Daily Report for 7th April 2022

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 5.8 °C (+0.2) 23:53 4.2 °C (-1.3) 9.8 °C (+4.2), 2011 -1.7 °C (-7.3), 2013
Maximum Temperature 13.2 °C (-0.4) 14:15 11.5 °C (-1.9) 20.9 °C (+7.3), 2011 6.5 °C (-7.1), 2021
Mean Temperature 9.5 °C (-0.1) 7.7 °C (-1.6) 15.2 °C, 2011 3.2 °C, 2021
Minimum Humidity 44% 14:18 55% 84%, 2014 31%, 2013
Maximum Humidity 89% 03:37 88% 94%, 2014 76%, 2011
Mean Humidity 67% 74% 90%, 2019 55%, 2013
Minimum Pressure 985 hPa 06:33 1007 hPa 1033 hPa, 2015 985 hPa, 2022
Maximum Pressure 1002 hPa 23:57 1017 hPa 1038 hPa, 2015 1002 hPa, 2022
Mean Pressure 991 hPa 1011 hPa 1035 hPa, 2015 991 hPa, 2022
Mean Wind Speed 12.4 mph (+7.5) 7.5 mph (+2.6) 12.4 mph, 2022 2.0 mph, 2015
Maximum Wind Speed 29.0 mph 14:50 17.4 mph 29.0 mph, 2022 6.9 mph, 2015
Maximum Gust 49.0 mph 15:12 28.7 mph 49.0 mph, 2022 8.1 mph, 2015
Mean Wind Direction WNW
Rainfall 3.4 mm 13.9 mm (142%) 3.9 mm, 2014
Maximum Hourly Rain 2.4 mm 03:10 2.4 mm, 2022
Maximum 10-min Rain 1.4 mm 02:27 1.4 mm, 2022
Maximum Rain Rate 30 mm/h 02:22 30 mm/h, 2022
Minimum Dew Point 0.7 °C 14:45 0.3 °C 6.6 °C, 2014 -6.9 °C, 2013
Maximum Dew Point 7.5 °C 02:21 5.9 °C 12.6 °C, 2014 -1.3 °C, 2021
Mean Dew Point 3.5 °C 3.2 °C 11.3 °C, 2014 -3.9 °C, 2013
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) * 7.1 °C * 06:26 4.5 °C 12.6 °C, 2014 -1.7 °C, 2013
Day Maximum (09-21) 13.2 °C 14:15 11.5 °C 20.9 °C, 2011 6.5 °C, 2021
Max 10m Temp Rise 0.6 °C 14:06 0.7 °C 1.1 °C, 2020 0.2 °C, 2014
Max 1hr Temp Rise 1.4 °C 14:13 1.9 °C 4.8 °C, 2013 0.8 °C, 2014
Max 1hr Hum Rise 14% 19:51 12% 16%, 2020 3%, 2019
Max 10m Temp Fall 0.8 °C 02:31 1.2 °C 0.8 °C, 2016 0.3 °C, 2010
Max 1hr Temp Fall 1.8 °C 03:02 1.8 °C 3.1 °C, 2015 0.4 °C, 2021
Max 1hr Hum Fall 9% 13:56 10% 17%, 2020 4%, 2019
Max 10m Wind Speed 23.8 mph 14:59 13.6 mph 23.8 mph, 2022 4.4 mph, 2015
Minimum Feels-like 2.0 °C 06:55 0.1 °C 7.4 °C, 2011 -6.1 °C, 2021
Maximum Feels-like 13.2 °C 14:13 11.8 °C 22.4 °C, 2011 5.4 °C, 2021
Mean Feels-like 7.5 °C 6.2 °C 15.6 °C, 2011 0.3 °C, 2021
Air-frost Hrs 0 hrs 0.8 hrs 8 hrs, 2021 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 7.4 °C (-0.6) 7.3 °C (-0.5) 15.3 °C (+7.3), 2015 2.9 °C (-5.1), 2010
Humidity Range 45% 33% 47%, 2013 10%, 2014
Pressure Range 17 hPa 10 hPa 17 hPa, 2022 3 hPa, 2021
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 0 [0%]15 hrs (42%) [18%] 11.7 [98%], 2017 0 [0%], 2014
Wet Hours 3
[Mean rain rate: 1.1 mm/h]
15 hrs (140%) [8.9%] 5, 2014 0, 2009
Cloud Cover unknown
Events None
Comments blr
Extra Comments
Issues None known
Observer Absent? No
Pond Temperature (Heath) 9.0 °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 are initially pulled from the official weather station at Heathrow, and later adjusted by hand to reflect local conditions based on webcam observations. Wet hrs are dervied algorithmically from rainfall data, though may be adjusted manually. Cloud cover and Events are manually reported, often with multi-week delays.
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Daily Graph of Conditions

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Webcam Summary of Cloud Conditions

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