Daily Report for 1st December 2009

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 0.4 °C (-3.3) 08:21 0.4 °C (-3.3) 9.3 °C (+5.6), 2015 -2.4 °C (-6.1), 2012
Maximum Temperature 5.9 °C (-3.1) 22:59 5.9 °C (-3.0) 14.0 °C (+5.0), 2015 -0.1 °C (-9.1), 2010
Mean Temperature 3.1 °C (-3.2) 3.1 °C (-3.1) 12.3 °C, 2015 -0.7 °C, 2010
Minimum Humidity 77% 20:39 77% 83%, 2018 57%, 2010
Maximum Humidity 95% 10:11 95% 98%, 2012 80%, 2016
Mean Humidity 87% 87% 90%, 2012 71%, 2010
Minimum Pressure 1004 hPa 23:49 1004 hPa 1031 hPa, 2013 997 hPa, 2018
Maximum Pressure 1013 hPa 08:48 1013 hPa 1034 hPa, 2013 1009 hPa, 2011
Mean Pressure 1008 hPa 1008 hPa 1032 hPa, 2013 1004 hPa, 2018
Mean Wind Speed 2.8 mph (-2.3) 2.8 mph (-2.3) 10.4 mph, 2010 1.9 mph, 2013
Maximum Wind Speed 8.1 mph 8.1 mph 20.6 mph, 2011 6.7 mph, 2013
Maximum Gust 11.4 mph 23:15 11.4 mph 30.1 mph, 2015 8.7 mph, 2013
Mean Wind Direction SW
Rainfall 0.3 mm 0.3 mm (17%) 6.4 mm, 2018
Maximum Hourly Rain n/a 23:26 2.6, 2018
Maximum 10-min Rain n/a 23:26 0.9, 2018
Maximum Rain Rate n/a 6.6, 2018
Minimum Dew Point -0.6 °C 06:43 -0.6 °C 5.1 °C, 2015 -8.0 °C, 2010
Maximum Dew Point 3.2 °C 23:55 3.2 °C 11.8 °C, 2015 -2.1 °C, 2010
Mean Dew Point 1.1 °C 1.1 °C 8.9 °C, 2015 -5.3 °C, 2010
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 0.4 °C 0.4 °C 9.6 °C, 2011 -2.4 °C, 2012
Day Maximum (09-21) 5.9 °C 5.9 °C 14.0 °C, 2015 -0.1 °C, 2010
Max 10m Temp Rise 0.7 °C 11:21 0.7 °C 1.0 °C, 2015 0.1 °C, 2010
Max 1hr Temp Rise 1.9 °C 12:06 1.9 °C 2.6 °C, 2015 0.2 °C, 2014
Max 1hr Hum Rise 6% 23:40 6% 10%, 2010 3%, 2014
Max 10m Temp Fall 0.3 °C 01:21 0.3 °C 0.4 °C, 2013 0.1 °C, 2010
Max 1hr Temp Fall 0.7 °C 01:39 0.7 °C 1.7 °C, 2013 0.3 °C, 2010
Max 1hr Hum Fall 8% 18:43 8% 12%, 2012 3%, 2018
Max 10m Wind Speed 5.6 mph 23:30 5.6 mph 13.3 mph, 2015 5.1 mph, 2013
Minimum Feels-like -1.9 °C 03:00 -1.9 °C 8.4 °C, 2015 -8.4 °C, 2010
Maximum Feels-like 5.9 °C 22:51 5.9 °C 15.8 °C, 2015 -3.3 °C, 2010
Mean Feels-like 2.6 °C 2.6 °C 13.2 °C, 2015 -6.1 °C, 2010
Air-frost Hrs 0 hrs 0 hrs 24 hrs, 2010 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 5.5 °C (+0.2) 5.5 °C (+0.2) 8.1 °C (+2.8), 2016 0.9 °C (-4.4), 2010
Humidity Range 18% 18% 33%, 2010 11%, 2018
Pressure Range 9 hPa 9 hPa 14 hPa, 2018 3 hPa, 2012
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 5 [68%]5 hrs (313%) [69%] 5 [68%], 2009 0 [0%], 2010
Wet Hours 0.50.5 hrs (25%) [2.1%] 7, 2011 0, 2012
Cloud Cover not available
Events None
Comments 2330-00 Light Rain
Extra Comments
Issues 1st - 6th: Rainfall data approx; 10-min totals & rain rates unavailable as 5-min logs; monthly sum is correct.
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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Webcam Summary of Cloud Conditions


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Wind rose