Daily Report for 14th June 2022

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 10.2 °C (-1.7) 05:53 11.5 °C (+0.0) 15.3 °C (+3.4), 2021 7.7 °C (-4.2), 2012
Maximum Temperature 24.9 °C (+4.0) 17:47 21.0 °C (+0.7) 28.3 °C (+7.4), 2021 17.2 °C (-3.7), 2015
Mean Temperature 18.5 °C (+1.2) 16.2 °C (+0.4) 22.2 °C, 2021 13.8 °C, 2012
Minimum Humidity 41% 15:25 53% 76%, 2016 34%, 2013
Maximum Humidity 89% 06:35 90% 94%, 2020 75%, 2017
Mean Humidity 62% 72% 84%, 2016 55%, 2017
Minimum Pressure 1019 hPa 19:55 1017 hPa 1023 hPa, 2014 994 hPa, 2016
Maximum Pressure 1026 hPa 00:30 1021 hPa 1027 hPa, 2014 1000 hPa, 2016
Mean Pressure 1022 hPa 1019 hPa 1025 hPa, 2014 996 hPa, 2016
Mean Wind Speed 2.0 mph (-2.4) 3.8 mph (-0.6) 7.0 mph, 2018 2.0 mph, 2022
Maximum Wind Speed 9.4 mph 14:21 11.3 mph 17.3 mph, 2019 9.4 mph, 2010
Maximum Gust 13.7 mph 12:52 18.5 mph 26.5 mph, 2018 13.0 mph, 2011
Mean Wind Direction SW
Rainfall 0.0 mm 14.7 mm (67%) 8.6 mm, 2016
Maximum Hourly Rain n/a 4.1, 2016
Maximum 10-min Rain n/a 2.7, 2016
Maximum Rain Rate n/a 42, 2016
Minimum Dew Point 8.0 °C 05:38 8.7 °C 12.1 °C, 2021 2.6 °C, 2012
Maximum Dew Point 12.8 °C 20:21 13.0 °C 18.4 °C, 2021 10.7 °C, 2013
Mean Dew Point 10.3 °C 10.9 °C 15.2 °C, 2021 6.9 °C, 2012
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 10.2 °C 05:54 11.5 °C 15.7 °C, 2014 7.7 °C, 2012
Day Maximum (09-21) 24.9 °C 17:47 21.0 °C 28.3 °C, 2021 17.2 °C, 2015
Max 10m Temp Rise 1.0 °C 07:11 0.7 °C 1.0 °C, 2022 0.5 °C, 2010
Max 1hr Temp Rise 4.4 °C 07:45 2.3 °C 4.4 °C, 2022 1.6 °C, 2016
Max 1hr Hum Rise 14% 21:06 10% 14%, 2022 4%, 2016
Max 10m Temp Fall 1.1 °C 20:29 0.6 °C 1.1 °C, 2022 0.4 °C, 2013
Max 1hr Temp Fall 3.1 °C 21:12 1.9 °C 3.2 °C, 2018 1.3 °C, 2019
Max 1hr Hum Fall 17% 08:33 11% 25%, 2018 6%, 2016
Max 10m Wind Speed 6.8 mph 09:14 8.8 mph 14.0 mph, 2018 6.5 mph, 2014
Minimum Feels-like 10.6 °C 05:50 12.3 °C 17.6 °C, 2021 6.6 °C, 2012
Maximum Feels-like 27.1 °C 15:51 23.4 °C 34.3 °C, 2021 18.5 °C, 2012
Mean Feels-like 20.0 °C 18.0 °C 26.4 °C, 2021 14.2 °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 14.7 °C (+5.7) 9.5 °C (+0.7) 14.7 °C (+5.7), 2022 4.3 °C (-4.7), 2016
Humidity Range 48% 36% 50%, 2009 13%, 2016
Pressure Range 6 hPa 4 hPa 14 hPa, 2010 2 hPa, 2009
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 14 [93%]90 hrs (100%) [43%] 14 [93%], 2022 0.2 [1%], 2015
Wet Hours 015 hrs (88%) [4.5%] 4, 2012 0, 2009
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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Webcam Summary of Cloud Conditions

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