Daily Report for 4th June 2022

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 12.1 °C (+1.0) 05:40 9.6 °C (-1.4) 13.4 °C (+2.3), 2018 6.2 °C (-4.9), 2012
Maximum Temperature 20.1 °C (+0.4) 15:48 20.6 °C (+0.9) 27.8 °C (+8.1), 2010 14.2 °C (-5.5), 2012
Mean Temperature 15.1 °C (+0.7) 14.8 °C (-0.3) 18.3 °C, 2011 10.1 °C, 2012
Minimum Humidity 58% 17:36 50% 82%, 2016 27%, 2015
Maximum Humidity 84% 05:44 89% 98%, 2012 72%, 2017
Mean Humidity 73% 71% 87%, 2016 51%, 2015
Minimum Pressure 1020 hPa 23:49 1019 hPa 1023 hPa, 2013 1001 hPa, 2020
Maximum Pressure 1023 hPa 08:19 1022 hPa 1031 hPa, 2013 1008 hPa, 2020
Mean Pressure 1021 hPa 1020 hPa 1027 hPa, 2013 1004 hPa, 2020
Mean Wind Speed 6.8 mph (+2.4) 3.4 mph (-1.0) 6.8 mph, 2022 1.7 mph, 2021
Maximum Wind Speed 14.4 mph 10:53 10.4 mph 19.7 mph, 2014 7.8 mph, 2016
Maximum Gust 22.8 mph 14:13 18.0 mph 29.4 mph, 2014 10.5 mph, 2016
Mean Wind Direction ENE
Rainfall 0.0 mm 0.2 mm (3%) 8.9 mm, 2012
Maximum Hourly Rain n/a 3, 2014
Maximum 10-min Rain n/a 1.3, 2014
Maximum Rain Rate n/a 24, 2014
Minimum Dew Point 9.0 °C 01:05 7.5 °C 11.3 °C, 2018 1.6 °C, 2013
Maximum Dew Point 12.4 °C 15:26 12.1 °C 15.7 °C, 2016 6.4 °C, 2009
Mean Dew Point 10.1 °C 9.4 °C 13.3 °C, 2018 4.6 °C, 2013
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 12.1 °C 05:37 9.6 °C 14.6 °C, 2018 6.6 °C, 2009
Day Maximum (09-21) 20.1 °C 15:49 20.6 °C 27.8 °C, 2010 14.2 °C, 2012
Max 10m Temp Rise 0.9 °C 11:51 0.8 °C 1.0 °C, 2015 0.4 °C, 2014
Max 1hr Temp Rise 2.9 °C 12:10 2.7 °C 4.5 °C, 2015 1.2 °C, 2014
Max 1hr Hum Rise 7% 21:54 12% 21%, 2014 3%, 2016
Max 10m Temp Fall 0.7 °C 16:03 0.6 °C 1.3 °C, 2014 0.3 °C, 2016
Max 1hr Temp Fall 1.5 °C 20:25 2.0 °C 4.3 °C, 2014 1.0 °C, 2018
Max 1hr Hum Fall 12% 12:08 14% 18%, 2014 2%, 2021
Max 10m Wind Speed 11.1 mph 14:37 7.8 mph 14.5 mph, 2014 6.0 mph, 2021
Minimum Feels-like 13.1 °C 05:13 8.9 °C 15.3 °C, 2018 2.6 °C, 2012
Maximum Feels-like 22.4 °C 15:45 22.3 °C 30.6 °C, 2010 14.2 °C, 2012
Mean Feels-like 16.4 °C 15.8 °C 20.0 °C, 2011 9.1 °C, 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 8.0 °C (-0.6) 11.0 °C (+2.3) 18.1 °C (+9.5), 2010 3.2 °C (-5.4), 2021
Humidity Range 26% 39% 51%, 2015 9%, 2016
Pressure Range 3 hPa 3 hPa 12 hPa, 2019 2 hPa, 2018
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 4 [27%]21 hrs (82%) [35%] 15 [101%], 2010 0 [0%], 2016
Wet Hours 00.2 hrs (4%) [0.2%] 8, 2021 0, 2009
Cloud Cover unknown
Events None
Comments -
Extra Comments
Issues None known
Observer Absent? Yes - observations may be unreliable
Pond Temperature (Heath) 17.5 °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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Daily Graph of Conditions

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Webcam Summary of Cloud Conditions

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