Daily Report for 8th April 2022

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 3.7 °C (-1.9) 07:33 4.1 °C (-1.4) 9.4 °C (+3.8), 2020 3.2 °C (-2.4), 2013
Maximum Temperature 10.6 °C (-3.1) 15:36 11.4 °C (-2.0) 20.9 °C (+7.2), 2011 9.9 °C (-3.8), 2013
Mean Temperature 6.6 °C (-2.5) 7.6 °C (-1.7) 14.8 °C, 2020 5.8 °C, 2013
Minimum Humidity 50% 17:10 54% 84%, 2018 36%, 2011
Maximum Humidity 87% 23:37 88% 94%, 2018 75%, 2013
Mean Humidity 71% 74% 92%, 2018 57%, 2011
Minimum Pressure 999 hPa 08:59 1006 hPa 1030 hPa, 2015 999 hPa, 2022
Maximum Pressure 1010 hPa 23:59 1016 hPa 1034 hPa, 2015 1010 hPa, 2022
Mean Pressure 1002 hPa 1010 hPa 1032 hPa, 2015 1002 hPa, 2022
Mean Wind Speed 2.4 mph (-2.5) 6.9 mph (+2.0) 6.8 mph, 2014 1.0 mph, 2019
Maximum Wind Speed 11.9 mph 15:44 16.7 mph 17.5 mph, 2014 5.6 mph, 2019
Maximum Gust 17.1 mph 15:45 27.2 mph 27.0 mph, 2014 9.2 mph, 2019
Mean Wind Direction N
Rainfall 1.0 mm 14.9 mm (133%) 6.2 mm, 2018
Maximum Hourly Rain 1.0 mm 23:01 2.0 mm, 2018
Maximum 10-min Rain 1.0 mm 23:01 1.0 mm, 2022
Maximum Rain Rate 4.8 mm/h 22:55 4.8 mm/h, 2022
Minimum Dew Point 0.1 °C 17:53 0.3 °C 7.8 °C, 2018 -4.6 °C, 2013
Maximum Dew Point 2.8 °C 16:04 5.5 °C 11.1 °C, 2020 0.0 °C, 2013
Mean Dew Point 1.5 °C 3.0 °C 8.9 °C, 2018 -1.9 °C, 2013
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 3.7 °C 07:31 4.4 °C 9.7 °C, 2018 3.2 °C, 2013
Day Maximum (09-21) 10.6 °C 15:37 11.4 °C 20.9 °C, 2011 9.9 °C, 2013
Max 10m Temp Rise 0.5 °C 16:57 0.7 °C 0.8 °C, 2017 0.2 °C, 2018
Max 1hr Temp Rise 1.6 °C 12:30 1.9 °C 3.7 °C, 2017 0.3 °C, 2018
Max 1hr Hum Rise 13% 23:08 12% 13%, 2022 3%, 2018
Max 10m Temp Fall 0.7 °C 22:43 1.1 °C 0.7 °C, 2022 0.2 °C, 2018
Max 1hr Temp Fall 1.9 °C 23:18 1.8 °C 2.4 °C, 2010 0.5 °C, 2018
Max 1hr Hum Fall 11% 12:19 10% 16%, 2014 2%, 2018
Max 10m Wind Speed 8.7 mph 15:53 13.0 mph 13.1 mph, 2014 3.7 mph, 2019
Minimum Feels-like 0.8 °C 21:51 0.2 °C 8.3 °C, 2020 -1.6 °C, 2013
Maximum Feels-like 10.6 °C 15:34 11.7 °C 22.2 °C, 2020 8.3 °C, 2013
Mean Feels-like 5.9 °C 6.2 °C 15.4 °C, 2020 2.9 °C, 2013
Air-frost Hrs 0 hrs 0.7 hrs 0 hrs, 2009 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 6.9 °C (-1.2) 7.3 °C (-0.6) 16.5 °C (+8.4), 2017 1.6 °C (-6.5), 2018
Humidity Range 37% 34% 53%, 2009 10%, 2018
Pressure Range 11 hPa 10 hPa 15 hPa, 2014 3 hPa, 2019
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 4 [33%]19 hrs (47%) [20%] 12.1 [100%], 2011 0 [0%], 2018
Wet Hours 1
[Mean rain rate: 1.0 mm/h]
16 hrs (130%) [8.3%] 10, 2018 0, 2010
Cloud Cover unknown
Events None
Comments blr
Extra Comments
Issues None known
Observer Absent? No
Pond Temperature (Heath) 9.5 °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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Webcam Summary of Cloud Conditions

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