Daily Report for 15th April 2009

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 8.3 °C (+3.5) 06:32 7.2 °C (+2.5) 10.8 °C (+6.0), 2013 1.3 °C (-3.5), 2020
Maximum Temperature 20.5 °C (+8.0) 14:52 15.6 °C (+3.5) 24.2 °C (+11.7), 2015 9.5 °C (-3.0), 2012
Mean Temperature 13.5 °C (+5.7) 10.8 °C (+3.0) 17.3 °C, 2015 5.8 °C, 2012
Minimum Humidity 60% 16:31 59% 67%, 2016 27%, 2015
Maximum Humidity 96% 08:44 92% 96%, 2009 70%, 2015
Mean Humidity 81% 78% 86%, 2016 48%, 2015
Minimum Pressure 1003 hPa 17:25 1009 hPa 1028 hPa, 2014 996 hPa, 2016
Maximum Pressure 1009 hPa 00:05 1015 hPa 1031 hPa, 2014 1005 hPa, 2016
Mean Pressure 1006 hPa 1012 hPa 1030 hPa, 2014 1000 hPa, 2016
Mean Wind Speed n/a (-4.9) 0.0 mph (-4.9) 8.19, 2013 1, 2016
Maximum Wind Speed n/a 0.0 mph 19.4, 2012 8.1, 2011
Maximum Gust n/a 0.0 mph 27, 2012 10.7, 2011
Mean Wind Direction n/a
Rainfall 2.5 mm 13.2 mm (54%) 21.1 mm, 2016
Maximum Hourly Rain 1.1 mm 05:34 6.9 mm, 2016
Maximum 10-min Rain 0.8 mm 05:22 2.1 mm, 2016
Maximum Rain Rate 33 mm/h 05:19 42 mm/h, 2016
Minimum Dew Point 7.4 °C 05:36 3.7 °C 7.4 °C, 2009 -4.6 °C, 2012
Maximum Dew Point 14.5 °C 13:22 9.5 °C 14.5 °C, 2009 2.4 °C, 2012
Mean Dew Point 10.0 °C 6.7 °C 10.0 °C, 2009 -0.9 °C, 2012
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 8.3 °C 7.4 °C 11.0 °C, 2013 1.3 °C, 2020
Day Maximum (09-21) 20.5 °C 15.6 °C 24.2 °C, 2015 9.5 °C, 2012
Max 10m Temp Rise 1.0 °C 09:48 0.3 °C 1.1 °C, 2020 0.4 °C, 2011
Max 1hr Temp Rise 2.9 °C 10:43 0.9 °C 4.6 °C, 2020 1.5 °C, 2017
Max 1hr Hum Rise 4% 01:01 2% 26%, 2012 3%, 2017
Max 10m Temp Fall 0.4 °C 09:44 0.2 °C 1.7 °C, 2012 0.3 °C, 2013
Max 1hr Temp Fall 1.6 °C 19:11 0.5 °C 3.6 °C, 2015 1.1 °C, 2013
Max 1hr Hum Fall 14% 13:54 3% 21%, 2012 6%, 2016
Max 10m Wind Speed n/a 0.0 mph 12.3, 2013 5.4, 2011
Minimum Feels-like n/a 0.0 °C 10.8, 2013 -1.7, 2012
Maximum Feels-like n/a 0.0 °C 24.2, 2015 7.8, 2012
Mean Feels-like n/a 0.0 °C 17.3, 2015 3.1, 2012
Air-frost Hrs 0 hrs 0 hrs 0 hrs, 2009 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 12.2 °C (+4.5) 8.4 °C (+1.0) 16.0 °C (+8.3), 2020 3.9 °C (-3.8), 2016
Humidity Range 36% 33% 52%, 2020 24%, 2016
Pressure Range 6 hPa 6 hPa 13 hPa, 2012 3 hPa, 2011
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 6.3 [51%]73 hrs (110%) [40%] 12.6 [101%], 2020 0.1 [1%], 2011
Wet Hours 3
[Mean rain rate: 0.8 mm/h]
20 hrs (87%) [5.6%] 16, 2016 0, 2010
Cloud Cover not available
Events None
Comments M. 00-30 Rain, H. 03-06, 11 L. Showerower
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