Daily Report for 2nd September 2009

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 13.3 °C (+1.1) 04:50 14.0 °C (+1.8) 14.8 °C (+2.6), 2016 8.1 °C (-4.1), 2019
Maximum Temperature 17.3 °C (-3.7) 15:47 19.0 °C (-1.9) 25.8 °C (+4.8), 2011 17.2 °C (-3.8), 2015
Mean Temperature 14.9 °C (-1.3) 15.9 °C (-0.1) 19.1 °C, 2011 13.2 °C, 2015
Minimum Humidity 69% 16:34 57% 72%, 2012 34%, 2018
Maximum Humidity 96% 23:07 90% 96%, 2009 80%, 2017
Mean Humidity 83% 74% 83%, 2009 59%, 2017
Minimum Pressure 995 hPa 23:32 999 hPa 1026 hPa, 2013 995 hPa, 2009
Maximum Pressure 1011 hPa 03:04 1010 hPa 1028 hPa, 2013 1011 hPa, 2009
Mean Pressure 1003 hPa 1005 hPa 1027 hPa, 2013 1003 hPa, 2009
Mean Wind Speed 5.2 mph (+1.3) 5.8 mph (+1.9) 6.6 mph, 2016 0.7 mph, 2017
Maximum Wind Speed 13.8 mph 15.6 mph 15.6 mph, 2016 7.3 mph, 2017
Maximum Gust 20.8 mph 13:46 28.2 mph 22.6 mph, 2016 10.5 mph, 2017
Mean Wind Direction S
Rainfall 9.3 mm 9.6 mm (253%) 9.3 mm, 2009
Maximum Hourly Rain 3.6 mm 21:02 3.6 mm, 2009
Maximum 10-min Rain 0.8 mm 20:26 1.6 mm, 2015
Maximum Rain Rate 16 mm/h 20:04 42 mm/h, 2015
Minimum Dew Point 10.0 °C 02:53 8.6 °C 11.0 °C, 2016 5.5 °C, 2019
Maximum Dew Point 14.3 °C 23:32 13.3 °C 16.0 °C, 2011 11.3 °C, 2017
Mean Dew Point 12.1 °C 11.1 °C 13.5 °C, 2016 8.0 °C, 2017
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 13.3 °C 14.0 °C 14.8 °C, 2016 8.1 °C, 2019
Day Maximum (09-21) 17.3 °C 19.0 °C 25.8 °C, 2011 17.2 °C, 2015
Max 10m Temp Rise 0.4 °C 13:30 0.2 °C 0.7 °C, 2010 0.4 °C, 2009
Max 1hr Temp Rise 1.2 °C 12:01 0.6 °C 3.5 °C, 2010 1.2 °C, 2009
Max 1hr Hum Rise 12% 17:26 6% 18%, 2020 5%, 2012
Max 10m Temp Fall 0.5 °C 02:05 0.2 °C 0.9 °C, 2017 0.3 °C, 2010
Max 1hr Temp Fall 1.5 °C 17:21 0.8 °C 2.5 °C, 2013 0.7 °C, 2012
Max 1hr Hum Fall 10% 12:51 5% 19%, 2014 5%, 2016
Max 10m Wind Speed 9.0 mph 16:40 10.3 mph 11.6 mph, 2016 5.3 mph, 2017
Minimum Feels-like 14.6 °C 04:50 15.4 °C 17.0 °C, 2016 6.2 °C, 2019
Maximum Feels-like 20.3 °C 15:31 22.0 °C 29.2 °C, 2011 19.3 °C, 2015
Mean Feels-like 17.3 °C 17.7 °C 22.2 °C, 2011 14.5 °C, 2015
Air-frost Hrs 0 hrs 0 hrs 0 hrs, 2009 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 4.0 °C (-4.8) 5.0 °C (-3.8) 13.2 °C (+4.4), 2019 4.0 °C (-4.8), 2009
Humidity Range 27% 33% 58%, 2018 18%, 2016
Pressure Range 16 hPa 12 hPa 16 hPa, 2009 2 hPa, 2010
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 1 [8%]8 hrs (81%) [33%] 12.3 [100%], 2018 0 [0%], 2016
Wet Hours 5
[Mean rain rate: 1.9 mm/h]
5.5 hrs (201%) [11%] 5, 2009 0, 2010
Cloud Cover not available
Events None
Comments 9-11 Light, 13-14 Light, 17 Heavy, 19-22 Moderate/Heavy Rain/Showers
Extra Comments
Issues None known
Observer Absent? Yes - observations may be unreliable
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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