Daily Report for 12th December 2009

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 3.8 °C (+0.5) 22:48 4.5 °C (+1.0) 5.8 °C (+2.5), 2015 -4.7 °C (-8.0), 2012
Maximum Temperature 7.4 °C (-0.7) 12:54 9.4 °C (+0.9) 13.2 °C (+5.1), 2015 2.1 °C (-6.0), 2012
Mean Temperature 5.0 °C (-0.1) 7.0 °C (+0.9) 10.0 °C, 2015 -1.1 °C, 2012
Minimum Humidity 81% 14:56 81% 97%, 2013 63%, 2018
Maximum Humidity 98% 05:44 97% 98%, 2009 88%, 2015
Mean Humidity 94% 91% 98%, 2013 79%, 2018
Minimum Pressure 1029 hPa 23:37 1005 hPa 1029 hPa, 2009 972 hPa, 2019
Maximum Pressure 1033 hPa 06:00 1014 hPa 1033 hPa, 2009 1004 hPa, 2019
Mean Pressure 1031 hPa 1010 hPa 1031 hPa, 2009 989 hPa, 2019
Mean Wind Speed 4.8 mph (-0.3) 4.7 mph (-0.4) 7.8 mph, 2015 1.1 mph, 2012
Maximum Wind Speed 12.5 mph 10.6 mph 22.5 mph, 2011 6.8 mph, 2016
Maximum Gust 15.4 mph 14:25 15.8 mph 40.9 mph, 2011 9.7 mph, 2012
Mean Wind Direction NE
Rainfall 0.0 mm 32.7 mm (151%) 10.7 mm, 2014
Maximum Hourly Rain n/a 3, 2014
Maximum 10-min Rain n/a 1.1, 2014
Maximum Rain Rate n/a 18, 2014
Minimum Dew Point 2.7 °C 21:26 2.9 °C 3.5 °C, 2015 -5.1 °C, 2012
Maximum Dew Point 6.3 °C 12:18 8.4 °C 9.9 °C, 2015 1.4 °C, 2012
Mean Dew Point 4.1 °C 5.5 °C 6.9 °C, 2015 -2.2 °C, 2012
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) * 4.1 °C * 5.4 °C 8.5 °C, 2014 -4.7 °C, 2012
Day Maximum (09-21) 7.4 °C 9.0 °C 13.2 °C, 2015 2.1 °C, 2012
Max 10m Temp Rise 0.4 °C 02:03 0.4 °C 0.6 °C, 2013 0.2 °C, 2014
Max 1hr Temp Rise 1.0 °C 11:48 1.0 °C 2.2 °C, 2013 0.4 °C, 2018
Max 1hr Hum Rise 5% 17:25 4% 9%, 2014 0%, 2013
Max 10m Temp Fall 0.3 °C 01:50 0.4 °C 0.5 °C, 2014 0.1 °C, 2015
Max 1hr Temp Fall 1.2 °C 15:45 1.0 °C 1.5 °C, 2010 0.2 °C, 2015
Max 1hr Hum Fall 8% 14:53 7% 9%, 2014 1%, 2013
Max 10m Wind Speed 8.0 mph 14:39 8.2 mph 15.4 mph, 2011 5.5 mph, 2012
Minimum Feels-like -0.1 °C 21:58 1.7 °C 3.5 °C, 2016 -7.9 °C, 2017
Maximum Feels-like 7.4 °C 12:45 10.1 °C 14.1 °C, 2015 2.1 °C, 2012
Mean Feels-like 3.7 °C 6.3 °C 9.6 °C, 2015 -2.2 °C, 2017
Air-frost Hrs 0 hrs 0 hrs 12 hrs, 2012 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 3.6 °C (-1.2) 4.9 °C (-0.2) 8.6 °C (+3.8), 2013 3.6 °C (-1.2), 2009
Humidity Range 17% 16% 28%, 2018 1%, 2013
Pressure Range 4 hPa 9 hPa 32 hPa, 2019 3 hPa, 2010
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 3 [42%]33 hrs (173%) [38%] 6.3 [89%], 2017 0 [0%], 2014
Wet Hours 031 hrs (127%) [11%] 7, 2014 0, 2009
Cloud Cover not available
Events None
Comments -
Extra Comments 11th/12th: RHeavy at 98% from 04z on 11th - 11z on 12th
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