Daily Report for 21st June 2009

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 11.9 °C (+0.5) 04:33 10.5 °C (-0.3) 15.6 °C (+4.2), 2017 11.4 °C (-0.0), 2012
Maximum Temperature 21.3 °C (+0.5) 16:59 19.7 °C (-0.1) 33.0 °C (+12.2), 2017 19.8 °C (-1.0), 2012
Mean Temperature 15.9 °C (+0.5) 14.9 °C (-0.2) 24.5 °C, 2017 15.6 °C, 2012
Minimum Humidity 44% 17:02 48% 66%, 2013 36%, 2014
Maximum Humidity 82% 07:57 86% 94%, 2012 69%, 2014
Mean Humidity 65% 68% 81%, 2012 51%, 2014
Minimum Pressure 1023 hPa 11:36 1014 hPa 1023 hPa, 2009 1001 hPa, 2012
Maximum Pressure 1026 hPa 23:41 1018 hPa 1026 hPa, 2009 1011 hPa, 2011
Mean Pressure 1024 hPa 1016 hPa 1024 hPa, 2009 1006 hPa, 2012
Mean Wind Speed n/a (-4.4) 0.0 mph (-4.4) 8.2, 2011 2.4, 2010
Maximum Wind Speed n/a 0.0 mph 19.7, 2011 7.5, 2010
Maximum Gust n/a 0.0 mph 32.9, 2011 10.6, 2010
Mean Wind Direction n/a
Rainfall 0.0 mm 34.7 mm (90%) 6.9 mm, 2012
Maximum Hourly Rain n/a 4.3, 2012
Maximum 10-min Rain n/a 4.3, 2012
Maximum Rain Rate n/a 90, 2013
Minimum Dew Point 7.2 °C 02:10 6.0 °C 12.7 °C, 2017 6.0 °C, 2015
Maximum Dew Point 11.4 °C 12:27 11.4 °C 18.9 °C, 2017 10.8 °C, 2014
Mean Dew Point 9.0 °C 8.6 °C 16.1 °C, 2017 8.5 °C, 2014
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 11.9 °C 10.7 °C 15.6 °C, 2017 11.9 °C, 2009
Day Maximum (09-21) 21.3 °C 19.7 °C 33.0 °C, 2017 19.8 °C, 2012
Max 10m Temp Rise 0.9 °C 13:15 0.8 °C 1.0 °C, 2012 0.5 °C, 2010
Max 1hr Temp Rise 2.2 °C 12:38 2.4 °C 2.4 °C, 2017 1.5 °C, 2015
Max 1hr Hum Rise 9% 22:27 9% 16%, 2014 6%, 2016
Max 10m Temp Fall 0.4 °C 22:14 0.5 °C 0.8 °C, 2013 0.3 °C, 2016
Max 1hr Temp Fall 1.4 °C 19:31 1.7 °C 2.7 °C, 2013 1.1 °C, 2016
Max 1hr Hum Fall 14% 13:29 12% 16%, 2015 6%, 2010
Max 10m Wind Speed n/a 0.0 mph 15, 2011 6.1, 2017
Minimum Feels-like n/a 0.0 °C 18.2, 2017 12.4, 2012
Maximum Feels-like n/a 0.0 °C 38.7, 2017 20.9, 2015
Mean Feels-like n/a 0.0 °C 29.3, 2017 18.1, 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 9.4 °C (+0.0) 9.2 °C (+0.3) 17.4 °C (+8.0), 2017 5.6 °C (-3.8), 2015
Humidity Range 38% 38% 47%, 2015 21%, 2013
Pressure Range 3 hPa 5 hPa 10 hPa, 2012 2 hPa, 2010
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 6 [40%]116 hrs (87%) [37%] 14 [93%], 2017 1 [7%], 2012
Wet Hours 033 hrs (129%) [6.6%] 4, 2012 0, 2009
Cloud Cover not available
Events None
Comments -
Extra Comments
Issues None known
Observer Absent? No
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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