Daily Report for 26th December 2009

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 5.2 °C (+2.3) 00:02 1.7 °C (-1.5) 14.0 °C (+11.1), 2015 -4.5 °C (-7.4), 2010
Maximum Temperature 8.3 °C (+1.0) 14:27 6.1 °C (-1.9) 14.9 °C (+7.6), 2015 2.5 °C (-4.8), 2010
Mean Temperature 6.6 °C (+1.7) 3.9 °C (-1.7) 14.4 °C, 2015 -1.2 °C, 2010
Minimum Humidity 86% 15:36 84% 86%, 2009 52%, 2016
Maximum Humidity 98% 01:48 97% 98%, 2009 82%, 2016
Mean Humidity 94% 92% 97%, 2013 68%, 2016
Minimum Pressure 998 hPa 23:52 1003 hPa 1031 hPa, 2011 979 hPa, 2017
Maximum Pressure 1002 hPa 00:45 1010 hPa 1042 hPa, 2016 999 hPa, 2013
Mean Pressure 1000 hPa 1007 hPa 1032 hPa, 2011 993 hPa, 2017
Mean Wind Speed 6.4 mph (+1.3) 4.4 mph (-0.7) 11.3 mph, 2015 1.8 mph, 2018
Maximum Wind Speed 12.3 mph 10.7 mph 20.6 mph, 2015 5.8 mph, 2018
Maximum Gust 25.9 mph 05:20 16.3 mph 39.3 mph, 2013 10.4 mph, 2018
Mean Wind Direction SW
Rainfall 1.7 mm 58.6 mm (125%) 10.7 mm, 2014
Maximum Hourly Rain 0.8 mm 09:23 3.7 mm, 2017
Maximum 10-min Rain 0.8 mm 09:23 1.0 mm, 2014
Maximum Rain Rate 8 mm/h 09:23 18 mm/h, 2014
Minimum Dew Point 4.3 °C 21:34 0.3 °C 9.2 °C, 2015 -6.3 °C, 2010
Maximum Dew Point 7.1 °C 14:06 5.3 °C 12.4 °C, 2015 -0.8 °C, 2010
Mean Dew Point 5.6 °C 2.7 °C 10.5 °C, 2015 -3.9 °C, 2010
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 5.2 °C 2.4 °C 14.1 °C, 2015 -4.5 °C, 2010
Day Maximum (09-21) 8.3 °C 5.9 °C 14.9 °C, 2015 1.3 °C, 2010
Max 10m Temp Rise 0.2 °C 00:52 0.4 °C 0.5 °C, 2010 0.1 °C, 2015
Max 1hr Temp Rise 0.8 °C 10:50 1.0 °C 1.7 °C, 2010 0.3 °C, 2015
Max 1hr Hum Rise 4% 17:02 4% 9%, 2017 2%, 2011
Max 10m Temp Fall 0.2 °C 06:19 0.4 °C 1.2 °C, 2016 0.2 °C, 2009
Max 1hr Temp Fall 1.1 °C 16:48 0.9 °C 3.3 °C, 2016 0.4 °C, 2015
Max 1hr Hum Fall 7% 14:59 5% 19%, 2013 2%, 2018
Max 10m Wind Speed 10.1 mph 05:24 7.8 mph 16.2 mph, 2013 4.5 mph, 2018
Minimum Feels-like 1.7 °C 00:17 -1.5 °C 14.9 °C, 2015 -9.4 °C, 2010
Maximum Feels-like 7.5 °C 16:02 6.4 °C 17.0 °C, 2015 2.0 °C, 2010
Mean Feels-like 4.1 °C 2.7 °C 15.9 °C, 2015 -2.4 °C, 2010
Air-frost Hrs 0 hrs 4 hrs 13 hrs, 2010 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 3.1 °C (-1.3) 4.4 °C (-0.3) 9.4 °C (+5.0), 2016 0.9 °C (-3.5), 2015
Humidity Range 12% 13% 30%, 2016 9%, 2018
Pressure Range 4 hPa 8 hPa 33 hPa, 2014 3 hPa, 2011
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 1 [14%]68 hrs (167%) [37%] 5 [71%], 2017 0 [0%], 2014
Wet Hours 1
[Mean rain rate: 1.7 mm/h]
69 hrs (133%) [11%] 8, 2014 0, 2010
Cloud Cover not available
Events None
Comments 0430, 09 Heavy Showers
Extra Comments
Issues None known
Observer Absent? Yes - observations may be unreliable
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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