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Otter Valley Weather Extremes (2005 - 2011)

My beautiful wife stood on Mushroom Rock on a warm and humid September day with dramatic skies.

Otter Valley weather extremes for 2011

Previous annual extremes 2009 2010
    2011    Station Record
Temperature highs   27.7°C 3rd August   30.8°C 19th July 2006
Temperature lows   -6.7°C 31st January   -9.8°C 26th December 2010
Temperature lowest high   0.7°C 29th January   -0.9°C 25th December 2010
Temperature highest low   17.4°C 4th August   18.3°C 21st August 2010
             
 Warmest monthly mean    16.5°C  July    20.1°C  July 2006
 Coldest monthly mean    4.6°C  January    0.7°C  December 2010
             
 Highest monthly anomaly    +4.5°C  April    +4.5°C  April 2011
 Lowest monthly anomaly    -1.0°C  January    -5.6°C  December 2010
             
Grass temp lows   -9.5°C 21st January   -15.8°C 7th January 2010
             
Rainfall in 15 minutes   3.6 mm 21:45 6th May   10.4 mm 30th October 2008
Rainfall in 1 hour   6.2 mm 21:00 6th May   24.1 mm 12th June 2006
Rainfall in 24 hours   24.2 mm 4th August   70.8 mm 30th October 2008
Rainfall in 1 month   92.3 mm January   188.9 mm November 2009
Rainfall in 1 year   712 mm Jan - Dec   1022.8 mm 2008
             
Driest Month   20.1 mm April   17.8 mm April 2007
Driest Year         712 mm 2011
             
Max Sunshine in 1 day   15.7 hours 3rd June   15.8 hours 25th June 2010
Max Sunshine in 1 month   246 hours April   316.3 hours June 2010
Max Sunshine in 1 year   1691 hours Jan - Dec   2019 hours 2010
Dullest month    53.4 hours February    53.4 Hours  February 2011
UV Index high   9 6th July   9 6th July 2011
             
Wind high   37 mph 8th January   58 mph 10th March 2008
Windiest day   272 miles 4th February   366 miles 21st March 2008
Windiest month   4364 miles May   4601 miles March 2008
Calmest day   18 miles 19th January   1 mile 11th December 2008
Calmest month   2476 miles July   1912 miles October 2008
             
Pressure highs   1040.2 hPa 21st January   1041.6 hPa 26th January 2010
Pressure lows   984.4 hPa 15th February   961.1 hPa 10th March 2008
             
Dewpoint high   20.2°C 29th September   20.2°C 29th September 2011
Dewpoint low   -9.3°C 21st January   -14.3°C 26th December 2010
Relative humidity low   35% 18th April   29% 21st March 2007
             
30 cm soil temp highs   19.5°C 3rd August   20.2°C 24th July 2009
30 cm soil temp lows   2.5°C 1st January   0.3°C 8th January 2009
100 cm soil temp highs   18.8°C 5th August   18.8°C 5th August 2011
100 cm soil temp lows   5.1°C 1st January   4.0°C 10th January 2009
             
Highest snow depth   0 cm No snow falling    28 cm 20th December 2010
Longest snow cover1   0 days No snow falling    10 days 17th - 26th Dec 2010
Least snow days in a year2   0 days So far this year    0 days 2007
Most snow days in a year2   0 days So far this year    4 days 2009 & 2010
             
Sea surface temp highs   19.6°C 2nd August   22.5°C 10th August 2003
Sea surface temp lows   6.2°C 1st January   5.4°C 27th December 2010
             
Frostiest day3   19.5 hours 29th January   24 hours 25th December 2010
Frostiest month3   144 hours January   373 hours December 2010
Thunder days in a month4   3 days May   4 days July 2006
Thunder days in a year4   7 days So far this year   16 days 2006
 

Records are updated at the end of each month

 

Most records go back to May 2005, which is when this station started recording weather for the Otter Valley. Sea surface temperature records are for Lyme Bay and date from early 2003. Sunshine recording was added late 2006 and started collecting data in 2007. Soil and grass temperature readings started in 2007. UV Index recording started in January 2011. 1Longest continuous snow cover of at least 50% of the ground. 2Snow days are defined as snow seen falling. 3Frostiest days are defined as the time duration with temperatures below 0.0°C. 4Thunder days are defined as days when thunder is heard.

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