Daily Report for 23rd July 2009

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 13.6 °C (-0.3) 23:22 13.8 °C (+0.6) 19.4 °C (+5.5), 2013 10.9 °C (-3.0), 2011
Maximum Temperature 21.6 °C (-1.1) 15:25 21.9 °C (-0.4) 32.6 °C (+9.9), 2019 18.0 °C (-4.7), 2011
Mean Temperature 16.4 °C (-0.7) 17.2 °C (+0.1) 25.1 °C, 2018 14.9 °C, 2011
Minimum Humidity 58% 15:26 53% 58%, 2009 28%, 2012
Maximum Humidity 93% 06:25 90% 96%, 2019 73%, 2012
Mean Humidity 80% 74% 80%, 2009 49%, 2012
Minimum Pressure 1001 hPa 04:45 1008 hPa 1019 hPa, 2012 1001 hPa, 2009
Maximum Pressure 1008 hPa 23:15 1013 hPa 1025 hPa, 2012 1008 hPa, 2009
Mean Pressure 1004 hPa 1011 hPa 1023 hPa, 2012 1004 hPa, 2009
Mean Wind Speed n/a (-4.3) 0.0 mph (-4.3) 6.5, 2020 2.2, 2017
Maximum Wind Speed n/a 0.0 mph 14.3, 2020 8, 2010
Maximum Gust n/a 0.0 mph 23, 2020 11.4, 2010
Mean Wind Direction n/a
Rainfall 3.5 mm 43.4 mm (139%) 12.2 mm, 2013
Maximum Hourly Rain 2.2 mm 20:16 4.6 mm, 2013
Maximum 10-min Rain 1.4 mm 19:49 2.7 mm, 2013
Maximum Rain Rate 16 mm/h 19:42 60 mm/h, 2013
Minimum Dew Point 11.5 °C 21:20 9.6 °C 14.6 °C, 2019 3.5 °C, 2011
Maximum Dew Point 15.0 °C 13:44 14.8 °C 20.8 °C, 2013 10.7 °C, 2015
Mean Dew Point 12.8 °C 12.2 °C 17.1 °C, 2013 7.8 °C, 2011
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) * 13.9 °C * 13.9 °C 19.4 °C, 2013 10.9 °C, 2011
Day Maximum (09-21) 21.6 °C 21.9 °C 32.6 °C, 2019 18.0 °C, 2011
Max 10m Temp Rise 0.9 °C 13:35 0.7 °C 0.9 °C, 2009 0.6 °C, 2010
Max 1hr Temp Rise 2.5 °C 14:13 1.7 °C 3.9 °C, 2016 2.0 °C, 2010
Max 1hr Hum Rise 15% 18:31 8% 16%, 2018 6%, 2015
Max 10m Temp Fall 1.4 °C 15:45 0.7 °C 1.4 °C, 2009 0.4 °C, 2014
Max 1hr Temp Fall 2.7 °C 20:42 1.4 °C 2.7 °C, 2009 1.3 °C, 2015
Max 1hr Hum Fall 11% 14:31 8% 15%, 2013 8%, 2018
Max 10m Wind Speed 4.0 mph 1.7 mph 10.5 mph, 2020 4.0 mph, 2009
Minimum Feels-like n/a 0.0 °C 23.2, 2013 11.7, 2011
Maximum Feels-like n/a 0.0 °C 38.1, 2019 18.1, 2011
Mean Feels-like n/a 0.0 °C 30.2, 2019 15.4, 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 8.0 °C (-0.8) 8.1 °C (-1.0) 16.7 °C (+7.9), 2019 7.1 °C (-1.7), 2011
Humidity Range 35% 37% 61%, 2019 30%, 2017
Pressure Range 7 hPa 5 hPa 9 hPa, 2019 2 hPa, 2016
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 5.8 [40%]120 hrs (87%) [35%] 14.5 [100%], 2019 1 [7%], 2010
Wet Hours 1.5
[Mean rain rate: 2.3 mm/h]
33 hrs (132%) [6%] 4, 2013 0, 2010
Cloud Cover not available
Events Light Thunderstorm
Comments 1930 Thunderstormtorm , VHeavy Rain; Moderate pm Showers
Extra Comments 2 rumbles and an IC flash
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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Webcam Summary of Cloud Conditions


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Wind rose