Daily Report for 15th June 2022

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 10.6 °C (-1.3) 05:05 11.4 °C (-0.1) 14.9 °C (+3.0), 2011 8.6 °C (-3.3), 2010
Maximum Temperature 27.9 °C (+6.9) 15:55 21.5 °C (+1.2) 27.9 °C (+6.9), 2022 17.3 °C (-3.7), 2013
Mean Temperature 20.1 °C (+2.8) 16.5 °C (+0.5) 20.1 °C, 2022 13.0 °C, 2010
Minimum Humidity 35% 14:32 52% 64%, 2014 35%, 2022
Maximum Humidity 89% 06:00 89% 94%, 2012 77%, 2021
Mean Humidity 60% 71% 76%, 2019 56%, 2017
Minimum Pressure 1019 hPa 17:00 1017 hPa 1027 hPa, 2014 994 hPa, 2016
Maximum Pressure 1021 hPa 23:57 1021 hPa 1029 hPa, 2014 999 hPa, 2016
Mean Pressure 1020 hPa 1019 hPa 1028 hPa, 2014 996 hPa, 2016
Mean Wind Speed 1.5 mph (-2.9) 3.7 mph (-0.7) 8.0 mph, 2013 1.5 mph, 2022
Maximum Wind Speed 9.6 mph 14:29 11.2 mph 19.7 mph, 2012 8.4 mph, 2021
Maximum Gust 12.5 mph 13:24 18.1 mph 33.4 mph, 2013 11.5 mph, 2020
Mean Wind Direction SW
Rainfall 0.0 mm 14.7 mm (63%) 4.7 mm, 2012
Maximum Hourly Rain n/a 2, 2012
Maximum 10-min Rain n/a 1.4, 2012
Maximum Rain Rate n/a 30, 2012
Minimum Dew Point 8.2 °C 04:36 8.6 °C 9.8 °C, 2020 3.5 °C, 2010
Maximum Dew Point 13.5 °C 08:51 13.0 °C 15.8 °C, 2021 8.7 °C, 2010
Mean Dew Point 11.4 °C 10.9 °C 12.5 °C, 2021 6.4 °C, 2010
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 10.6 °C 05:06 11.4 °C 14.9 °C, 2011 8.6 °C, 2010
Day Maximum (09-21) 27.9 °C 15:55 21.5 °C 27.9 °C, 2022 17.3 °C, 2013
Max 10m Temp Rise 0.9 °C 06:35 0.7 °C 0.9 °C, 2009 0.5 °C, 2010
Max 1hr Temp Rise 3.9 °C 06:59 2.4 °C 3.9 °C, 2022 1.2 °C, 2014
Max 1hr Hum Rise 14% 18:00 11% 22%, 2013 5%, 2011
Max 10m Temp Fall 1.2 °C 17:39 0.6 °C 1.2 °C, 2013 0.4 °C, 2010
Max 1hr Temp Fall 3.2 °C 18:03 2.0 °C 3.6 °C, 2009 1.3 °C, 2010
Max 1hr Hum Fall 12% 09:55 11% 20%, 2012 7%, 2014
Max 10m Wind Speed 6.0 mph 14:29 8.6 mph 13.3 mph, 2013 6.0 mph, 2022
Minimum Feels-like 11.1 °C 04:48 12.2 °C 16.2 °C, 2011 7.0 °C, 2010
Maximum Feels-like 30.2 °C 16:12 23.8 °C 30.2 °C, 2022 17.8 °C, 2010
Mean Feels-like 22.1 °C 18.2 °C 22.1 °C, 2022 12.8 °C, 2010
Air-frost Hrs 0 hrs 0 hrs 0 hrs, 2009 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 17.3 °C (+8.3) 10.0 °C (+1.2) 17.3 °C (+8.3), 2022 4.7 °C (-4.3), 2014
Humidity Range 54% 37% 54%, 2022 18%, 2014
Pressure Range 2 hPa 4 hPa 8 hPa, 2015 2 hPa, 2020
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 13 [86%]103 hrs (107%) [46%] 13 [86%], 2022 0 [0%], 2014
Wet Hours 015 hrs (82%) [4.2%] 3, 2013 0, 2010
Cloud Cover unknown
Events None
Comments -
Extra Comments
Issues None known
Observer Absent? Yes - observations may be unreliable
Pond Temperature (Heath) 19.0 °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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