Daily Report for 18th September 2020

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 9.9 °C (-1.0) 06:50 11.8 °C (+0.3) 17.6 °C (+6.7), 2018 6.8 °C (-4.1), 2010
Maximum Temperature 20.2 °C (+2.1) 15:20 21.8 °C (+2.3) 24.2 °C (+6.1), 2014 15.3 °C (-2.8), 2013
Mean Temperature 15.2 °C (+0.5) 16.7 °C (+1.3) 19.2 °C, 2018 11.8 °C, 2011
Minimum Humidity 51% 14:23 55% 74%, 2015 37%, 2012
Maximum Humidity 87% 07:03 90% 96%, 2014 82%, 2012
Mean Humidity 72% 75% 85%, 2015 60%, 2012
Minimum Pressure 1021 hPa 18:04 1020 hPa 1029 hPa, 2019 995 hPa, 2013
Maximum Pressure 1028 hPa 00:03 1025 hPa 1032 hPa, 2019 1008 hPa, 2011
Mean Pressure 1024 hPa 1022 hPa 1030 hPa, 2019 1004 hPa, 2013
Mean Wind Speed 3.7 mph (-0.2) 2.8 mph (-1.1) 9.4 mph, 2018 1.6 mph, 2016
Maximum Wind Speed 14.7 mph 12:07 10.7 mph 19.1 mph, 2018 7.5 mph, 2019
Maximum Gust 23.0 mph 12:28 18.0 mph 33.4 mph, 2018 10.0 mph, 2011
Mean Wind Direction ENE
Rainfall 0.0 mm 2.6 mm (8%) 2.1 mm, 2015
Maximum Hourly Rain n/a 1.9, 2015
Maximum 10-min Rain n/a 1.5, 2015
Maximum Rain Rate n/a 24, 2015
Minimum Dew Point 7.8 °C 06:50 9.2 °C 13.9 °C, 2014 0.2 °C, 2012
Maximum Dew Point 12.5 °C 11:05 14.3 °C 17.7 °C, 2014 7.5 °C, 2010
Mean Dew Point 10.0 °C 12.0 °C 15.2 °C, 2014 5.4 °C, 2010
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 9.9 °C 06:48 12.0 °C 17.6 °C, 2018 6.8 °C, 2010
Day Maximum (09-21) 20.2 °C 15:12 21.8 °C 24.2 °C, 2014 15.3 °C, 2013
Max 10m Temp Rise 0.7 °C 10:02 0.6 °C 0.9 °C, 2019 0.3 °C, 2016
Max 1hr Temp Rise 3.2 °C 10:11 2.6 °C 3.9 °C, 2019 1.4 °C, 2016
Max 1hr Hum Rise 11% 19:06 11% 11%, 2017 4%, 2016
Max 10m Temp Fall 0.3 °C 11:22 0.6 °C 0.9 °C, 2015 0.2 °C, 2016
Max 1hr Temp Fall 1.3 °C 19:11 2.1 °C 2.1 °C, 2019 0.8 °C, 2016
Max 1hr Hum Fall 12% 11:24 11% 16%, 2017 6%, 2015
Max 10m Wind Speed 10.7 mph 14:33 7.4 mph 14.8 mph, 2018 5.1 mph, 2019
Minimum Feels-like 8.0 °C 06:50 12.7 °C 19.1 °C, 2018 5.2 °C, 2010
Maximum Feels-like 21.6 °C 15:06 24.9 °C 28.4 °C, 2014 15.7 °C, 2013
Mean Feels-like 16.5 °C 19.1 °C 22.9 °C, 2014 11.7 °C, 2010
Air-frost Hrs 0 hrs 0 hrs 0 hrs, 2009 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 10.3 °C (+3.1) 10.0 °C (+2.0) 11.4 °C (+4.2), 2019 4.4 °C (-2.8), 2018
Humidity Range 36% 35% 45%, 2012 18%, 2015
Pressure Range 6 hPa 4 hPa 19 hPa, 2012 2 hPa, 2010
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 10 [89%]78 hrs (92%) [37%] 11.3 [101%], 2019 0.2 [2%], 2016
Wet Hours 06 hrs (24%) [1.4%] 2.5, 2017 0, 2009
Cloud Cover unknown
Events None
Comments blr
Extra Comments
Issues None known
Observer Absent? No
Pond Temperature (Heath) 17.0 °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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