Daily Report for 27th August 2009

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 16.0 °C (+3.3) 06:23 14.4 °C (+1.1) 16.1 °C (+3.4), 2019 10.5 °C (-2.2), 2014
Maximum Temperature 22.5 °C (+0.9) 14:36 22.8 °C (+0.5) 31.7 °C (+10.1), 2019 17.3 °C (-4.3), 2010
Mean Temperature 17.9 °C (+2.1) 18.2 °C (+0.8) 24.1 °C, 2019 14.0 °C, 2010
Minimum Humidity 53% 16:33 52% 70%, 2020 39%, 2019
Maximum Humidity 91% 00:04 90% 98%, 2010 73%, 2017
Mean Humidity 76% 74% 85%, 2010 58%, 2017
Minimum Pressure 1010 hPa 23:03 1014 hPa 1018 hPa, 2017 1002 hPa, 2020
Maximum Pressure 1014 hPa 10:41 1018 hPa 1021 hPa, 2017 1011 hPa, 2015
Mean Pressure 1012 hPa 1016 hPa 1019 hPa, 2017 1007 hPa, 2015
Mean Wind Speed 5.8 mph (+1.8) 3.8 mph (-0.2) 5.8 mph, 2009 1.4 mph, 2017
Maximum Wind Speed 15.0 mph 10.5 mph 16.5 mph, 2016 6.1 mph, 2017
Maximum Gust 23.0 mph 18:42 15.6 mph 25.8 mph, 2016 9.4 mph, 2017
Mean Wind Direction SW
Rainfall 0.0 mm 39.9 mm (86%) 4.2 mm, 2020
Maximum Hourly Rain n/a 1.9, 2020
Maximum 10-min Rain n/a 1.8, 2015
Maximum Rain Rate n/a 42, 2015
Minimum Dew Point 10.4 °C 19:31 10.5 °C 14.0 °C, 2019 6.4 °C, 2013
Maximum Dew Point 15.5 °C 00:04 15.5 °C 18.7 °C, 2019 12.8 °C, 2011
Mean Dew Point 13.3 °C 13.0 °C 16.3 °C, 2019 10.5 °C, 2013
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 16.0 °C 14.4 °C 16.1 °C, 2019 10.5 °C, 2014
Day Maximum (09-21) 22.5 °C 22.8 °C 31.7 °C, 2019 17.3 °C, 2010
Max 10m Temp Rise n/a 18:59 0.5 °C 0.8, 2012 0.4, 2015
Max 1hr Temp Rise n/a 13:55 1.5 °C 3.6, 2019 1.6, 2010
Max 1hr Hum Rise n/a 19:59 8% 16, 2019 4, 2018
Max 10m Temp Fall n/a 19:09 0.5 °C 0.7, 2013 0.2, 2014
Max 1hr Temp Fall n/a 17:55 1.5 °C 3.5, 2017 0.8, 2014
Max 1hr Hum Fall n/a 13:55 8% 18, 2014 6, 2017
Max 10m Wind Speed 10.3 mph 17:18 7.4 mph 12.8 mph, 2016 4.2 mph, 2017
Minimum Feels-like 18.0 °C 21:34 15.9 °C 19.5 °C, 2019 11.5 °C, 2014
Maximum Feels-like 25.9 °C 14:25 25.3 °C 37.9 °C, 2019 19.1 °C, 2010
Mean Feels-like 20.9 °C 20.3 °C 29.0 °C, 2019 15.8 °C, 2011
Air-frost Hrs 0 hrs 0 hrs 0 hrs, 2009 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 6.5 °C (-2.4) 8.4 °C (-0.6) 15.6 °C (+6.7), 2019 4.7 °C (-4.2), 2020
Humidity Range 38% 38% 52%, 2013 24%, 2020
Pressure Range 4 hPa 4 hPa 17 hPa, 2020 3 hPa, 2013
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 4 [32%]134 hrs (84%) [37%] 11.5 [91%], 2019 1 [8%], 2010
Wet Hours 020 hrs (60%) [3.1%] 7, 2010 0, 2009
Cloud Cover not available
Events None
Comments -
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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