September Weather Statistics

[Osbourne One-Nil]

For Great Asby; a mild, dry month.

Average daily maximum; 16.9º

Highest daily maximum; 22.5º (2nd)

Lowest daily maximum; 11.5º (24th)

Average daily minimum; 7.8º

Highest daily minimum; 12.9º (6th)

Lowest daily minimum; 1.3º (17th)

Air frosts; nil

Ground frosts; two

Mean monthly temperature; 12.4º (13yr mean; 11.6º)

Total rainfall; 69.2mm

Wettest day; 10.6mm (10th)

No. of wet days (0.2mm or above); eighteen.

Highest wind gust; 39mph (14th)

[TonyH]

September 2010 Llanwnnen, Ceredigion

Summary: Wet and changeable; near average temperatures

The wettest September recorded hereabouts (srb 2002), and the most days of heavy rain (over 10mm) of any month so far this year. A good variety of temperatures for a change, after the lack of extremes throughout Summer, with a mix of warm and cool spells. Some notably cold and frosty nights towards the end.

1st- 5th: Warm and mostly dry. Sunny 1-3rd.

6th- 16th: Very unsettled, spells of rain, heavy at times. 24mm on 6th. Near normal temperatures, but rather cool from 13th. Sunny spells at times too.

17th- 19th: Mostly dry with sunny intervals. Cool to average temperatures, with a ground frost 18th.

20th- 21st: Mostly dry and warm with sunny spells.

22nd-23rd: Rain/ showers, some very heavy but still quite warm with and also sunny spells.

24th- 27th: Cool and dry with sunny periods. Notably cold by night, 2 air frosts, and the lowest reading I have had in September of -1.8c on the 26th.

28th- 30th: Dry and rather warm 28th, but then unsettled with rain and showers to end the month. The month’s only incident of fog occurred on the last morning.

Statistics

Total rainfall: 153mm

Wettest day: 24.3mm 6th

Rain days >0.2mm: 20

Wet days >1.0mm: 10

Days of heavy rain >10mm: 8

Mean temperature: 13.4c

Mean Max: 18.2c

Mean Min: 8.7c

High max: 22.9c 1st

Low Max: 13.3c 25th

High min: 15.0c 6th

Low min: -1.8c 26th

Air frost: 2

Ground frost: 3

Mean RH: 86%

High RH: 100% various

Low RH: 49% 2nd

Predominant wind directions: SSE

Mean wind speed: 0.9mph

Mean pressure: 1014mbar

Max pressure: 1027mbar 12th

Min pressure: 996mbar 7th

Days with:

Hail: 0

Gale: 0

Thunder: 0

Fog: 1

Fog at 0900: 0

Note that some of maxima have been slightly adjusted downwards by 1c as to counter siting effects and which is not shown on the graphs.

Edited October 1, 2010 by Tonyh

[NorthernRab]

I didn't manage to log weather statistics this month, although I will say that it's quite interesting (although not that unusual) that Tulloch Bridge in the Scottish Highlands reached -4.2'C this early in the game.

[Optimus Prime]

A rather cool month. A continuation of the rather average septembers since 2006.

Mean Max 19.0c (+0.1c)

Mean Min 10.0c (-0.6c)

Mean 14.5c (-0.3c)

Highest temperature 22.7c (9th)

Lowest 4.6c (18th)

[RichardR]

Buxton, Derbyshire, England

Unofficial September 2010 Climatic Records

Latitude 53*N Longitude 1.5*W Elevation 338m/1110ft AMSL

Valid 1st- 30th September, 2010

Mean Maximum: 15.1°C / 59.2°F

Mean Minimum: 8.7°C / 47.7°F

Mean Temperature: 11.9°C / 53.4°F

Highest Temperature: 20.4°C / 68.7°F (1st)

Lowest Temperature: 2.4°C / 36.3°F (25th)

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

Lowest Maximum: 10.3°C / 50.5°F (24th)

Highest Minimum: 13.9°C / 57.0°F (11th)

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

Precipitation: 130mm / 5.12"

Days with rain >1mm: 12

Days with rain/drizzle: 18

Most in one day: 21mm / 0.83" (6th)

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

Mean Pressure: 1014.6mb

Max Pressure: 1024mb (3rd)

Min Pressure: 1000mb (7th)

Average Maximum Wind Gust: 29.5mph

Maximum Wind Gust: 64mph (15th)

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

Sunshine hours: 95.4

Most in one day: 10.58 (1st)

Average per day: 3.18 hours

Sunless days: 5

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

Days with:

Sleet/Snow: 0

Fog: 3

Hail/Ice Pellets: 1 (23rd)

Thunderstorm: 2 (7th, 23rd)

Nights below freezing: 0

Month synopsis:

Near average temperatures.

However, it was the coldest september in my personal memory.

It was also the dullest in my personal memory.

Edited October 1, 2010 by RichardR

[cuckoo]

Buxton, Derbyshire, England

Unofficial August 2010 Climatic Records

Latitude 53*N Longitude 1.5*W Elevation 338m/1110ft AMSL

Valid 1st- 31st August, 2010

Mean Maximum: 15.1°C / 59.2°F

Mean Minimum: 8.7°C / 47.7°F

Mean Temperature: 11.9°C / 53.4°F

Highest Temperature: 20.4°C / 68.7°F (1st)

Lowest Temperature: 2.4°C / 36.3°F (25th)

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

Lowest Maximum: 10.3°C / 50.5°F (24th)

Highest Minimum: 13.9°C / 57.0°F (11th)

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

Precipitation: 130mm / 5.12"

Days with rain >1mm: 12

Days with rain/drizzle: 18

Most in one day: 21mm / 0.83" (6th)

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

Mean Pressure: 1014.6mb

Max Pressure: 1024mb (3rd)

Min Pressure: 1000mb (7th)

Average Maximum Wind Gust: 29.5mph

Maximum Wind Gust: 64mph (15th)

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

Sunshine hours: 95.4

Most in one day: 10.58 (1st)

Average per day: 3.18 hours

Sunless days: 5

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

Days with:

Sleet/Snow: 0

Fog: 3

Hail/Ice Pellets: 1 (23rd)

Thunderstorm: 2 (7th, 23rd)

Nights below freezing: 0

Month synopsis:

Near average temperatures.

However, it was the coldest september in my personal memory.

It was also the dullest in my personal memory.

You have August above the data Richard.

[RichardR]

You have August above the data Richard.

LOL duly noted and changed.

[Huelva-Spain]

Huelva (Sw Spain):

Average daily maximum; 31.7ºc

Highest daily maximum; 38.2ºc(4th)

Lowest daily maximum; 22.8ºc(23th)

Average daily minimum; 16.4ºc

Highest daily minimum; 22.0ºc (15th and 16th)

Lowest daily minimum; 10.8ºc (27th)

Month Average: 24.0ºc

More information:

www.MeteoHuelva.Blogspot.com

See you soon, friends

[reef]

Hedon, East Yorkshire.

September 2010

Warmest Max: 21.8°C (on 11/09/10)

Coldest Max: 13.1°C (on 25/09/10)

Warmest Min: 14.4°C (on 11/09/10)

Coldest Min: 6.7°C (on 25/09/10)

Average Max: 17.7°C (-0.5°C Below 1971-2000 Average)

Average Min: 11.0°C (+0.6°C Above 1971-2000 Average)

Overall Average: 14.4°C (+0.1°C Above 1971-2000 Average)

Rain: 60.8mm (117% Of Normal)

Wettest Day: 7th (15.2mm)

Air Frosts: 0

Sleet/Snow Falling: 0 days

Snow lying at 0900: 0 days

Dry Days: 9

Wet Days: 21

Days With Rain >1.0mm: 11

Thunderstorms: 0

Year 2010 So Far (Jan - Sep)

Warmest Max: 28.7°C (on 10/07/10)

Coldest Max: 0.4°C (on 04/01/10)

Warmest Min: 18.3°C (on 02/07/10)

Coldest Min: -4.5°C (on 08/03/10)

Average Max: 14.0°C (-0.5°C Below 1971-2000 Average)

Average Min: 7.0°C (Equal to 1971-2000 Average)

Overall Average: 10.5°C (-0.2°C Below Running 1971-2000 Average)

Rain: 381.8mm (93% Of Normal)

Wettest Day: 22/01/10 (17.5mm)

Air Frosts: 35

Sleet/Snow Falling: 25 days

Snow lying at 0900: 13 days

Dry Days: 112

Wet Days: 159

Days With Rain >1.0mm: 93

Thunderstorms: 3

A very average month, but still the coolest September since 2002. At 117% of normal rainfall, it was the first month to be wetter than average since February.

The first few days were dry and sunny with average temperatures by day but cooler nights. It then turned much wetter in the second week with rain falling on every day from the 6th-16th. It was much warmer however, with temperatures into the low 20s on the 9th, 10th and 11th. The warmest day was the 11th, when it reached 21.8C. Sunshine levels were at a premium though, due to the airmass being of a tropical maritime origin.

It then turned much cooler on the 17th, as flow turned to the north-west. Single-figure minima made a return and the 17th was a cool day, with a maximum of just 13.8°C. It became briefly warmer again on 21st and 22nd, reaching 21.1°C and 21.7°C before cooling down once again. At first the flow was northerly, giving cool days and further single figure minima but then the wind turned to the north-east, providing four days of overcast skies, persistent rain and temperatures between 10-14°C by day and night. The sunshine returned for the final two days of the month.