Daily Report for 6th June 2018

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 8.3 °C (-2.2) 05:06 12.8 °C (+2.5) 15.8 °C (+5.3), 2010 6.6 °C (-3.9), 2014
Maximum Temperature 22.7 °C (+3.6) 17:36 22.3 °C (+3.4) 23.3 °C (+4.2), 2016 13.3 °C (-5.8), 2020
Mean Temperature 15.4 °C (+0.7) 17.3 °C (+2.9) 18.7 °C, 2021 10.5 °C, 2020
Minimum Humidity 49% 16:21 56% 66%, 2011 32%, 2016
Maximum Humidity 90% 04:42 92% 96%, 2009 73%, 2015
Mean Humidity 72% 77% 83%, 2009 49%, 2015
Minimum Pressure 1015 hPa 18:37 1017 hPa 1024 hPa, 2021 987 hPa, 2017
Maximum Pressure 1018 hPa 00:39 1019 hPa 1029 hPa, 2015 1004 hPa, 2020
Mean Pressure 1016 hPa 1018 hPa 1026 hPa, 2021 996 hPa, 2017
Mean Wind Speed 4.0 mph (-0.4) 3.6 mph (-0.8) 9.8 mph, 2017 0.9 mph, 2021
Maximum Wind Speed 10.7 mph 08:42 10.2 mph 21.8 mph, 2017 7.2 mph, 2021
Maximum Gust 16.1 mph 13:46 15.2 mph 37.7 mph, 2017 10.3 mph, 2021
Mean Wind Direction NE
Rainfall 0.0 mm 0.0 mm (0%) 17.5 mm, 2017
Maximum Hourly Rain n/a 8.2, 2020
Maximum 10-min Rain n/a 6.6, 2020
Maximum Rain Rate n/a 102, 2020
Minimum Dew Point 6.6 °C 05:20 10.6 °C 11.3 °C, 2021 0.0 °C, 2015
Maximum Dew Point 13.8 °C 19:48 14.8 °C 15.9 °C, 2021 6.9 °C, 2015
Mean Dew Point 9.9 °C 12.8 °C 13.4 °C, 2021 3.5 °C, 2015
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 8.3 °C 05:05 13.1 °C 15.8 °C, 2010 6.6 °C, 2014
Day Maximum (09-21) 22.7 °C 17:37 22.3 °C 23.3 °C, 2016 13.3 °C, 2020
Max 10m Temp Rise 0.8 °C 08:39 0.6 °C 0.9 °C, 2014 0.4 °C, 2009
Max 1hr Temp Rise 2.6 °C 09:21 2.3 °C 3.5 °C, 2014 1.4 °C, 2009
Max 1hr Hum Rise 16% 20:17 10% 19%, 2017 4%, 2009
Max 10m Temp Fall 0.5 °C 19:37 0.5 °C 2.2 °C, 2020 0.2 °C, 2009
Max 1hr Temp Fall 1.9 °C 20:27 1.8 °C 3.7 °C, 2020 0.7 °C, 2009
Max 1hr Hum Fall 9% 09:23 11% 19%, 2017 7%, 2020
Max 10m Wind Speed 7.8 mph 08:48 7.5 mph 15.5 mph, 2017 4.6 mph, 2021
Minimum Feels-like 5.5 °C 05:54 14.2 °C 17.5 °C, 2010 3.6 °C, 2020
Maximum Feels-like 25.8 °C 17:25 25.5 °C 27.0 °C, 2021 14.4 °C, 2020
Mean Feels-like 16.4 °C 20.0 °C 21.8 °C, 2021 9.9 °C, 2020
Air-frost Hrs 0 hrs 0 hrs 0 hrs, 2009 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 14.4 °C (+5.8) 9.4 °C (+0.9) 16.2 °C (+7.6), 2014 5.4 °C (-3.2), 2012
Humidity Range 41% 36% 57%, 2016 29%, 2011
Pressure Range 3 hPa 2 hPa 18 hPa, 2017 2 hPa, 2021
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 10.5 [70%]30 hrs (86%) [34%] 13 [87%], 2016 0.2 [1%], 2009
Wet Hours 00 hrs (0%) [0%] 11, 2017 0, 2010
Cloud Cover am: Mostly Cloudy transitioned to Sunny
pm: Sunny transitioned to Mostly Sunny
Events None
Comments -
Extra Comments
Issues None known
Observer Absent? No
Pond Temperature (Heath) 0.0 °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

day graph

Webcam Summary of Cloud Conditions

daycamsumLarge resolution version

Wind rose