Daily Report for 23rd September 2020

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 10.8 °C (+0.2) 23:56 11.9 °C (+0.6) 14.4 °C (+3.8), 2019 8.1 °C (-2.5), 2014
Maximum Temperature 18.2 °C (+0.7) 12:10 21.9 °C (+2.9) 19.9 °C (+2.4), 2019 11.9 °C (-5.6), 2012
Mean Temperature 15.8 °C (+0.5) 16.8 °C (+1.7) 16.3 °C, 2009 10.1 °C, 2012
Minimum Humidity 76% 12:15 55% 77%, 2013 44%, 2016
Maximum Humidity 91% 06:09 90% 98%, 2012 82%, 2017
Mean Humidity 86% 75% 91%, 2013 63%, 2016
Minimum Pressure 998 hPa 19:12 1018 hPa 1025 hPa, 2009 997 hPa, 2012
Maximum Pressure 1006 hPa 00:03 1023 hPa 1031 hPa, 2018 1006 hPa, 2020
Mean Pressure 1001 hPa 1020 hPa 1026 hPa, 2009 1001 hPa, 2020
Mean Wind Speed 5.0 mph (+1.1) 2.9 mph (-1.0) 6.3 mph, 2019 1.2 mph, 2013
Maximum Wind Speed 16.0 mph 20:30 11.1 mph 16.0 mph, 2020 5.9 mph, 2013
Maximum Gust 25.3 mph 20:29 18.7 mph 25.3 mph, 2019 7.6 mph, 2013
Mean Wind Direction SW
Rainfall 4.6 mm 7.0 mm (16%) 21.8 mm, 2012
Maximum Hourly Rain 1.8 mm 05:37 6.4 mm, 2012
Maximum 10-min Rain 1.4 mm 05:37 2.0 mm, 2012
Maximum Rain Rate 24 mm/h 17:49 30 mm/h, 2012
Minimum Dew Point 8.5 °C 23:52 9.4 °C 12.1 °C, 2013 3.7 °C, 2012
Maximum Dew Point 15.1 °C 05:44 14.4 °C 15.9 °C, 2013 8.7 °C, 2018
Mean Dew Point 13.4 °C 12.1 °C 14.2 °C, 2013 7.4 °C, 2016
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) * 15.6 °C * 08:22 12.3 °C 15.6 °C, 2020 8.1 °C, 2014
Day Maximum (09-21) 18.2 °C 12:10 21.9 °C 19.9 °C, 2019 11.8 °C, 2012
Max 10m Temp Rise 0.3 °C 10:49 0.6 °C 0.8 °C, 2011 0.2 °C, 2018
Max 1hr Temp Rise 1.1 °C 11:03 2.5 °C 3.8 °C, 2016 1.0 °C, 2018
Max 1hr Hum Rise 10% 13:16 11% 13%, 2019 5%, 2011
Max 10m Temp Fall 0.6 °C 18:28 0.6 °C 0.6 °C, 2020 0.2 °C, 2015
Max 1hr Temp Fall 2.2 °C 18:48 2.1 °C 2.3 °C, 2016 0.7 °C, 2015
Max 1hr Hum Fall 8% 11:04 11% 15%, 2015 2%, 2012
Max 10m Wind Speed 10.6 mph 22:35 7.6 mph 11.0 mph, 2012 4.1 mph, 2013
Minimum Feels-like 11.5 °C 23:55 13.0 °C 16.6 °C, 2019 6.0 °C, 2012
Maximum Feels-like 21.6 °C 12:06 25.1 °C 23.0 °C, 2013 14.0 °C, 2012
Mean Feels-like 18.8 °C 19.3 °C 19.3 °C, 2013 10.4 °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 7.4 °C (+0.5) 10.0 °C (+2.2) 11.1 °C (+4.2), 2016 3.6 °C (-3.3), 2009
Humidity Range 15% 35% 47%, 2014 15%, 2020
Pressure Range 8 hPa 4 hPa 22 hPa, 2012 2 hPa, 2009
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 0.1 [1%]155 hrs (144%) [58%] 10 [91%], 2016 0 [0%], 2009
Wet Hours 3
[Mean rain rate: 1.5 mm/h]
8.5 hrs (27%) [1.5%] 10, 2012 0, 2009
Cloud Cover Overcast
Events None
Comments Showers
Extra Comments
Issues None known
Observer Absent? Yes - observations may be unreliable
Pond Temperature (Heath) 14.0 °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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