Daily Report for 13th December 2009

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 2.3 °C (-1.0) 23:59 4.3 °C (+0.9) 7.8 °C (+4.5), 2013 -2.3 °C (-5.6), 2012
Maximum Temperature 6.2 °C (-1.8) 14:02 9.1 °C (+0.7) 13.5 °C (+5.5), 2016 1.1 °C (-6.9), 2012
Mean Temperature 4.3 °C (-1.4) 6.8 °C (+0.8) 11.3 °C, 2016 -0.3 °C, 2012
Minimum Humidity 84% 14:28 81% 85%, 2010 57%, 2011
Maximum Humidity 95% 01:54 97% 98%, 2010 82%, 2016
Mean Humidity 91% 91% 93%, 2010 75%, 2011
Minimum Pressure 1025 hPa 23:52 1007 hPa 1025 hPa, 2009 971 hPa, 2019
Maximum Pressure 1029 hPa 00:09 1015 hPa 1029 hPa, 2009 985 hPa, 2019
Mean Pressure 1027 hPa 1011 hPa 1027 hPa, 2009 980 hPa, 2019
Mean Wind Speed 5.0 mph (-0.1) 4.8 mph (-0.3) 9.6 mph, 2011 2.5 mph, 2012
Maximum Wind Speed 10.9 mph 10.6 mph 20.8 mph, 2011 6.7 mph, 2012
Maximum Gust 16.1 mph 16:03 15.9 mph 33.4 mph, 2017 10.0 mph, 2012
Mean Wind Direction N
Rainfall 0.5 mm 33.2 mm (141%) 10.1 mm, 2017
Maximum Hourly Rain n/a 09:24 4.9, 2011
Maximum 10-min Rain n/a 09:24 3, 2011
Maximum Rain Rate n/a 30, 2011
Minimum Dew Point 1.3 °C 23:59 2.8 °C 6.3 °C, 2013 -3.7 °C, 2012
Maximum Dew Point 4.2 °C 12:20 8.1 °C 10.9 °C, 2011 0.1 °C, 2012
Mean Dew Point 2.9 °C 5.3 °C 8.7 °C, 2013 -2.3 °C, 2012
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) * 3.6 °C * 5.3 °C 7.7 °C, 2013 -2.3 °C, 2012
Day Maximum (09-21) 6.2 °C 8.8 °C 13.5 °C, 2016 0.8 °C, 2012
Max 10m Temp Rise 0.6 °C 12:00 0.4 °C 0.6 °C, 2009 0.2 °C, 2013
Max 1hr Temp Rise 1.4 °C 12:50 1.0 °C 2.1 °C, 2014 0.5 °C, 2019
Max 1hr Hum Rise 4% 17:28 4% 12%, 2011 2%, 2016
Max 10m Temp Fall 0.5 °C 14:55 0.4 °C 1.8 °C, 2015 0.2 °C, 2010
Max 1hr Temp Fall 1.0 °C 17:08 1.0 °C 4.5 °C, 2015 0.7 °C, 2018
Max 1hr Hum Fall 6% 12:40 7% 13%, 2014 1%, 2015
Max 10m Wind Speed 8.2 mph 12:17 8.2 mph 17.4 mph, 2011 4.9 mph, 2012
Minimum Feels-like 0.1 °C 01:44 1.6 °C 5.7 °C, 2016 -6.2 °C, 2012
Maximum Feels-like 6.2 °C 13:42 9.8 °C 14.9 °C, 2016 1.1 °C, 2012
Mean Feels-like 2.6 °C 6.0 °C 11.9 °C, 2016 -2.2 °C, 2012
Air-frost Hrs 0 hrs 0 hrs 11 hrs, 2012 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 3.9 °C (-0.9) 4.8 °C (-0.2) 7.2 °C (+2.4), 2011 2.9 °C (-1.9), 2019
Humidity Range 11% 16% 39%, 2011 2%, 2016
Pressure Range 4 hPa 8 hPa 15 hPa, 2017 2 hPa, 2016
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 2 [28%]35 hrs (169%) [37%] 7 [99%], 2018 0 [0%], 2013
Wet Hours 0.5
[Mean rain rate: 1.0 mm/h]
31 hrs (119%) [9.9%] 10, 2015 0, 2010
Cloud Cover not available
Events None
Comments 09, 16, 1645 Moderate Showers
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


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Wind rose