Daily Report for 20th July 2009

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 11.9 °C (-1.8) 05:39 13.8 °C (+0.7) 18.7 °C (+4.9), 2014 11.2 °C (-2.6), 2020
Maximum Temperature 19.7 °C (-2.9) 15:09 22.1 °C (-0.2) 30.1 °C (+7.5), 2016 18.6 °C (-4.0), 2012
Mean Temperature 16.1 °C (-2.4) 17.3 °C (+0.2) 24.3 °C, 2016 14.9 °C, 2012
Minimum Humidity 51% 14:44 52% 60%, 2012 31%, 2016
Maximum Humidity 93% 06:28 89% 95%, 2019 56%, 2010
Mean Humidity 72% 73% 78%, 2011 43%, 2010
Minimum Pressure 1012 hPa 00:18 1009 hPa 1022 hPa, 2020 1006 hPa, 2017
Maximum Pressure 1016 hPa 10:06 1014 hPa 1026 hPa, 2020 1010 hPa, 2011
Mean Pressure 1014 hPa 1012 hPa 1024 hPa, 2020 1009 hPa, 2017
Mean Wind Speed n/a (-4.3) 0.0 mph (-4.3) 8.3, 2016 2.4, 2011
Maximum Wind Speed n/a 0.0 mph 20.8, 2016 7.8, 2014
Maximum Gust n/a 0.0 mph 30.6, 2016 10.7, 2011
Mean Wind Direction n/a
Rainfall 0.0 mm 37.4 mm (138%) 9.2 mm, 2019
Maximum Hourly Rain n/a 4.6, 2011
Maximum 10-min Rain n/a 3, 2011
Maximum Rain Rate n/a 20, 2011
Minimum Dew Point 7.5 °C 19:58 9.5 °C 14.9 °C, 2014 1.0 °C, 2015
Maximum Dew Point 13.0 °C 10:08 14.7 °C 18.3 °C, 2016 10.2 °C, 2020
Mean Dew Point 10.5 °C 12.1 °C 16.4 °C, 2014 8.6 °C, 2020
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 11.9 °C 13.8 °C 20.9 °C, 2016 11.2 °C, 2020
Day Maximum (09-21) 19.7 °C 22.1 °C 30.1 °C, 2016 18.6 °C, 2012
Max 10m Temp Rise 0.4 °C 10:00 0.7 °C 0.9 °C, 2013 0.4 °C, 2009
Max 1hr Temp Rise 1.9 °C 10:29 1.6 °C 3.0 °C, 2016 1.3 °C, 2011
Max 1hr Hum Rise 6% 17:27 8% 13%, 2015 6%, 2009
Max 10m Temp Fall 0.6 °C 17:49 0.6 °C 0.9 °C, 2012 0.3 °C, 2013
Max 1hr Temp Fall 1.3 °C 19:56 1.4 °C 3.4 °C, 2016 1.1 °C, 2013
Max 1hr Hum Fall 12% 10:35 8% 17%, 2017 7%, 2010
Max 10m Wind Speed 3.7 mph 1.3 mph 16.7 mph, 2016 3.7 mph, 2009
Minimum Feels-like n/a 0.0 °C 23.5, 2014 11.6, 2020
Maximum Feels-like n/a 0.0 °C 34.8, 2016 20.5, 2011
Mean Feels-like n/a 0.0 °C 28.4, 2016 16.7, 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 7.8 °C (-1.1) 8.3 °C (-0.9) 11.4 °C (+2.5), 2016 5.1 °C (-3.8), 2017
Humidity Range 42% 37% 44%, 2017 21%, 2010
Pressure Range 4 hPa 5 hPa 11 hPa, 2010 2 hPa, 2011
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 7.3 [50%]110 hrs (91%) [37%] 14 [96%], 2020 0 [0%], 2015
Wet Hours 028 hrs (127%) [5.8%] 4, 2011 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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Webcam Summary of Cloud Conditions


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Wind rose