Annual Statistics For 2011

[Andy Bown]

Please add here your stats for the year of 2011.

Aspects that stand out for me in Warminster, Wiltshire ...

- The driest year since I began measuring rainfall in 2005 despite there being 203 days with precipitation.

- The lack of wintry precipitation ; just 11 days!

- The lack of hard frost ; the lowest for the year being -3.6c on 21 Jan!

- The mean temperatures for April, May, June, July, August and September only varying by 3.38c!

Average max = 15.21c (Highest = 29.9c on 26 June)

Average min = 8.22c (Lowest = -3.6c on 21 Jan)

Mean = 11.71c

Dry days = 162

Precipitation days = 203 (of which wintry = 11)

Rainfall = 862.5mm

[Red Raven]

Here's mine - easier to look at the web page - http://www.lortonwea...alysis-2011.htm

Edited January 1, 2012 by Red Raven

[johnholmes]

Values in brackets is the long term average for this area

Mean temp=11.9C(9.6)

Avge Max=15.8C(13.4)

Avge Min=8.0C(5.8C)

Absolute Max=32.9C 27 June

Lowest day max=3.2C on January 3rd

Lowest Min=-3.7C 21 January

Highest Night Min=17.2C 27 June

No of days with rain of any amount=183 (160)

Days of snow=4 with 1 day of lying snow at 0900 clock time (26 and 11 respectively)

Air frosts=19 (49), and ground frost=42(82)

Days of fog at 0900 clock time=9(26) and thunder=5(11)

5.8/13.4/9.6

Edited January 1, 2012 by johnholmes

[SP1986]

Mean Maximum: 15.07C

Mean Minimum: 8.1C

Overall Mean: 11.58C

Monthly Rainfall total: 636.6mm

Max rainfall in one day: 14.1mm (9th December)

Highest daily maximum temperature: 27.8C (26th June)

Lowest daily maximum temperature: 1.3C (29th January)

Highest daily minimum temperature: 18.4C (10th September)

Lowest daily minimum temperature: -4.9C (29th January)

Days with Ground Frost: 27

Days with Air Frost: 12

Days of falling snow: 2

Days of lying snow: 1

[Robbie Garrett]

Not manys statistics but what amazes me the most is the following for Heathrow Airport

June 27th 2011 - 31.2C

October 1st 2011 - 28.8C

Most Consecutive days above 25*C = September 26th - 3rd October (above 20*C 10 days Sept 24th 2011-3rd Oct 2011) - Summer only had 2 days above 25*C! Autumn had 10! LOL

[Osbourne One-Nil]

Ended up with a mean temperature of 9.0º, making it the joint second warmest year with 2006, and beaten only by 2007. Massive increase on last year's 6.7º.

1331.2mm of rain fell, with the wettest month being February (204mm) and the driest being March (49.2mm).

The other salient points can be found on my website - www.greatasby.co.uk

[TonyH]

Mean temperature: 11.0c so very mild

Total rainfall: 1186mm (95% approx)

Other notable aspects:

Snow lying only 1 day

Thunder on just 2 days

And for the real anoraks see attached!

weather table 2011.pdf Llanwnnen temps 2011.pdf Llanwnnen Rainfall 2011.pdf

Edited January 2, 2012 by TonyH

[Aaron]

Thought 2011 was cloudy? Well it wasn't.

Thought 2011 was dry, but also wet? You were correct.

Thought 2011 was mild? You were right.

[Zenarcher]

Castlebay Isle of Barra 2011 Weather Records

Highest Temperature 18.6c July

Lowest Temperature 0.8c December

Highest Humidity 100% February/September/December

Lowest Humidity 44% April

Highest Wind Gust 95mph December

Highest Pressure 1042.2mb January

Lowest Pressure 948.1mb December

Lowest Wind Chill -17c January

Highest Dewpoint 15.4c September

Lowest Dewpoint -4.4c January

Year Rainfall Total 1145mm

Summary

Overall a pretty average year but April and November were warmer than normal also we had more rain than average during spring.

Edited January 6, 2012 by weathermaster

[Styx]

Australia had a marginally cooler than average year (-0.1 below average ) making it the first negative anomoly year since 2001 and only the third negative anomoly year since 1985.

It was down to a very active La Nina year with a more intense and prolonged monsoon season, supressing temperatures markedly in tropical, the subtropical east and desert Australia. The southern half of Australia however, was milder than average, and SW Western Australia had record warmth.

The annual rainfall from a widespread network of rainfall site observations was the 3rd highest on record ( since 1900 ). It was back to back wet years for Australia.

Australia extremes 2011

Highest maximum: 49 ( Roebourne, Western Australia )

Lowest maximum: -5 ( Thredbo, New South Wales )

Highest minimum: 32 ( Thargomindah airport, Queensland )

Lowest minimum: -16 ( Charlottes Pass, New South Wales )

Highest rainfall: 10078mm ( Belienden Ker Top, Queensland )

Lowest rainfall: 122mm ( Bond Springs Turnoff, Northern Territory )

Highest daily rainfall: 477mm ( Mornington Island, Queensland )

Highest wind speed: 128mi/hr ( Willis island, Queensland ) Edge of cyclone.

Hobart, Tasmania, Australia - State capital, sealevel

Mean max: 17.5 ( +0.5 )

Mean min: 9.1 ( +0.5 )

Highest maximum: 34 ( Record is 41 )

Lowest maximum: 7 ( Record is 4 )

Highest minimum: 19 ( Record is 25 )

Lowest minimum: 1 ( Recod is -3 )

Rainfall: 691mm ( Average 617mm )

Highest daily total: 76mm

[Aaron]

Castlebay Isle of Barra 2011 Weather Records

Highest Temperature 18.6c July

Lowest Temperature 0.8c December

Highest Humidity 100% February/September/December

Lowest Humidity 44% April

Highest Wind Gust 95mph December

Highest Pressure 1042.2mb January

Lowest Pressure 948.1mb December

Lowest Wind Chill -17c January

Highest Dewpoint 15.4c September

Lowest Dewpoint -4.4c January

Year Rainfall Total 1145mm

Summary

Overall a pretty average year but April and November were warmer than normal also we had more rain than average during spring.

An air-frost free year? Yikes, and I thought Scotland was cold.

[jean91]

Here is a chart for anomaly ( reference 1971-2000) for Paris Montsouris as usual all stats before 1950 are to be taken with care.But then it gives a very stunning chart.

We are at a 1.9c anomaly for Paris- Montsouris Station for 2011.:

[Terminal Moraine]

2011 was the warmest year here since local records began in 1963, fractionally warmer than 2006 due to a higher mean max'.

It was the driest year since 1991 and 2010 and 2011 have been the driest consecutive years since 1995/96.

But for the wet December it would have been the driest year since 1975 and this was the case in the local valleys.

December also rescued the snowfall statistics. Up to the end of November it was the least snowy year on record but the frequent light snowfalls in December meant that 1992, 2002 and 2007 all had fewer mornings with lying snow and 2002 and 2007 had fewer days with snow or sleet falling.

Only 1997, 2002 and 2007 had fewer air frosts

Temperature

Mean max'....... 12.5c ( +1.2c )

Mean min'........ 6.2c ( +0.7c )

Highest max'.... 26.5c ( June 27th

Lowest max'..... -0.3c ( Jan' 3rd, 27th )

Lowest min' ...... -4.4c ( Jan' 21st )

Highest min'...... 16.1c ( June 27th )

Lowest Grass min'...-7.9c ( Jan 4th )

Rainfall

Annual total...........850.8mm ( 79% )

Wettest day.............37.5 mm ( Feb' 5th )

Rain days ( 0.2mm or more )....194

Wet days..( 1.0 mm or more )....139

Sunshine

Annual total...........1207.00 hrs ( 89% )

Sunniest day.............15.09 hrs ( June 3rd )

Sunless days.................67

Days with Air frost..........31

Days with Ground frost...61

Days with Snow or sleet falling.....31

Days with Snow lying at 0900...........11

Days with Thunder............11

Days with Hail....................17

Days with Fog at any time....104

Days with Fog at 0900........47

Mean wind speed at 0900....13.7 mph

Highest Gust..........................72 mph ( Dec' 8th )

Days with Gale.......................15 ( mean speed 39 mph or more over 10 minutes ).