Daily Report for 12th July 2009

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 14.2 °C (+1.0) 07:12 14.1 °C (+1.4) 17.2 °C (+4.0), 2019 8.9 °C (-4.3), 2020
Maximum Temperature 23.6 °C (+1.2) 15:50 22.7 °C (+0.6) 26.7 °C (+4.3), 2014 18.8 °C (-3.6), 2011
Mean Temperature 17.8 °C (+1.1) 17.8 °C (+1.0) 20.6 °C, 2019 14.5 °C, 2012
Minimum Humidity 46% 16:14 51% 61%, 2016 35%, 2020
Maximum Humidity 97% 07:25 88% 97%, 2009 74%, 2010
Mean Humidity 76% 72% 80%, 2016 59%, 2010
Minimum Pressure 1006 hPa 06:16 1010 hPa 1027 hPa, 2020 1005 hPa, 2012
Maximum Pressure 1010 hPa 22:53 1015 hPa 1030 hPa, 2020 1010 hPa, 2009
Mean Pressure 1008 hPa 1013 hPa 1029 hPa, 2020 1008 hPa, 2009
Mean Wind Speed n/a (-4.3) 0.0 mph (-4.3) 6.4, 2015 1.9, 2020
Maximum Wind Speed n/a 0.0 mph 14.5, 2016 6.9, 2013
Maximum Gust n/a 0.0 mph 21, 2016 10.9, 2013
Mean Wind Direction n/a
Rainfall 2.5 mm 20.9 mm (129%) 11.9 mm, 2012
Maximum Hourly Rain 1.1 mm 04:11 7.4 mm, 2016
Maximum 10-min Rain 0.6 mm 04:11 6.0 mm, 2016
Maximum Rain Rate 2.7 mm/h 04:11 126 mm/h, 2016
Minimum Dew Point 10.2 °C 16:36 9.5 °C 12.3 °C, 2019 6.5 °C, 2012
Maximum Dew Point 15.3 °C 08:40 15.1 °C 17.2 °C, 2014 11.7 °C, 2020
Mean Dew Point 13.0 °C 12.2 °C 14.4 °C, 2014 9.3 °C, 2020
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 14.2 °C 14.1 °C 17.3 °C, 2010 8.9 °C, 2020
Day Maximum (09-21) 23.6 °C 22.7 °C 26.7 °C, 2014 18.8 °C, 2011
Max 10m Temp Rise n/a 09:18 0.6 °C 1, 2014 0.4, 2011
Max 1hr Temp Rise n/a 10:08 1.7 °C 3.7, 2020 1.7, 2016
Max 1hr Hum Rise n/a 17:14 6% 21, 2012 7, 2019
Max 10m Temp Fall n/a 09:08 0.5 °C 0.9, 2016 0.4, 2010
Max 1hr Temp Fall n/a 17:03 1.2 °C 3.3, 2020 1.6, 2019
Max 1hr Hum Fall n/a 13:43 8% 15, 2014 7, 2016
Max 10m Wind Speed n/a 0.0 mph 11.8, 2012 5.3, 2013
Minimum Feels-like n/a 0.0 °C 20.5, 2019 9, 2020
Maximum Feels-like n/a 0.0 °C 29.7, 2014 19.7, 2012
Mean Feels-like n/a 0.0 °C 23.9, 2019 15.7, 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 9.4 °C (+0.2) 8.6 °C (-0.8) 15.7 °C (+6.4), 2020 4.5 °C (-4.8), 2011
Humidity Range 51% 37% 59%, 2020 21%, 2011
Pressure Range 4 hPa 4 hPa 17 hPa, 2017 2 hPa, 2015
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 5.8 [39%]72 hrs (98%) [40%] 13 [87%], 2020 0.1 [1%], 2015
Wet Hours 3
[Mean rain rate: 0.8 mm/h]
16 hrs (122%) [5.6%] 8, 2012 0, 2011
Cloud Cover not available
Events None
Comments Light 00-02 Rain, Moderate 03-04 Rain
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