Daily Report for 15th December 2009

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 0.0 °C (-3.2) 19:42 3.8 °C (+0.4) 9.4 °C (+6.2), 2015 -1.0 °C (-4.2), 2010
Maximum Temperature 2.3 °C (-5.6) 00:12 8.4 °C (-0.0) 13.6 °C (+5.7), 2015 2.3 °C (-5.6), 2009
Mean Temperature 1.5 °C (-4.4) 6.1 °C (+0.2) 11.6 °C, 2015 1.5 °C, 2009
Minimum Humidity 77% 14:47 81% 90%, 2013 65%, 2011
Maximum Humidity 96% 00:15 97% 97%, 2010 83%, 2016
Mean Humidity 86% 91% 95%, 2013 75%, 2011
Minimum Pressure 1018 hPa 20:30 1009 hPa 1026 hPa, 2010 984 hPa, 2012
Maximum Pressure 1020 hPa 09:44 1016 hPa 1037 hPa, 2010 997 hPa, 2012
Mean Pressure 1019 hPa 1012 hPa 1032 hPa, 2010 991 hPa, 2012
Mean Wind Speed 2.2 mph (-2.9) 4.4 mph (-0.7) 8.6 mph, 2018 2.2 mph, 2009
Maximum Wind Speed 6.9 mph 9.9 mph 19.2 mph, 2011 6.9 mph, 2009
Maximum Gust 10.7 mph 09:19 14.9 mph 30.0 mph, 2019 10.7 mph, 2009
Mean Wind Direction E
Rainfall 0.0 mm 33.5 mm (124%) 11.2 mm, 2018
Maximum Hourly Rain n/a 4.2, 2019
Maximum 10-min Rain n/a 2.4, 2019
Maximum Rain Rate n/a 26, 2019
Minimum Dew Point -2.4 °C 16:35 2.3 °C 7.7 °C, 2015 -3.7 °C, 2010
Maximum Dew Point 3.0 °C 00:12 7.5 °C 12.2 °C, 2015 3.0 °C, 2009
Mean Dew Point -0.6 °C 4.7 °C 10.3 °C, 2013 -0.6 °C, 2009
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) * 0.7 °C * 4.7 °C 9.4 °C, 2015 -1.0 °C, 2010
Day Maximum (09-21) 2.3 °C 8.1 °C 12.6 °C, 2015 2.3 °C, 2009
Max 10m Temp Rise 0.5 °C 12:04 0.4 °C 0.5 °C, 2009 0.2 °C, 2015
Max 1hr Temp Rise 0.8 °C 12:49 0.9 °C 1.4 °C, 2013 0.5 °C, 2015
Max 1hr Hum Rise 4% 17:14 4% 9%, 2011 2%, 2013
Max 10m Temp Fall 0.3 °C 05:28 0.3 °C 1.2 °C, 2019 0.1 °C, 2015
Max 1hr Temp Fall 1.0 °C 16:29 0.9 °C 2.3 °C, 2019 0.2 °C, 2015
Max 1hr Hum Fall 7% 12:49 6% 7%, 2009 1%, 2015
Max 10m Wind Speed 4.9 mph 12:26 7.7 mph 14.3 mph, 2018 4.9 mph, 2009
Minimum Feels-like -2.8 °C 09:19 1.1 °C 8.7 °C, 2015 -4.9 °C, 2018
Maximum Feels-like 3.6 °C 00:03 9.0 °C 16.0 °C, 2015 3.6 °C, 2009
Mean Feels-like 1.2 °C 5.5 °C 12.9 °C, 2015 -1.3 °C, 2018
Air-frost Hrs 0 hrs 0 hrs 4 hrs, 2010 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 2.3 °C (-2.4) 4.6 °C (-0.4) 5.9 °C (+1.2), 2014 2.3 °C (-2.4), 2009
Humidity Range 19% 15% 29%, 2018 3%, 2015
Pressure Range 2 hPa 8 hPa 21 hPa, 2017 2 hPa, 2009
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 2 [28%]40 hrs (168%) [37%] 6.4 [91%], 2019 0 [0%], 2010
Wet Hours 033 hrs (108%) [9%] 7, 2018 0, 2009
Cloud Cover not available
Events None
Comments -
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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