Daily Report for 11th September 2017

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 11.0 °C (-0.5) 04:49 11.2 °C (-0.6) 16.5 °C (+5.0), 2010 9.0 °C (-2.5), 2016
Maximum Temperature 19.1 °C (-0.5) 14:13 19.5 °C (-0.9) 21.5 °C (+1.9), 2016 16.3 °C (-3.3), 2013
Mean Temperature 13.8 °C (-0.5) 15.3 °C (-0.7) 18.0 °C, 2010 13.6 °C, 2013
Minimum Humidity 60% 14:16 59% 65%, 2010 37%, 2012
Maximum Humidity 91% 21:18 91% 94%, 2009 79%, 2012
Mean Humidity 80% 77% 80%, 2017 58%, 2012
Minimum Pressure 991 hPa 07:31 1006 hPa 1034 hPa, 2009 991 hPa, 2017
Maximum Pressure 1001 hPa 23:45 1014 hPa 1038 hPa, 2009 1001 hPa, 2017
Mean Pressure 994 hPa 1010 hPa 1036 hPa, 2009 994 hPa, 2017
Mean Wind Speed 8.3 mph (+4.4) 4.7 mph (+0.8) 8.3 mph, 2017 2.5 mph, 2014
Maximum Wind Speed 18.8 mph 13:33 13.5 mph 21.5 mph, 2011 7.4 mph, 2014
Maximum Gust 31.1 mph 13:06 20.8 mph 31.7 mph, 2011 9.8 mph, 2014
Mean Wind Direction WSW
Rainfall 7.0 mm 22.1 mm (106%) 7.0 mm, 2017
Maximum Hourly Rain 5.0 mm 20:17 5.0 mm, 2017
Maximum 10-min Rain 3.2 mm 20:11 3.2 mm, 2017
Maximum Rain Rate 48 mm/h 20:04 48 mm/h, 2017
Minimum Dew Point 8.0 °C 04:49 8.6 °C 12.9 °C, 2010 1.3 °C, 2012
Maximum Dew Point 13.2 °C 15:12 13.6 °C 16.6 °C, 2010 11.7 °C, 2013
Mean Dew Point 10.3 °C 11.0 °C 14.3 °C, 2010 6.8 °C, 2012
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 11.0 °C 04:49 11.5 °C 16.5 °C, 2010 9.0 °C, 2016
Day Maximum (09-21) 19.1 °C 14:13 19.5 °C 21.5 °C, 2016 16.3 °C, 2013
Max 10m Temp Rise 0.6 °C 12:45 0.6 °C 1.0 °C, 2016 0.4 °C, 2014
Max 1hr Temp Rise 1.7 °C 11:49 2.0 °C 3.7 °C, 2016 1.6 °C, 2010
Max 1hr Hum Rise 16% 15:36 11% 20%, 2015 4%, 2010
Max 10m Temp Fall 0.9 °C 14:45 0.7 °C 0.9 °C, 2016 0.2 °C, 2010
Max 1hr Temp Fall 2.5 °C 20:41 1.8 °C 3.2 °C, 2016 1.1 °C, 2010
Max 1hr Hum Fall 11% 12:46 9% 28%, 2016 6%, 2013
Max 10m Wind Speed 14.4 mph 12:51 10.0 mph 14.4 mph, 2017 4.3 mph, 2014
Minimum Feels-like 11.4 °C 04:42 11.8 °C 19.1 °C, 2010 7.3 °C, 2016
Maximum Feels-like 21.1 °C 14:13 22.0 °C 24.9 °C, 2010 17.4 °C, 2013
Mean Feels-like 15.2 °C 17.1 °C 21.6 °C, 2010 14.7 °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 8.1 °C (+0.0) 8.3 °C (-0.2) 12.5 °C (+4.4), 2016 4.5 °C (-3.6), 2010
Humidity Range 31% 32% 51%, 2015 24%, 2010
Pressure Range 10 hPa 8 hPa 10 hPa, 2017 2 hPa, 2013
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 2.5 [21%]43 hrs (81%) [33%] 11.7 [100%], 2016 0 [0%], 2014
Wet Hours 2
[Mean rain rate: 3.5 mm/h]
25 hrs (163%) [9.3%] 4, 2013 0, 2009
Cloud Cover am: Mostly Cloudy
pm: Partly Cloudy
Events Light Thunderstorm
Comments pm Heavy Showers with Thunderstorm
Extra Comments
Issues None known
Observer Absent? Yes - observations may be unreliable
Notes
Times of extremes are computed using the midpoint time of the extremum (if the value persisted for >1 minute).
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; 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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