Daily Report for 21st May 2018

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 8.0 °C (-0.8) 05:18 7.5 °C (-0.0) 13.5 °C (+4.7), 2016 5.5 °C (-3.3), 2015
Maximum Temperature 22.4 °C (+5.2) 18:26 19.7 °C (+3.6) 24.3 °C (+7.1), 2010 15.9 °C (-1.3), 2013
Mean Temperature 16.0 °C (+2.2) 14.0 °C (+1.8) 18.2 °C, 2010 12.1 °C, 2012
Minimum Humidity 40% 18:44 42% 71%, 2012 30%, 2015
Maximum Humidity 93% 05:52 89% 93%, 2012 81%, 2015
Mean Humidity 70% 65% 83%, 2012 55%, 2011
Minimum Pressure 1015 hPa 17:30 1016 hPa 1029 hPa, 2010 1001 hPa, 2014
Maximum Pressure 1021 hPa 00:10 1022 hPa 1032 hPa, 2010 1010 hPa, 2012
Mean Pressure 1017 hPa 1019 hPa 1030 hPa, 2010 1008 hPa, 2014
Mean Wind Speed 2.2 mph (-2.5) 3.8 mph (-0.9) 5.4 mph, 2011 2.2 mph, 2018
Maximum Wind Speed 10.6 mph 18:44 11.5 mph 14.5 mph, 2011 8.4 mph, 2010
Maximum Gust 15.0 mph 18:32 18.0 mph 25.8 mph, 2016 12.0 mph, 2010
Mean Wind Direction ENE
Rainfall 0.0 mm 12.8 mm (37%) 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 6.6 °C 05:13 4.4 °C 9.5 °C, 2010 1.2 °C, 2015
Maximum Dew Point 13.8 °C 15:45 9.9 °C 15.1 °C, 2010 7.6 °C, 2015
Mean Dew Point 10.1 °C 7.0 °C 12.2 °C, 2010 3.8 °C, 2015
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 8.0 °C 05:18 7.9 °C 13.5 °C, 2016 5.5 °C, 2015
Day Maximum (09-21) 22.4 °C 18:26 19.7 °C 24.3 °C, 2010 14.1 °C, 2013
Max 10m Temp Rise 0.7 °C 09:37 0.8 °C 1.7 °C, 2010 0.4 °C, 2012
Max 1hr Temp Rise 3.1 °C 08:46 2.9 °C 5.7 °C, 2011 1.0 °C, 2016
Max 1hr Hum Rise 14% 19:44 11% 14%, 2018 4%, 2012
Max 10m Temp Fall 0.5 °C 21:05 0.6 °C 1.0 °C, 2010 0.2 °C, 2012
Max 1hr Temp Fall 2.0 °C 21:47 2.1 °C 2.0 °C, 2018 0.7 °C, 2012
Max 1hr Hum Fall 19% 17:27 16% 25%, 2010 5%, 2012
Max 10m Wind Speed 6.6 mph 18:35 8.5 mph 9.4 mph, 2011 6.6 mph, 2018
Minimum Feels-like 6.9 °C 04:26 6.1 °C 14.8 °C, 2010 3.0 °C, 2015
Maximum Feels-like 23.9 °C 13:23 20.6 °C 26.9 °C, 2010 17.9 °C, 2012
Mean Feels-like 17.3 °C 14.1 °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 14.4 °C (+6.0) 12.2 °C (+3.7) 14.6 °C (+6.2), 2015 4.2 °C (-4.2), 2016
Humidity Range 53% 46% 53%, 2009 17%, 2013
Pressure Range 6 hPa 5 hPa 10 hPa, 2014 2 hPa, 2012
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 7 [49%]195 hrs (154%) [67%] 13.5 [94%], 2011 0.4 [3%], 2016
Wet Hours 017 hrs (61%) [3.3%] 0.5, 2014 0, 2009
Cloud Cover Partly Cloudy
Events None
Comments -
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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