Daily Report for 22nd September 2009

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 11.5 °C (+0.8) 06:06 12.1 °C (+0.6) 15.2 °C (+4.5), 2019 6.0 °C (-4.7), 2012
Maximum Temperature 19.8 °C (+2.1) 15:07 19.4 °C (+0.1) 24.4 °C (+6.7), 2020 13.8 °C (-3.9), 2018
Mean Temperature 15.8 °C (+1.4) 15.3 °C (+0.4) 17.8 °C, 2020 11.1 °C, 2012
Minimum Humidity 66% 14:53 56% 81%, 2013 45%, 2012
Maximum Humidity 90% 06:49 90% 97%, 2017 84%, 2016
Mean Humidity 79% 74% 91%, 2013 67%, 2012
Minimum Pressure 1023 hPa 05:00 1018 hPa 1026 hPa, 2013 998 hPa, 2015
Maximum Pressure 1026 hPa 23:57 1024 hPa 1029 hPa, 2013 1007 hPa, 2015
Mean Pressure 1024 hPa 1021 hPa 1028 hPa, 2013 1002 hPa, 2015
Mean Wind Speed 6.0 mph (+2.1) 5.5 mph (+1.6) 6.0 mph, 2009 1.7 mph, 2014
Maximum Wind Speed 12.3 mph 12.7 mph 14.7 mph, 2016 7.1 mph, 2014
Maximum Gust 17.7 mph 11:28 19.2 mph 26.5 mph, 2020 8.1 mph, 2014
Mean Wind Direction SW
Rainfall 0.0 mm 35.9 mm (86%) 8.8 mm, 2018
Maximum Hourly Rain n/a 2.4, 2015
Maximum 10-min Rain n/a 1.5, 2015
Maximum Rain Rate n/a 42, 2015
Minimum Dew Point 9.7 °C 05:56 8.0 °C 12.8 °C, 2013 1.7 °C, 2012
Maximum Dew Point 13.9 °C 23:52 13.0 °C 17.7 °C, 2019 8.2 °C, 2012
Mean Dew Point 12.0 °C 10.5 °C 15.2 °C, 2013 4.7 °C, 2012
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 11.5 °C 12.3 °C 16.2 °C, 2013 6.0 °C, 2012
Day Maximum (09-21) 19.8 °C 19.4 °C 24.4 °C, 2020 13.8 °C, 2018
Max 10m Temp Rise n/a 11:22 0.2 °C 0.8, 2012 0.2, 2018
Max 1hr Temp Rise n/a 12:11 0.4 °C 3.6, 2010 0.7, 2018
Max 1hr Hum Rise n/a 01:02 2% 14, 2016 5, 2015
Max 10m Temp Fall n/a 11:14 0.2 °C 1.3, 2019 0.2, 2018
Max 1hr Temp Fall n/a 01:20 0.3 °C 4.2, 2019 0.7, 2018
Max 1hr Hum Fall n/a 10:59 3% 20, 2020 1, 2018
Max 10m Wind Speed 7.6 mph 11:56 9.0 mph 11.4 mph, 2016 4.5 mph, 2014
Minimum Feels-like 12.6 °C 05:51 12.9 °C 17.8 °C, 2019 2.9 °C, 2012
Maximum Feels-like 22.9 °C 15:02 21.6 °C 28.3 °C, 2020 13.6 °C, 2018
Mean Feels-like 18.0 °C 16.9 °C 21.0 °C, 2019 10.5 °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 8.3 °C (+1.3) 7.3 °C (-0.6) 12.3 °C (+5.3), 2020 3.6 °C (-3.4), 2018
Humidity Range 24% 33% 49%, 2010 14%, 2015
Pressure Range 3 hPa 6 hPa 10 hPa, 2020 3 hPa, 2009
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 3 [27%]87 hrs (84%) [34%] 10 [90%], 2012 0 [0%], 2018
Wet Hours 017 hrs (57%) [3.2%] 10, 2018 0, 2009
Cloud Cover not available
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, 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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Daily Graph of Conditions

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