Daily Report for 21st May 2017

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 9.6 °C (+0.8) 05:34 9.1 °C (+1.5) 13.5 °C (+4.7), 2016 5.5 °C (-3.3), 2015
Maximum Temperature 20.7 °C (+3.5) 17:32 16.9 °C (+0.9) 24.3 °C (+7.1), 2010 15.9 °C (-1.3), 2013
Mean Temperature 15.3 °C (+2.2) 12.8 °C (+1.2) 18.2 °C, 2010 12.1 °C, 2012
Minimum Humidity 42% 19:00 54% 71%, 2012 30%, 2015
Maximum Humidity 83% 06:08 83% 93%, 2012 81%, 2015
Mean Humidity 62% 70% 83%, 2012 55%, 2011
Minimum Pressure 1020 hPa 21:25 1012 hPa 1029 hPa, 2010 1001 hPa, 2014
Maximum Pressure 1027 hPa 09:29 1020 hPa 1032 hPa, 2010 1010 hPa, 2012
Mean Pressure 1024 hPa 1016 hPa 1030 hPa, 2010 1008 hPa, 2014
Mean Wind Speed 4.5 mph (-0.2) 4.4 mph (-0.3) 5.4 mph, 2011 2.9 mph, 2010
Maximum Wind Speed 10.6 mph 10:30 11.5 mph 14.5 mph, 2011 8.4 mph, 2010
Maximum Gust 15.7 mph 10:31 17.8 mph 25.8 mph, 2016 12.0 mph, 2010
Mean Wind Direction SSW
Rainfall 0.0 mm 65.8 mm (190%) 0.4 mm, 2014
Maximum Hourly Rain n/a 0.4, 2014
Maximum 10-min Rain n/a 0.4, 2014
Maximum Rain Rate n/a 1.5, 2014
Minimum Dew Point 5.8 °C 19:37 4.9 °C 9.5 °C, 2010 1.2 °C, 2015
Maximum Dew Point 9.6 °C 08:51 9.4 °C 15.1 °C, 2010 7.6 °C, 2015
Mean Dew Point 7.6 °C 7.2 °C 12.2 °C, 2010 3.8 °C, 2015
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 9.6 °C 05:34 9.4 °C 13.5 °C, 2016 5.5 °C, 2015
Day Maximum (09-21) 20.7 °C 17:32 16.9 °C 24.3 °C, 2010 14.1 °C, 2013
Max 10m Temp Rise 0.7 °C 09:51 0.6 °C 1.7 °C, 2010 0.4 °C, 2012
Max 1hr Temp Rise 2.6 °C 10:30 2.0 °C 5.7 °C, 2011 1.0 °C, 2016
Max 1hr Hum Rise 11% 22:44 9% 11%, 2010 4%, 2012
Max 10m Temp Fall 0.4 °C 22:12 0.5 °C 1.0 °C, 2010 0.2 °C, 2012
Max 1hr Temp Fall 1.7 °C 22:47 1.7 °C 1.9 °C, 2013 0.7 °C, 2012
Max 1hr Hum Fall 14% 10:01 10% 25%, 2010 5%, 2012
Max 10m Wind Speed 7.7 mph 15:38 8.7 mph 9.4 mph, 2011 7.0 mph, 2016
Minimum Feels-like 7.4 °C 05:29 7.7 °C 14.8 °C, 2010 3.0 °C, 2015
Maximum Feels-like 21.3 °C 16:11 17.7 °C 26.9 °C, 2010 17.9 °C, 2012
Mean Feels-like 15.5 °C 13.0 °C 20.5 °C, 2010 12.5 °C, 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 11.1 °C (+2.7) 7.8 °C (-0.6) 14.6 °C (+6.2), 2015 4.2 °C (-4.2), 2016
Humidity Range 41% 29% 53%, 2009 17%, 2013
Pressure Range 7 hPa 8 hPa 10 hPa, 2014 2 hPa, 2012
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 10 [69%]83 hrs (66%) [28%] 13.5 [94%], 2011 0.4 [3%], 2016
Wet Hours 039 hrs (144%) [7.7%] 0.5, 2014 0, 2009
Cloud Cover am: Partly Cloudy
pm: Mostly Sunny
Events None
Comments -
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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