Daily Report for 13th June 2022

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 11.0 °C (-0.8) 05:15 11.6 °C (+0.2) 15.1 °C (+3.3), 2015 5.6 °C (-6.2), 2012
Maximum Temperature 21.3 °C (+0.5) 17:59 20.7 °C (+0.5) 28.8 °C (+8.0), 2021 14.0 °C (-6.8), 2019
Mean Temperature 16.4 °C (-0.1) 16.0 °C (+0.3) 21.7 °C, 2021 12.7 °C, 2019
Minimum Humidity 48% 15:51 54% 80%, 2019 34%, 2014
Maximum Humidity 81% 05:50 90% 95%, 2011 77%, 2017
Mean Humidity 64% 73% 88%, 2019 56%, 2014
Minimum Pressure 1025 hPa 20:31 1017 hPa 1025 hPa, 2022 999 hPa, 2016
Maximum Pressure 1027 hPa 11:07 1021 hPa 1030 hPa, 2021 1004 hPa, 2016
Mean Pressure 1026 hPa 1019 hPa 1027 hPa, 2021 1001 hPa, 2016
Mean Wind Speed 2.1 mph (-2.3) 3.9 mph (-0.5) 9.2 mph, 2013 1.3 mph, 2017
Maximum Wind Speed 8.3 mph 10:44 11.4 mph 18.5 mph, 2013 6.8 mph, 2017
Maximum Gust 12.5 mph 09:53 18.9 mph 29.1 mph, 2013 10.5 mph, 2017
Mean Wind Direction NW
Rainfall 0.0 mm 14.7 mm (72%) 4.1 mm, 2016
Maximum Hourly Rain n/a 2, 2016
Maximum 10-min Rain n/a 1.5, 2016
Maximum Rain Rate n/a 30, 2016
Minimum Dew Point 7.4 °C 00:22 8.7 °C 12.1 °C, 2016 2.8 °C, 2012
Maximum Dew Point 10.9 °C 20:22 13.0 °C 17.6 °C, 2021 9.7 °C, 2012
Mean Dew Point 9.2 °C 10.9 °C 14.1 °C, 2021 5.8 °C, 2012
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 11.0 °C 05:17 11.6 °C 15.1 °C, 2015 5.6 °C, 2012
Day Maximum (09-21) 21.3 °C 17:59 20.7 °C 28.8 °C, 2021 14.0 °C, 2019
Max 10m Temp Rise 0.7 °C 15:16 0.6 °C 1.1 °C, 2009 0.4 °C, 2011
Max 1hr Temp Rise 2.5 °C 07:45 2.1 °C 4.6 °C, 2012 1.3 °C, 2015
Max 1hr Hum Rise 10% 21:54 10% 14%, 2020 4%, 2015
Max 10m Temp Fall 0.6 °C 21:25 0.6 °C 1.3 °C, 2020 0.3 °C, 2010
Max 1hr Temp Fall 2.8 °C 21:48 1.8 °C 3.0 °C, 2020 1.0 °C, 2015
Max 1hr Hum Fall 9% 08:01 10% 24%, 2021 6%, 2015
Max 10m Wind Speed 5.9 mph 10:49 8.9 mph 14.8 mph, 2013 4.3 mph, 2014
Minimum Feels-like 11.3 °C 05:15 12.4 °C 18.1 °C, 2015 5.6 °C, 2012
Maximum Feels-like 22.9 °C 18:31 23.1 °C 34.5 °C, 2021 15.7 °C, 2019
Mean Feels-like 17.3 °C 17.8 °C 25.2 °C, 2021 13.4 °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 10.3 °C (+1.3) 9.1 °C (+0.3) 15.5 °C (+6.5), 2021 2.6 °C (-6.4), 2019
Humidity Range 33% 35% 50%, 2012 13%, 2016
Pressure Range 3 hPa 4 hPa 9 hPa, 2010 3 hPa, 2022
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 11 [73%]76 hrs (91%) [39%] 15 [100%], 2021 0 [0%], 2019
Wet Hours 015 hrs (95%) [4.9%] 7, 2019 0, 2010
Cloud Cover unknown
Events None
Comments -
Extra Comments
Issues None known
Observer Absent? Yes - observations may be unreliable
Pond Temperature (Heath) 18.5 °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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