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Otter Valley Weather Extremes (2005 - 2014)

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

Otter Valley weather extremes for 2014 and station records

Previous annual extremes 2009 2010 2011 2012 2013
    2014    Station Record
Temperature highs    29.1°C 23rd July   30.8°C 19th July 2006
Temperature lows   -5.6°C 29th December   -9.8°C 26th December 2010
Temperature lowest high   5.2°C 30th January   -0.9°C 25th December 2010
Temperature highest low   17.3°C 18th July   18.6°C 15th August 2012
             
 Warmest monthly mean    18.6°C July    20.1°C  July 2006
 Coldest monthly mean    6.6°C  December    0.7°C  December 2010
             
 Highest monthly anomaly    +1.8°C April    +4.5°C  April 2011
 Lowest monthly anomaly    -0.8°C  August    -5.6°C  December 2010
             
Grass temp lows   -8.7°C 29th December   -10.8°C 7th January 2010
             
Rainfall in 15 minutes   - mm -   10.4 mm 30th October 2008
Rainfall in 1 hour   - mm -   24.1 mm 12th June 2006
Rainfall in 24 hours   26.4 mm 16th January   70.8 mm 30th October 2008
Rainfall in 1 month   194.9 mm January   188.9 mm November 2009
Rainfall in 1 year   1036 mm 2014   1370 mm 2012
             
Driest Month   9.8 mm September   9.8 mm September 2014
Driest Year   1036 mm 2014   712 mm 2011
             
Max Sunshine in 1 day   15.6 Hours 20th June   15.8 hours 25th June 2010
Max Sunshine in 1 month   272.1 Hours July   328.2 hours July 2013
Max Sunshine in 1 year   1960 Hours 2014   2019 hours 2010
Dullest month   76.4 Hours January    53.4 Hours  February 2011
             
UV Index high   10.0 14th July   10.0 14th July 2014
Solar irradiance high   1237 W/m² 3rd June   1247 W/m² 14th July 2012
Solar energy high   32.4 MJ/m² 12th June   33.1 MJ/m² 19th June 2012
             
Wind high   56 mph 14th February   58 mph 10th March 2008
Windiest day   356 miles 5th February   366 miles 21st March 2008
Windiest month   4844 miles February   4844 miles February 2014
Calmest day   11 miles 1st March   1 mile 11th December 2008
Calmest month   1293 miles September   1293 miles September 2014
             
Pressure highs   1042.6 hPa 29th December   1042.6 hPa 29th December 2014
Pressure lows   970.3 hPa 14th February   961.1 hPa 10th March 2008
             
Dewpoint high   20.6°C 23rd July   20.9°C 19th August 2012
Dewpoint low   -6.4°C 29th December   -14.3°C 26th December 2010
Relative humidity low   45% 14th April   27% 9th July 2013
             
30 cm soil temp highs   21.3°C 27th July   21.3°C 27th July 2014
30 cm soil temp lows   6.6°C 29th December   0.3°C 8th January 2009
100 cm soil temp highs   19.6°C 30th July   19.6°C 30th July 2014
100 cm soil temp lows   9.3°C 15th February   4.0°C 10th January 2009
             
Highest snow depth   0 cm No snow lying    28 cm 20th December 2010
Longest snow cover1   0 days No snow lying    10 days 17th - 26th Dec 2010
Least snow days in a year2          0 days 2007, 2011 & 2012
Most snow days in a year2   0 days No snow lying    4 days 2009 & 2010
             
Sea surface temp highs   20.8°C 25th July   22.5°C 10th August 2003
Sea surface temp lows   8.8°C 6th February   5.4°C 27th December 2010
             
Frostiest day3   17.5 hours 29th December   24 hours 25th December 2010
Frostiest month3   87 hours December   373 hours December 2010
Thunder days in a month4   6 Days July   6 days July 2014
Thunder days in a year4   23 Days 2014   23 days 2014
 

Updated on the 1st January 2015.
Weather extremes for 2015 will be posted at the beginning of March.

 

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.

Webcam Gallery World Weather Month So Far Year So Far Met Office 5 Day Sea Temp UV Light Recording Data Humidity Calcs