Daily Report for 27th April 2009

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 5.3 °C (-0.4) 23:56 6.8 °C (+1.8) 9.3 °C (+3.6), 2012 1.5 °C (-4.2), 2017
Maximum Temperature 9.9 °C (-4.2) 12:34 16.1 °C (+3.4) 20.8 °C (+6.7), 2010 9.9 °C (-4.2), 2009
Mean Temperature 8.3 °C (-2.3) 10.9 °C (+2.6) 14.1 °C, 2010 6.4 °C, 2016
Minimum Humidity 63% 00:01 55% 78%, 2018 32%, 2016
Maximum Humidity 89% 17:57 90% 93%, 2018 77%, 2017
Mean Humidity 81% 74% 86%, 2018 53%, 2015
Minimum Pressure 994 hPa 12:24 1011 hPa 1025 hPa, 2010 994 hPa, 2009
Maximum Pressure 1004 hPa 00:07 1017 hPa 1028 hPa, 2010 1004 hPa, 2009
Mean Pressure 999 hPa 1014 hPa 1026 hPa, 2010 999 hPa, 2009
Mean Wind Speed n/a (-4.9) 0.0 mph (-4.9) 11.5, 2019 3.4, 2010
Maximum Wind Speed n/a 0.0 mph 22.3, 2019 9.2, 2010
Maximum Gust n/a 0.0 mph 34.6, 2019 13.4, 2010
Mean Wind Direction n/a
Rainfall 4.6 mm 32.5 mm (74%) 7.7 mm, 2018
Maximum Hourly Rain 1.4 mm 11:01 2.4 mm, 2018
Maximum 10-min Rain 0.9 mm 10:28 1.2 mm, 2012
Maximum Rain Rate 8 mm/h 12:20 20 mm/h, 2012
Minimum Dew Point 1.8 °C 00:01 3.2 °C 5.3 °C, 2012 -4.2 °C, 2016
Maximum Dew Point 8.2 °C 12:32 9.1 °C 10.6 °C, 2020 1.7 °C, 2016
Mean Dew Point 5.2 °C 6.1 °C 7.5 °C, 2020 -1.6 °C, 2016
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) * 6.7 °C * 7.1 °C 9.5 °C, 2012 1.5 °C, 2017
Day Maximum (09-21) 9.9 °C 16.1 °C 20.8 °C, 2010 9.9 °C, 2009
Max 10m Temp Rise 0.7 °C 06:10 0.5 °C 0.8 °C, 2011 0.4 °C, 2019
Max 1hr Temp Rise 1.2 °C 07:55 1.6 °C 2.7 °C, 2017 1.2 °C, 2009
Max 1hr Hum Rise 7% 05:24 4% 15%, 2019 6%, 2010
Max 10m Temp Fall 0.6 °C 18:47 0.4 °C 0.9 °C, 2020 0.3 °C, 2010
Max 1hr Temp Fall 1.5 °C 19:34 1.1 °C 2.7 °C, 2020 0.8 °C, 2018
Max 1hr Hum Fall 4% 13:23 6% 30%, 2015 4%, 2009
Max 10m Wind Speed n/a 0.0 mph 18, 2019 8.2, 2011
Minimum Feels-like n/a 0.0 °C 6.7, 2012 -2.6, 2016
Maximum Feels-like n/a 0.0 °C 21.5, 2010 10.7, 2013
Mean Feels-like n/a 0.0 °C 14.4, 2010 4.5, 2016
Air-frost Hrs 0 hrs 0 hrs 0 hrs, 2009 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 4.6 °C (-3.8) 9.3 °C (+1.6) 13.8 °C (+5.4), 2010 3.9 °C (-4.5), 2018
Humidity Range 26% 36% 51%, 2016 15%, 2018
Pressure Range 10 hPa 6 hPa 12 hPa, 2012 1 hPa, 2015
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 0.1 [1%]164 hrs (134%) [49%] 11 [84%], 2011 0 [0%], 2018
Wet Hours 6
[Mean rain rate: 0.8 mm/h]
40 hrs (97%) [6.2%] 8, 2018 0, 2010
Cloud Cover not available
Events None
Comments 08-15 Light (occasional. Mod.) 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

daygraph daygraph 2 daygraph-wdir

Webcam Summary of Cloud Conditions


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Wind rose