Daily Report for 21st September 2020

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 13.3 °C (+2.6) 09:06 12.0 °C (+0.6) 14.0 °C (+3.3), 2016 9.5 °C (-1.2), 2010
Maximum Temperature 22.3 °C (+4.6) 17:03 22.0 °C (+2.8) 22.4 °C (+4.7), 2019 15.2 °C (-2.5), 2015
Mean Temperature 16.4 °C (+3.6) 16.8 °C (+1.7) 17.5 °C, 2016 13.1 °C, 2012
Minimum Humidity 58% 17:03 54% 79%, 2013 44%, 2009
Maximum Humidity 94% 08:06 90% 95%, 2010 82%, 2019
Mean Humidity 80% 75% 87%, 2015 65%, 2019
Minimum Pressure 1016 hPa 23:57 1020 hPa 1024 hPa, 2009 997 hPa, 2018
Maximum Pressure 1021 hPa 00:00 1024 hPa 1027 hPa, 2009 1018 hPa, 2011
Mean Pressure 1018 hPa 1022 hPa 1026 hPa, 2009 1008 hPa, 2018
Mean Wind Speed 0.3 mph (-3.6) 2.8 mph (-1.1) 10.6 mph, 2018 0.3 mph, 2020
Maximum Wind Speed 5.5 mph 05:07 10.8 mph 26.7 mph, 2018 5.5 mph, 2020
Maximum Gust 10.4 mph 04:43 18.0 mph 38.0 mph, 2018 10.4 mph, 2020
Mean Wind Direction ENE
Rainfall 0.0 mm 2.4 mm (6%) 4.8 mm, 2015
Maximum Hourly Rain n/a 2.4, 2018
Maximum 10-min Rain n/a 1.3, 2018
Maximum Rain Rate n/a 26, 2018
Minimum Dew Point 11.2 °C 23:22 9.4 °C 11.2 °C, 2020 5.8 °C, 2018
Maximum Dew Point 14.4 °C 16:35 14.3 °C 16.1 °C, 2018 9.5 °C, 2012
Mean Dew Point 12.7 °C 12.0 °C 12.7 °C, 2020 7.6 °C, 2012
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) * 13.4 °C * 06:33 12.2 °C 14.2 °C, 2017 9.5 °C, 2010
Day Maximum (09-21) 22.3 °C 16:45 22.0 °C 22.4 °C, 2019 15.2 °C, 2015
Max 10m Temp Rise 0.6 °C 11:27 0.6 °C 0.8 °C, 2010 0.2 °C, 2015
Max 1hr Temp Rise 2.5 °C 12:10 2.6 °C 3.5 °C, 2010 0.5 °C, 2015
Max 1hr Hum Rise 9% 19:23 10% 19%, 2012 4%, 2013
Max 10m Temp Fall 0.6 °C 19:01 0.5 °C 1.6 °C, 2018 0.2 °C, 2015
Max 1hr Temp Fall 3.0 °C 19:41 2.1 °C 3.5 °C, 2018 1.0 °C, 2015
Max 1hr Hum Fall 11% 11:59 11% 16%, 2016 4%, 2013
Max 10m Wind Speed 2.4 mph 11:41 7.3 mph 18.4 mph, 2018 2.4 mph, 2020
Minimum Feels-like 15.6 °C 04:07 13.1 °C 15.7 °C, 2016 8.7 °C, 2013
Maximum Feels-like 25.9 °C 16:35 25.1 °C 25.9 °C, 2020 16.5 °C, 2012
Mean Feels-like 19.0 °C 19.2 °C 19.9 °C, 2016 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 9.0 °C (+2.0) 10.0 °C (+2.2) 11.8 °C (+4.8), 2010 3.9 °C (-3.1), 2015
Humidity Range 36% 36% 47%, 2009 15%, 2013
Pressure Range 4 hPa 4 hPa 22 hPa, 2018 2 hPa, 2011
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 7 [63%]146 hrs (148%) [60%] 11.2 [101%], 2019 0 [0%], 2015
Wet Hours 05.5 hrs (19%) [1.1%] 4, 2015 0, 2009
Cloud Cover am: Overcast transitioned to Sunny
pm: Sunny
Events None
Comments light am fog
Extra Comments
Issues None known
Observer Absent? Yes - observations may be unreliable
Pond Temperature (Heath) 15.0 °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, Wet hrs, Cloud cover and Events are based on manual equipment/observations (entered with a delay of 1-10 days); their reliablity is questionable and they are provided for interest only.
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