Daily Report for 19th December 2009

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature -3.5 °C (-6.6) 07:20 2.5 °C (-0.8) 13.2 °C (+10.1), 2015 -5.3 °C (-8.4), 2010
Maximum Temperature 0.7 °C (-6.8) 23:57 7.0 °C (-1.2) 16.0 °C (+8.4), 2015 0.1 °C (-7.5), 2010
Mean Temperature -1.7 °C (-6.7) 4.8 °C (-1.0) 14.8 °C, 2015 -2.6 °C, 2010
Minimum Humidity 77% 15:34 81% 86%, 2017 57%, 2014
Maximum Humidity 90% 15:29 97% 98%, 2012 82%, 2016
Mean Humidity 86% 91% 94%, 2012 76%, 2014
Minimum Pressure 1000 hPa 23:22 1008 hPa 1034 hPa, 2017 988 hPa, 2019
Maximum Pressure 1015 hPa 01:07 1016 hPa 1036 hPa, 2017 1000 hPa, 2010
Mean Pressure 1008 hPa 1012 hPa 1035 hPa, 2017 996 hPa, 2010
Mean Wind Speed 4.6 mph (-0.5) 4.7 mph (-0.4) 8.8 mph, 2015 0.5 mph, 2016
Maximum Wind Speed 12.7 mph 11.2 mph 18.1 mph, 2014 4.7 mph, 2016
Maximum Gust 16.8 mph 00:01 16.8 mph 28.4 mph, 2014 6.3 mph, 2016
Mean Wind Direction W
Rainfall 0.0 mm 42.0 mm (122%) 7.5 mm, 2019
Maximum Hourly Rain n/a 3.7, 2013
Maximum 10-min Rain n/a 2, 2014
Maximum Rain Rate n/a 30, 2014
Minimum Dew Point -5.3 °C 02:17 0.9 °C 9.4 °C, 2015 -8.0 °C, 2010
Maximum Dew Point -0.8 °C 23:57 6.1 °C 13.5 °C, 2015 -1.6 °C, 2010
Mean Dew Point -3.8 °C 3.4 °C 11.2 °C, 2015 -4.4 °C, 2010
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) -3.5 °C 3.4 °C 12.6 °C, 2015 -4.3 °C, 2010
Day Maximum (09-21) 0.7 °C 6.8 °C 16.0 °C, 2015 0.1 °C, 2010
Max 10m Temp Rise n/a 14:47 0.4 °C 0.3, 2010 0.2, 2011
Max 1hr Temp Rise n/a 15:37 0.9 °C 1.4, 2017 0.3, 2014
Max 1hr Hum Rise n/a 14:38 4% 9, 2013 2, 2015
Max 10m Temp Fall n/a 14:38 0.3 °C 0.9, 2013 0.2, 2015
Max 1hr Temp Fall n/a 14:38 0.9 °C 2.1, 2013 0.4, 2016
Max 1hr Hum Fall n/a 15:37 6% 17, 2014 2, 2016
Max 10m Wind Speed n/a 06:30 8.0 mph 13.9, 2019 2.5, 2016
Minimum Feels-like -9.7 °C 06:26 -0.8 °C 14.9 °C, 2015 -9.8 °C, 2010
Maximum Feels-like 0.6 °C 13:09 7.5 °C 18.6 °C, 2015 0.0 °C, 2010
Mean Feels-like -4.0 °C 3.7 °C 16.7 °C, 2015 -5.9 °C, 2010
Air-frost Hrs 20 hrs 2 hrs 23 hrs, 2010 0 hrs, 2012
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 4.2 °C (-0.3) 4.4 °C (-0.4) 7.6 °C (+3.1), 2014 1.9 °C (-2.6), 2016
Humidity Range 13% 15% 34%, 2014 3%, 2016
Pressure Range 15 hPa 8 hPa 18 hPa, 2013 2 hPa, 2017
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 6.5 [93%]52 hrs (177%) [39%] 6.5 [93%], 2009 0 [0%], 2010
Wet Hours 051 hrs (133%) [11%] 7, 2012 0, 2009
Cloud Cover not available
Events Lying Snow (at 09z): ~2 cm
Air Frost
Comments Lying Snow: 2cm
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

daygraph daygraph 2 daygraph-wdir

Webcam Summary of Cloud Conditions


Webcam summary not available for this day

Wind rose