _______ +3.7 (1941)^_______+3.0 (1826)

both _ 29 ___ 15.2 (1987) _______ 19.7 (1775) _______ +4.2 (1945) _______ +0.7 (1856)

leg __ 30 ___ 14.5 (1958&2005) __ 17.4 (1775) ______+2.6 (1945) _______ +3.7 (1876)

v2.0 _ 30 ___ 14.5 (1958&2005) __ 17.4 (1775) ______+2.7 (1945) _______ +3.9 (1876)

_______________________________________________________

 

^ 1 Apr 1917 became tied with 1799 as its previous value of -0.2 was adjusted to 0.0 (which 1799 had before).

^ 2 Apr 1917 lost the status of tied record monthly low (-0.5) when it was adjusted to -0.4 (daily record retained).

^ 3 Apr 1926 lost share of record with 1946, when its value was adjusted down from 15.0 to 14.7 (1946 stayed at 15.0)

^ 3 Apr 1799 now sole owner of the April monthly record of -0.5 (formerly tied with 2 Apr 1917). 

^11 Apr -- new recent mark of 14.7 (2020) (14.8 v2.0) edged out 14.6 (1981) (both). Record stayed with 1869.

^ 15 Apr 1892 was also 1.5 in legacy (where 1966 was 1.4) but increased to 1.9 to stay out of the record tie. 

^ 16 Apr 1892 fell back into a tie with 1837 when it was adjusted up from 2.0 to 2.2 (1837 stayed at 2.2). 

^ 17 Apr 2003 gained a tie with 1865, as 1865 was adjusted down from 14.9 to 14.8 (2003 remained at 14.8).

^ 18 Apr -- as the previous record also in the recent interval, 13.7 in 1783 was record maximum until 1945.

^ 21 Apr -- 1968 lost "recent" mark to 2011 (15.4 in CET legacy), falling to 14.9 in v2.0. Record remained with 1893 (despite falling 0.3) 16.1 to 15.8).

^ 22 Apr -- 1981 (6.0 in v2.0) lost share of "recent" lowest CET to 1967 (stayed 5.9 in v2.0).

^ 23 Apr 1874 lost record to 2011. 1874 was adjusted down 14.9 to 14.7, 2011 went up from 14.8 to 14.9. 

^ 26 Apr 1821 gained a record (15.9) when 1928 was adjusted down from 16.1 to 15.7. 

^ 26 Apr 1908 lost s are of previous-era record, after being adjusted to 4.4; 1857 was adjusted less to 3.9. 1981 set overall record.

^ 28 Apr 2016 also 4.0. 

Edited by Roger J Smith
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