Daily Report for 18th June 2009

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 11.1 °C (-0.1) 05:07 10.4 °C (-0.3) 18.8 °C (+7.6), 2017 10.9 °C (-0.3), 2010
Maximum Temperature 18.6 °C (-1.9) 12:48 19.7 °C (+0.1) 31.8 °C (+11.3), 2017 16.3 °C (-4.2), 2016
Mean Temperature 15.0 °C (-1.0) 14.8 °C (-0.1) 25.9 °C, 2017 13.9 °C, 2010
Minimum Humidity 46% 17:57 49% 68%, 2016 39%, 2017
Maximum Humidity 91% 06:13 87% 95%, 2011 74%, 2017
Mean Humidity 66% 69% 81%, 2016 54%, 2017
Minimum Pressure 1016 hPa 19:56 1013 hPa 1024 hPa, 2014 996 hPa, 2011
Maximum Pressure 1019 hPa 08:03 1018 hPa 1027 hPa, 2014 1005 hPa, 2011
Mean Pressure 1018 hPa 1015 hPa 1026 hPa, 2014 1000 hPa, 2011
Mean Wind Speed n/a (-4.4) 0.0 mph (-4.4) 7.8, 2018 1.1, 2017
Maximum Wind Speed n/a 0.0 mph 16.6, 2011 5.7, 2017
Maximum Gust n/a 0.0 mph 25.9, 2011 8.4, 2017
Mean Wind Direction n/a
Rainfall 0.0 mm 34.6 mm (105%) 2.3 mm, 2012
Maximum Hourly Rain n/a 1.1, 2012
Maximum 10-min Rain n/a 0.5, 2012
Maximum Rain Rate n/a 30, 2012
Minimum Dew Point 5.2 °C 19:21 5.9 °C 13.8 °C, 2017 4.7 °C, 2015
Maximum Dew Point 11.3 °C 00:02 11.6 °C 17.3 °C, 2017 11.2 °C, 2012
Mean Dew Point 8.2 °C 8.7 °C 15.6 °C, 2017 8.2 °C, 2009
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 11.1 °C 10.6 °C 18.8 °C, 2017 10.9 °C, 2010
Day Maximum (09-21) 18.6 °C 19.7 °C 31.8 °C, 2017 16.3 °C, 2016
Max 10m Temp Rise 0.6 °C 12:45 0.8 °C 0.8 °C, 2013 0.4 °C, 2016
Max 1hr Temp Rise 2.2 °C 10:17 2.5 °C 2.5 °C, 2017 1.0 °C, 2016
Max 1hr Hum Rise 7% 23:20 9% 17%, 2011 4%, 2013
Max 10m Temp Fall 0.3 °C 18:21 0.6 °C 0.7 °C, 2015 0.3 °C, 2009
Max 1hr Temp Fall 1.0 °C 19:04 1.7 °C 1.9 °C, 2014 1.0 °C, 2009
Max 1hr Hum Fall 16% 10:17 11% 16%, 2009 5%, 2016
Max 10m Wind Speed n/a 0.0 mph 12.8, 2011 3.7, 2017
Minimum Feels-like n/a 0.0 °C 22.1, 2017 10.9, 2010
Maximum Feels-like n/a 0.0 °C 36.7, 2017 18.2, 2016
Mean Feels-like n/a 0.0 °C 30.3, 2017 15.1, 2010
Air-frost Hrs 0 hrs 0 hrs 0 hrs, 2009 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 7.5 °C (-1.8) 9.3 °C (+0.5) 13.0 °C (+3.7), 2017 4.1 °C (-5.2), 2016
Humidity Range 45% 38% 47%, 2018 17%, 2010
Pressure Range 3 hPa 5 hPa 11 hPa, 2016 2 hPa, 2010
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 4.5 [30%]99 hrs (87%) [37%] 11 [73%], 2017 0.1 [1%], 2016
Wet Hours 032 hrs (145%) [7.5%] 3, 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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Daily Graph of Conditions

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