Daily Report for 17th September 2009

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 11.3 °C (+0.2) 02:33 12.2 °C (+0.6) 17.3 °C (+6.2), 2018 7.4 °C (-3.7), 2010
Maximum Temperature 16.5 °C (-2.0) 15:22 19.1 °C (-0.6) 24.8 °C (+6.3), 2018 13.4 °C (-5.1), 2013
Mean Temperature 13.6 °C (-0.9) 15.2 °C (-0.0) 20.3 °C, 2018 11.1 °C, 2013
Minimum Humidity 57% 17:03 56% 79%, 2016 36%, 2018
Maximum Humidity 84% 08:19 90% 95%, 2013 84%, 2009
Mean Humidity 70% 74% 86%, 2014 65%, 2012
Minimum Pressure 1021 hPa 20:00 1017 hPa 1027 hPa, 2020 987 hPa, 2015
Maximum Pressure 1023 hPa 06:50 1024 hPa 1031 hPa, 2020 1005 hPa, 2013
Mean Pressure 1022 hPa 1020 hPa 1029 hPa, 2020 999 hPa, 2015
Mean Wind Speed 6.0 mph (+2.1) 6.0 mph (+2.1) 8.3 mph, 2016 2.2 mph, 2017
Maximum Wind Speed 11.5 mph 13.6 mph 20.5 mph, 2016 8.1 mph, 2014
Maximum Gust 17.7 mph 02:22 20.9 mph 30.6 mph, 2016 12.5 mph, 2014
Mean Wind Direction NE
Rainfall 0.0 mm 35.9 mm (111%) 5.5 mm, 2013
Maximum Hourly Rain n/a 2.4, 2013
Maximum 10-min Rain n/a 0.6, 2013
Maximum Rain Rate n/a 4.5, 2013
Minimum Dew Point 6.8 °C 22:26 7.9 °C 13.9 °C, 2014 2.8 °C, 2010
Maximum Dew Point 9.4 °C 11:27 12.8 °C 16.1 °C, 2018 8.4 °C, 2010
Mean Dew Point 8.1 °C 10.3 °C 14.8 °C, 2014 5.1 °C, 2010
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 11.3 °C 12.4 °C 17.3 °C, 2018 7.8 °C, 2013
Day Maximum (09-21) 16.5 °C 19.1 °C 24.8 °C, 2018 13.4 °C, 2013
Max 10m Temp Rise n/a 16:22 0.3 °C 0.7, 2013 0.3, 2016
Max 1hr Temp Rise n/a 17:11 0.5 °C 2.8, 2010 0.8, 2016
Max 1hr Hum Rise n/a 16:12 3% 15, 2020 4, 2014
Max 10m Temp Fall n/a 16:12 0.3 °C 0.5, 2010 0.2, 2014
Max 1hr Temp Fall n/a 16:12 0.5 °C 2.6, 2010 0.8, 2014
Max 1hr Hum Fall n/a 17:13 3% 26, 2012 2, 2016
Max 10m Wind Speed 9.0 mph 14:51 9.6 mph 14.0 mph, 2016 6.0 mph, 2019
Minimum Feels-like 11.6 °C 05:51 13.0 °C 20.3 °C, 2018 5.1 °C, 2013
Maximum Feels-like 17.1 °C 15:21 21.1 °C 27.5 °C, 2018 15.4 °C, 2010
Mean Feels-like 14.0 °C 16.7 °C 23.3 °C, 2018 11.3 °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 5.2 °C (-2.2) 6.9 °C (-1.2) 9.1 °C (+1.7), 2019 3.9 °C (-3.5), 2014
Humidity Range 27% 34% 52%, 2018 10%, 2016
Pressure Range 2 hPa 7 hPa 20 hPa, 2015 2 hPa, 2009
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 0.1 [1%]67 hrs (83%) [33%] 11.4 [100%], 2019 0 [0%], 2016
Wet Hours 017 hrs (74%) [4.2%] 5, 2013 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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Wind rose