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 10.8 °C (-0.6), 2018
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 34%, 2018
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 1030 hPa, 2018 1011 hPa, 2011
Mean Pressure 1024 hPa 1016 hPa 1026 hPa, 2018 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 3.7 °C, 2018
Maximum Dew Point 11.4 °C 12:27 11.4 °C 18.9 °C, 2017 9.2 °C, 2018
Mean Dew Point 9.0 °C 8.6 °C 16.1 °C, 2017 5.9 °C, 2018
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 11.9 °C 10.7 °C 15.6 °C, 2017 10.8 °C, 2018
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 10.8, 2018
Maximum Feels-like n/a 0.0 °C 38.7, 2017 20.8, 2018
Mean Feels-like n/a 0.0 °C 29.3, 2017 15.8, 2018
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 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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