Daily Report for 30th June 2009

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 16.1 °C (+4.1) 05:13 11.5 °C (+0.4) 17.2 °C (+5.2), 2010 8.5 °C (-3.5), 2014
Maximum Temperature 29.4 °C (+7.9) 15:30 21.3 °C (+1.1) 29.4 °C (+7.9), 2009 20.0 °C (-1.5), 2014
Mean Temperature 22.1 °C (+6.0) 16.1 °C (+0.7) 22.4 °C, 2015 14.8 °C, 2014
Minimum Humidity 34% 17:06 48% 55%, 2016 24%, 2015
Maximum Humidity 91% 06:34 87% 95%, 2014 72%, 2010
Mean Humidity 64% 69% 75%, 2016 45%, 2015
Minimum Pressure 1020 hPa 19:09 1015 hPa 1024 hPa, 2011 999 hPa, 2017
Maximum Pressure 1023 hPa 16:17 1019 hPa 1026 hPa, 2011 1010 hPa, 2016
Mean Pressure 1022 hPa 1017 hPa 1025 hPa, 2011 1004 hPa, 2017
Mean Wind Speed n/a (-4.4) 0.0 mph (-4.4) 8.5, 2012 1.8, 2014
Maximum Wind Speed n/a 0.0 mph 20.5, 2016 9, 2014
Maximum Gust n/a 0.0 mph 27.7, 2012 12.1, 2014
Mean Wind Direction n/a
Rainfall 0.0 mm 70.6 mm (128%) 0.7 mm, 2014
Maximum Hourly Rain n/a 0.7, 2014
Maximum 10-min Rain n/a 0.3, 2014
Maximum Rain Rate n/a 0.7, 2014
Minimum Dew Point 9.6 °C 22:10 7.0 °C 10.9 °C, 2010 4.8 °C, 2011
Maximum Dew Point 18.1 °C 10:20 12.7 °C 18.1 °C, 2009 9.5 °C, 2011
Mean Dew Point 14.0 °C 9.8 °C 14.0 °C, 2009 6.8 °C, 2011
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 16.1 °C 11.7 °C 17.2 °C, 2010 8.5 °C, 2014
Day Maximum (09-21) 29.4 °C 21.3 °C 29.4 °C, 2009 20.0 °C, 2014
Max 10m Temp Rise 0.8 °C 10:07 0.8 °C 0.9 °C, 2018 0.4 °C, 2016
Max 1hr Temp Rise 3.1 °C 13:14 2.5 °C 3.3 °C, 2015 1.5 °C, 2012
Max 1hr Hum Rise 13% 21:45 9% 17%, 2011 7%, 2010
Max 10m Temp Fall 1.6 °C 21:45 0.6 °C 1.6 °C, 2009 0.3 °C, 2016
Max 1hr Temp Fall 3.2 °C 21:45 1.9 °C 3.2 °C, 2009 1.2 °C, 2016
Max 1hr Hum Fall 13% 10:57 12% 17%, 2014 7%, 2017
Max 10m Wind Speed n/a 0.0 mph 16.4, 2016 5.9, 2011
Minimum Feels-like n/a 0.0 °C 19.3, 2010 8.6, 2011
Maximum Feels-like n/a 0.0 °C 30.5, 2015 20.5, 2011
Mean Feels-like n/a 0.0 °C 23.4, 2010 15.9, 2014
Air-frost Hrs 0 hrs 0 hrs 0 hrs, 2009 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 13.3 °C (+3.8) 9.8 °C (+0.7) 15.9 °C (+6.4), 2015 6.4 °C (-3.1), 2016
Humidity Range 57% 39% 57%, 2009 29%, 2017
Pressure Range 3 hPa 5 hPa 11 hPa, 2017 2 hPa, 2011
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 14.9 [99%]192 hrs (101%) [43%] 15 [99%], 2015 0.5 [3%], 2016
Wet Hours 037 hrs (99%) [5.1%] 3, 2016 0, 2009
Cloud Cover not available
Events Maximum possible sunshine
Comments -
Extra Comments
Issues Tmax corrected as unreliable
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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