Daily Report for 14th December 2009

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 0.5 °C (-2.7) 05:24 4.0 °C (+0.6) 8.1 °C (+4.9), 2015 -0.9 °C (-4.1), 2010
Maximum Temperature 4.7 °C (-3.3) 14:54 8.8 °C (+0.4) 14.6 °C (+6.6), 2016 3.8 °C (-4.2), 2018
Mean Temperature 2.8 °C (-3.0) 6.5 °C (+0.5) 10.5 °C, 2016 2.7 °C, 2018
Minimum Humidity 89% 16:01 82% 89%, 2009 61%, 2019
Maximum Humidity 98% 09:42 97% 98%, 2009 80%, 2011
Mean Humidity 95% 91% 95%, 2009 75%, 2011
Minimum Pressure 1019 hPa 21:07 1008 hPa 1027 hPa, 2010 975 hPa, 2012
Maximum Pressure 1025 hPa 03:22 1016 hPa 1037 hPa, 2010 993 hPa, 2017
Mean Pressure 1022 hPa 1012 hPa 1032 hPa, 2010 985 hPa, 2012
Mean Wind Speed 1.5 mph (-3.6) 4.5 mph (-0.6) 8.5 mph, 2019 1.5 mph, 2009
Maximum Wind Speed 4.3 mph 10.1 mph 23.4 mph, 2019 4.3 mph, 2009
Maximum Gust 6.2 mph 00:16 15.2 mph 42.6 mph, 2019 6.2 mph, 2009
Mean Wind Direction NE
Rainfall 0.3 mm 33.5 mm (132%) 11.0 mm, 2019
Maximum Hourly Rain 0.3 mm 19:38 5.9 mm, 2019
Maximum 10-min Rain n/a 19:38 2.6, 2019
Maximum Rain Rate n/a 26, 2019
Minimum Dew Point -0.2 °C 04:07 2.6 °C 6.7 °C, 2015 -3.6 °C, 2010
Maximum Dew Point 4.1 °C 13:10 7.8 °C 10.1 °C, 2016 0.0 °C, 2018
Mean Dew Point 2.0 °C 5.1 °C 7.3 °C, 2015 -1.1 °C, 2018
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 0.5 °C 5.0 °C 8.1 °C, 2015 0.4 °C, 2012
Day Maximum (09-21) 4.7 °C 8.5 °C 14.6 °C, 2016 3.8 °C, 2018
Max 10m Temp Rise n/a 16:21 0.4 °C 1, 2016 0.2, 2010
Max 1hr Temp Rise n/a 17:11 1.0 °C 2.6, 2016 0.6, 2010
Max 1hr Hum Rise n/a 04:39 4% 9, 2013 2, 2015
Max 10m Temp Fall n/a 16:11 0.3 °C 0.5, 2019 0.1, 2014
Max 1hr Temp Fall n/a 16:11 0.9 °C 1.4, 2010 0.2, 2014
Max 1hr Hum Fall n/a 14:03 6% 13, 2019 2, 2015
Max 10m Wind Speed 3.4 mph 02:28 7.9 mph 19.3 mph, 2019 3.4 mph, 2009
Minimum Feels-like -0.9 °C 02:09 1.4 °C 5.7 °C, 2015 -3.5 °C, 2014
Maximum Feels-like 4.7 °C 14:36 9.4 °C 15.7 °C, 2016 3.8 °C, 2018
Mean Feels-like 2.6 °C 5.8 °C 10.6 °C, 2016 -0.4 °C, 2017
Air-frost Hrs 0 hrs 0 hrs 1 hrs, 2010 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 4.2 °C (-0.5) 4.7 °C (-0.2) 8.8 °C (+4.1), 2012 1.9 °C (-2.8), 2011
Humidity Range 9% 15% 31%, 2019 9%, 2009
Pressure Range 6 hPa 8 hPa 24 hPa, 2012 3 hPa, 2016
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 3 [43%]38 hrs (171%) [38%] 5 [71%], 2016 0 [0%], 2012
Wet Hours 1.533 hrs (116%) [9.7%] 5.5, 2012 0, 2016
Cloud Cover not available
Events None
Comments 18-20 SLight Rain
Extra Comments
Issues None known
Observer Absent? No
Pond Temperature (Heath) 0.0 °C
Notes
Times of extremes are computed using the midpoint of the longest continuous period at that extreme value.
Cumulative anomalies are reported according to the expected value for the month-to-date rather than month-end.
Sun hrs, Wet hrs, Cloud cover and Events are based on manual equipment/observations (entered with a delay of 1-10 days); their reliablity is questionable and they are provided for interest only.
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Daily Graph of Conditions

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Webcam Summary of Cloud Conditions


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Wind rose