Daily Report for 14th April 2022

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 7.9 °C (+2.0) 06:31 5.0 °C (-0.7) 11.3 °C (+5.4), 2013 -0.7 °C (-6.6), 2019
Maximum Temperature 19.9 °C (+5.7) 14:39 13.6 °C (-0.1) 21.8 °C (+7.6), 2015 10.2 °C (-4.0), 2019
Mean Temperature 14.6 °C (+3.9) 9.2 °C (-0.4) 14.9 °C, 2013 5.0 °C, 2019
Minimum Humidity 52% 14:41 52% 69%, 2009 35%, 2015
Maximum Humidity 94% 07:00 88% 98%, 2013 73%, 2011
Mean Humidity 73% 72% 82%, 2009 56%, 2014
Minimum Pressure 1021 hPa 00:04 1009 hPa 1033 hPa, 2021 1005 hPa, 2016
Maximum Pressure 1026 hPa 23:56 1018 hPa 1035 hPa, 2021 1010 hPa, 2009
Mean Pressure 1023 hPa 1013 hPa 1034 hPa, 2021 1006 hPa, 2016
Mean Wind Speed 1.0 mph (-3.9) 5.5 mph (+0.6) 9.7 mph, 2013 1.0 mph, 2022
Maximum Wind Speed 6.8 mph 12:24 14.7 mph 20.6 mph, 2013 6.8 mph, 2022
Maximum Gust 10.3 mph 16:01 23.6 mph 29.3 mph, 2013 10.3 mph, 2022
Mean Wind Direction NW
Rainfall 0.0 mm 14.9 mm (76%) 2.5 mm, 2016
Maximum Hourly Rain n/a 2, 2016
Maximum 10-min Rain n/a 2, 2016
Maximum Rain Rate n/a 16.4, 2009
Minimum Dew Point 6.4 °C 06:29 1.6 °C 7.2 °C, 2018 -3.0 °C, 2019
Maximum Dew Point 11.5 °C 11:27 6.7 °C 11.5 °C, 2009 1.9 °C, 2019
Mean Dew Point 9.5 °C 4.3 °C 9.5 °C, 2022 -0.3 °C, 2019
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 7.9 °C 06:31 5.2 °C 10.9 °C, 2013 -0.7 °C, 2019
Day Maximum (09-21) 19.9 °C 14:40 13.6 °C 21.8 °C, 2015 10.2 °C, 2019
Max 10m Temp Rise 0.7 °C 07:01 0.7 °C 0.8 °C, 2016 0.4 °C, 2011
Max 1hr Temp Rise 2.5 °C 10:27 2.3 °C 3.9 °C, 2019 1.6 °C, 2014
Max 1hr Hum Rise 6% 23:31 10% 16%, 2014 4%, 2011
Max 10m Temp Fall 0.4 °C 15:01 0.8 °C 0.7 °C, 2016 0.3 °C, 2010
Max 1hr Temp Fall 1.5 °C 23:38 1.7 °C 1.9 °C, 2015 1.1 °C, 2017
Max 1hr Hum Fall 9% 08:50 11% 17%, 2012 3%, 2017
Max 10m Wind Speed 4.6 mph 16:59 11.3 mph 16.2 mph, 2013 4.6 mph, 2022
Minimum Feels-like 7.9 °C 06:28 2.2 °C 12.5 °C, 2013 -3.2 °C, 2019
Maximum Feels-like 21.6 °C 13:43 14.2 °C 21.8 °C, 2015 10.2 °C, 2019
Mean Feels-like 15.6 °C 8.5 °C 15.7 °C, 2013 3.0 °C, 2019
Air-frost Hrs 0 hrs 0.4 hrs 2 hrs, 2019 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 12.0 °C (+3.7) 8.6 °C (+0.6) 14.3 °C (+6.0), 2015 6.1 °C (-2.2), 2011
Humidity Range 42% 36% 54%, 2013 19%, 2011
Pressure Range 4 hPa 9 hPa 7 hPa, 2012 1 hPa, 2009
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 6 [48%]52 hrs (72%) [31%] 12.4 [100%], 2015 0 [0%], 2011
Wet Hours 016 hrs (75%) [4.8%] 2, 2016 0, 2010
Cloud Cover unknown
Events None
Comments blr
Extra Comments
Issues None known
Observer Absent? No
Pond Temperature (Heath) 11.0 °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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