Daily Report for 11th April 2022

<<Previous Day
Reset
Next Day>>
Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 5.4 °C (-0.3) 05:54 3.7 °C (-1.8) 9.2 °C (+3.4), 2016 0.7 °C (-5.0), 2021
Maximum Temperature 16.2 °C (+2.3) 13:18 12.0 °C (-1.5) 24.8 °C (+10.9), 2020 8.1 °C (-5.8), 2021
Mean Temperature 10.9 °C (+1.0) 7.9 °C (-1.7) 16.4 °C, 2020 3.9 °C, 2021
Minimum Humidity 44% 12:26 51% 93%, 2009 31%, 2020
Maximum Humidity 84% 05:38 88% 98%, 2013 69%, 2017
Mean Humidity 66% 72% 96%, 2009 55%, 2014
Minimum Pressure 1007 hPa 23:24 1008 hPa 1027 hPa, 2010 994 hPa, 2012
Maximum Pressure 1018 hPa 00:29 1017 hPa 1031 hPa, 2010 999 hPa, 2013
Mean Pressure 1012 hPa 1012 hPa 1029 hPa, 2010 997 hPa, 2013
Mean Wind Speed 5.3 mph (+0.4) 6.0 mph (+1.1) 7.7 mph, 2015 2.0 mph, 2014
Maximum Wind Speed 15.7 mph 11:06 15.7 mph 15.7 mph, 2022 7.8 mph, 2014
Maximum Gust 25.1 mph 15:57 25.6 mph 25.1 mph, 2022 13.2 mph, 2014
Mean Wind Direction SE
Rainfall 0.0 mm 14.9 mm (97%) 4.1 mm, 2013
Maximum Hourly Rain n/a 2, 2016
Maximum 10-min Rain n/a 0.5, 2015
Maximum Rain Rate n/a 18, 2015
Minimum Dew Point 1.9 °C 01:38 0.0 °C 8.3 °C, 2009 -4.4 °C, 2015
Maximum Dew Point 7.8 °C 23:58 5.3 °C 10.5 °C, 2020 1.2 °C, 2021
Mean Dew Point 4.6 °C 2.8 °C 9.0 °C, 2009 -1.1 °C, 2021
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 5.4 °C 05:55 4.0 °C 10.5 °C, 2015 0.7 °C, 2021
Day Maximum (09-21) 16.2 °C 13:18 12.0 °C 24.8 °C, 2020 8.1 °C, 2021
Max 10m Temp Rise 0.8 °C 09:52 0.7 °C 0.9 °C, 2011 0.3 °C, 2009
Max 1hr Temp Rise 2.9 °C 10:18 2.2 °C 3.9 °C, 2011 0.4 °C, 2009
Max 1hr Hum Rise 9% 02:49 11% 24%, 2021 2%, 2009
Max 10m Temp Fall 0.8 °C 15:22 1.0 °C 1.7 °C, 2021 0.3 °C, 2009
Max 1hr Temp Fall 1.6 °C 15:36 1.7 °C 3.5 °C, 2020 0.6 °C, 2009
Max 1hr Hum Fall 17% 10:41 12% 27%, 2015 1%, 2009
Max 10m Wind Speed 12.7 mph 15:20 12.1 mph 12.7 mph, 2022 6.3 mph, 2014
Minimum Feels-like 2.6 °C 05:22 0.2 °C 8.0 °C, 2020 -3.5 °C, 2019
Maximum Feels-like 16.2 °C 13:18 12.2 °C 25.7 °C, 2020 7.6 °C, 2021
Mean Feels-like 10.3 °C 6.7 °C 17.0 °C, 2020 2.3 °C, 2021
Air-frost Hrs 0 hrs 0.5 hrs 0 hrs, 2009 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 10.8 °C (+2.6) 8.3 °C (+0.3) 16.6 °C (+8.4), 2020 1.7 °C (-6.5), 2009
Humidity Range 40% 37% 57%, 2020 4%, 2009
Pressure Range 10 hPa 10 hPa 16 hPa, 2015 3 hPa, 2014
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 7 [57%]42 hrs (74%) [32%] 11 [90%], 2017 0 [0%], 2009
Wet Hours 016 hrs (95%) [6.1%] 8, 2013 0, 2010
Cloud Cover unknown
Events None
Comments blr
Extra Comments
Issues None known
Observer Absent? No
Pond Temperature (Heath) 10.0 °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.
View monthly summary

Daily Graph of Conditions

day graph

Webcam Summary of Cloud Conditions

daycamsumFull resolution individual images at up-to 5 minute intervals

Wind rose