Daily Report for 8th December 2009

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 4.4 °C (+1.0) 03:40 4.4 °C (+0.9) 10.7 °C (+7.2), 2016 -1.5 °C (-5.0), 2010
Maximum Temperature 10.5 °C (+2.1) 23:59 9.6 °C (+0.9) 13.5 °C (+5.1), 2015 2.0 °C (-6.4), 2010
Mean Temperature 7.2 °C (+1.5) 7.0 °C (+0.9) 12.1 °C, 2016 0.0 °C, 2010
Minimum Humidity 83% 15:49 78% 83%, 2009 62%, 2014
Maximum Humidity 98% 23:43 97% 98%, 2009 79%, 2016
Mean Humidity 91% 89% 91%, 2009 76%, 2014
Minimum Pressure 1001 hPa 00:32 996 hPa 1024 hPa, 2013 992 hPa, 2019
Maximum Pressure 1012 hPa 23:22 1006 hPa 1030 hPa, 2015 1006 hPa, 2019
Mean Pressure 1006 hPa 1001 hPa 1026 hPa, 2016 1000 hPa, 2019
Mean Wind Speed 4.7 mph (-0.4) 5.1 mph (+0.0) 11.1 mph, 2019 3.5 mph, 2012
Maximum Wind Speed 10.5 mph 10.7 mph 22.5 mph, 2011 9.8 mph, 2012
Maximum Gust 17.3 mph 20:16 17.0 mph 36.5 mph, 2011 14.5 mph, 2012
Mean Wind Direction SW
Rainfall 1.1 mm 31.7 mm (219%) 2.6 mm, 2015
Maximum Hourly Rain 0.5 mm 21:22 1.8 mm, 2019
Maximum 10-min Rain 0.3 mm 23:18 0.8 mm, 2015
Maximum Rain Rate 0.7 mm/h 21:22 11 mm/h, 2015
Minimum Dew Point 3.0 °C 03:15 2.4 °C 7.0 °C, 2016 -5.6 °C, 2010
Maximum Dew Point 10.2 °C 23:59 8.5 °C 11.8 °C, 2015 0.7 °C, 2017
Mean Dew Point 5.8 °C 5.3 °C 8.4 °C, 2016 -1.4 °C, 2010
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 4.4 °C 5.4 °C 11.6 °C, 2015 -1.5 °C, 2010
Day Maximum (09-21) 10.5 °C 9.1 °C 13.5 °C, 2015 2.0 °C, 2010
Max 10m Temp Rise 0.2 °C 13:10 0.4 °C 1.0 °C, 2011 0.2 °C, 2009
Max 1hr Temp Rise 0.9 °C 11:03 1.0 °C 2.3 °C, 2013 0.6 °C, 2019
Max 1hr Hum Rise 6% 18:27 5% 8%, 2019 1%, 2016
Max 10m Temp Fall 0.1 °C 18:19 0.4 °C 0.4 °C, 2019 0.1 °C, 2009
Max 1hr Temp Fall 0.5 °C 02:28 1.0 °C 1.9 °C, 2019 0.5 °C, 2009
Max 1hr Hum Fall 4% 12:22 8% 13%, 2014 1%, 2016
Max 10m Wind Speed 6.7 mph 02:48 8.7 mph 16.6 mph, 2019 6.7 mph, 2009
Minimum Feels-like 1.1 °C 03:44 1.3 °C 10.7 °C, 2016 -7.5 °C, 2010
Maximum Feels-like 11.9 °C 23:58 10.4 °C 15.6 °C, 2015 1.7 °C, 2017
Mean Feels-like 5.9 °C 6.2 °C 12.7 °C, 2016 -3.9 °C, 2010
Air-frost Hrs 0 hrs 0 hrs 13 hrs, 2010 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 6.1 °C (+1.1) 5.2 °C (+0.1) 8.9 °C (+3.9), 2011 2.4 °C (-2.6), 2016
Humidity Range 15% 19% 27%, 2019 2%, 2016
Pressure Range 11 hPa 10 hPa 19 hPa, 2011 3 hPa, 2013
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 3 [42%]21 hrs (162%) [36%] 5.5 [77%], 2014 0 [0%], 2011
Wet Hours 2
[Mean rain rate: 0.6 mm/h]
29 hrs (181%) [15%] 5, 2015 0, 2010
Cloud Cover not available
Events None
Comments 07 Light Shower; 20-22, 23 Light 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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