Daily Report for 20th August 2017

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 11.1 °C (-2.0) 06:29 13.4 °C (-0.1) 17.4 °C (+4.3), 2012 8.6 °C (-4.5), 2014
Maximum Temperature 21.1 °C (-1.1) 16:06 21.4 °C (-1.1) 24.9 °C (+2.7), 2012 18.9 °C (-3.3), 2014
Mean Temperature 16.0 °C (-1.6) 17.3 °C (-0.6) 20.5 °C, 2012 13.8 °C, 2014
Minimum Humidity 44% 16:03 50% 72%, 2010 34%, 2013
Maximum Humidity 80% 23:34 81% 92%, 2015 80%, 2013
Mean Humidity 63% 66% 84%, 2015 56%, 2013
Minimum Pressure 1020 hPa 00:04 1014 hPa 1026 hPa, 2013 1004 hPa, 2016
Maximum Pressure 1023 hPa 16:20 1019 hPa 1028 hPa, 2013 1009 hPa, 2016
Mean Pressure 1022 hPa 1016 hPa 1027 hPa, 2013 1006 hPa, 2016
Mean Wind Speed 3.8 mph (-0.2) 4.4 mph (+0.4) 13.5 mph, 2016 2.3 mph, 2013
Maximum Wind Speed 10.2 mph 21:00 12.2 mph 26.4 mph, 2016 7.8 mph, 2013
Maximum Gust 15.7 mph 10:36 18.8 mph 45.2 mph, 2016 10.2 mph, 2013
Mean Wind Direction W
Rainfall 3.3 mm 72.6 mm (212%) 4.6 mm, 2011
Maximum Hourly Rain 2.0 mm 22:44 3.6 mm, 2011
Maximum 10-min Rain 0.8 mm 21:58 1.4 mm, 2011
Maximum Rain Rate 12 mm/h 21:21 15 mm/h, 2011
Minimum Dew Point 6.4 °C 00:47 7.6 °C 13.7 °C, 2015 2.6 °C, 2014
Maximum Dew Point 11.0 °C 23:34 13.0 °C 17.6 °C, 2010 8.6 °C, 2014
Mean Dew Point 8.7 °C 10.4 °C 15.7 °C, 2015 5.3 °C, 2014
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 11.1 °C 06:29 13.5 °C 17.4 °C, 2012 8.6 °C, 2014
Day Maximum (09-21) 21.1 °C 16:06 21.4 °C 24.9 °C, 2012 18.9 °C, 2014
Max 10m Temp Rise 0.6 °C 10:23 0.6 °C 0.7 °C, 2013 0.4 °C, 2010
Max 1hr Temp Rise 2.4 °C 10:23 2.1 °C 2.9 °C, 2013 1.2 °C, 2010
Max 1hr Hum Rise 10% 19:23 8% 12%, 2011 4%, 2010
Max 10m Temp Fall 0.4 °C 19:17 0.6 °C 0.8 °C, 2016 0.2 °C, 2010
Max 1hr Temp Fall 1.8 °C 19:34 1.8 °C 3.2 °C, 2013 0.4 °C, 2010
Max 1hr Hum Fall 11% 10:44 10% 15%, 2013 2%, 2010
Max 10m Wind Speed 8.0 mph 21:24 9.1 mph 21.9 mph, 2016 6.3 mph, 2013
Minimum Feels-like 11.1 °C 06:08 14.2 °C 20.6 °C, 2012 6.9 °C, 2014
Maximum Feels-like 21.8 °C 14:56 23.3 °C 28.7 °C, 2012 18.9 °C, 2014
Mean Feels-like 16.8 °C 18.8 °C 24.2 °C, 2012 13.8 °C, 2014
Air-frost Hrs 0 hrs 0 hrs 0 hrs, 2009 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 10.0 °C (+0.9) 8.0 °C (-1.0) 13.1 °C (+4.0), 2013 4.2 °C (-4.9), 2010
Humidity Range 36% 32% 48%, 2014 16%, 2010
Pressure Range 3 hPa 6 hPa 8 hPa, 2009 2 hPa, 2013
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 7 [54%]113 hrs (94%) [42%] 10 [77%], 2013 0.2 [2%], 2015
Wet Hours 4
[Mean rain rate: 0.8 mm/h]
32 hrs (128%) [6.6%] 4, 2017 0, 2009
Cloud Cover am: Sunny
pm: Mostly Cloudy transitioned to Overcast
Events None
Comments 19- Rain
Extra Comments
Issues Rn data from N16
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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