Daily Report for 9th September 2017

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 10.4 °C (-1.3) 05:23 11.5 °C (-0.4) 15.7 °C (+4.0), 2011 9.3 °C (-2.4), 2013
Maximum Temperature 18.1 °C (-1.9) 14:39 19.8 °C (-0.7) 27.6 °C (+7.6), 2012 12.9 °C (-7.1), 2013
Mean Temperature 13.6 °C (-1.6) 15.7 °C (-0.6) 18.5 °C, 2011 11.1 °C, 2013
Minimum Humidity 56% 14:46 58% 84%, 2013 30%, 2012
Maximum Humidity 92% 05:32 90% 96%, 2011 82%, 2009
Mean Humidity 80% 76% 92%, 2013 60%, 2012
Minimum Pressure 996 hPa 03:45 1009 hPa 1021 hPa, 2009 996 hPa, 2017
Maximum Pressure 1002 hPa 23:45 1016 hPa 1033 hPa, 2009 1002 hPa, 2017
Mean Pressure 998 hPa 1013 hPa 1027 hPa, 2009 998 hPa, 2017
Mean Wind Speed 4.8 mph (+0.9) 4.1 mph (+0.2) 11.4 mph, 2016 1.7 mph, 2014
Maximum Wind Speed 12.2 mph 14:13 12.2 mph 21.9 mph, 2016 7.8 mph, 2014
Maximum Gust 18.4 mph 10:59 18.4 mph 33.9 mph, 2016 10.7 mph, 2014
Mean Wind Direction W
Rainfall 0.4 mm 14.9 mm (87%) 6.8 mm, 2013
Maximum Hourly Rain 0.4 mm 15:41 3.6 mm, 2011
Maximum 10-min Rain 0.4 mm 15:41 1.9 mm, 2011
Maximum Rain Rate 12 mm/h 15:41 20 mm/h, 2011
Minimum Dew Point 8.9 °C 04:50 8.7 °C 14.6 °C, 2011 5.4 °C, 2009
Maximum Dew Point 11.9 °C 15:57 13.7 °C 17.7 °C, 2011 11.9 °C, 2017
Mean Dew Point 9.9 °C 11.1 °C 15.9 °C, 2011 9.1 °C, 2009
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 10.4 °C 05:23 11.8 °C 15.7 °C, 2011 9.3 °C, 2013
Day Maximum (09-21) 18.1 °C 14:39 19.8 °C 27.6 °C, 2012 12.9 °C, 2013
Max 10m Temp Rise 0.6 °C 09:14 0.6 °C 0.9 °C, 2012 0.3 °C, 2011
Max 1hr Temp Rise 2.5 °C 09:34 2.0 °C 4.7 °C, 2012 1.0 °C, 2013
Max 1hr Hum Rise 19% 15:57 10% 19%, 2017 3%, 2011
Max 10m Temp Fall 0.9 °C 15:45 0.7 °C 0.9 °C, 2017 0.2 °C, 2013
Max 1hr Temp Fall 2.0 °C 16:04 1.7 °C 2.8 °C, 2012 0.9 °C, 2013
Max 1hr Hum Fall 11% 09:42 9% 26%, 2015 5%, 2013
Max 10m Wind Speed 9.5 mph 14:44 9.0 mph 17.2 mph, 2016 5.6 mph, 2014
Minimum Feels-like 11.2 °C 04:55 12.4 °C 19.4 °C, 2011 7.8 °C, 2013
Maximum Feels-like 19.4 °C 14:32 22.4 °C 28.4 °C, 2012 15.2 °C, 2013
Mean Feels-like 14.8 °C 17.6 °C 23.1 °C, 2011 12.3 °C, 2013
Air-frost Hrs 0 hrs 0 hrs 0 hrs, 2009 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 7.7 °C (-0.6) 8.3 °C (-0.2) 17.5 °C (+9.2), 2012 3.6 °C (-4.7), 2013
Humidity Range 36% 32% 54%, 2012 11%, 2013
Pressure Range 6 hPa 7 hPa 12 hPa, 2009 2 hPa, 2011
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 7 [59%]37 hrs (84%) [34%] 10 [84%], 2012 0.3 [3%], 2013
Wet Hours 0.5
[Mean rain rate: 0.8 mm/h]
22 hrs (175%) [10%] 5, 2013 0, 2009
Cloud Cover am: Sunny transitioned to Mostly Sunny
pm: Partly Cloudy
Events None
Comments 1530 Shower
Extra Comments
Issues None known
Observer Absent? Yes - observations may be unreliable
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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