Daily Report for 27th June 2009

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 15.1 °C (+3.3) 05:38 11.1 °C (+0.1) 18.2 °C (+6.4), 2011 10.0 °C (-1.8), 2013
Maximum Temperature 26.1 °C (+4.8) 13:50 20.8 °C (+0.7) 31.9 °C (+10.6), 2011 20.0 °C (-1.3), 2017
Mean Temperature 19.3 °C (+4.1) 15.7 °C (+0.4) 25.4 °C, 2011 15.0 °C, 2013
Minimum Humidity 44% 16:31 47% 64%, 2012 29%, 2010
Maximum Humidity 94% 22:58 86% 94%, 2009 79%, 2015
Mean Humidity 76% 68% 78%, 2020 55%, 2010
Minimum Pressure 1014 hPa 08:54 1015 hPa 1028 hPa, 2019 1002 hPa, 2017
Maximum Pressure 1016 hPa 22:39 1019 hPa 1031 hPa, 2019 1009 hPa, 2020
Mean Pressure 1015 hPa 1017 hPa 1030 hPa, 2019 1006 hPa, 2020
Mean Wind Speed n/a (-4.4) 0.0 mph (-4.4) 9.3, 2020 3, 2017
Maximum Wind Speed n/a 0.0 mph 21.1, 2020 8.7, 2010
Maximum Gust n/a 0.0 mph 34.6, 2020 11.5, 2017
Mean Wind Direction n/a
Rainfall 35.8 mm 70.5 mm (142%) 35.8 mm, 2009
Maximum Hourly Rain 33.3 mm 18:30 33.3 mm, 2009
Maximum 10-min Rain 8.0 mm 18:28 8.0 mm, 2009
Maximum Rain Rate 96 mm/h 18:23 96 mm/h, 2009
Minimum Dew Point 12.3 °C 16:39 6.5 °C 14.1 °C, 2012 5.9 °C, 2013
Maximum Dew Point 17.0 °C 17:52 12.1 °C 18.2 °C, 2011 10.9 °C, 2013
Mean Dew Point 14.5 °C 9.2 °C 15.7 °C, 2012 8.5 °C, 2013
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 15.1 °C 11.3 °C 18.2 °C, 2011 10.0 °C, 2013
Day Maximum (09-21) 26.1 °C 20.8 °C 31.9 °C, 2011 20.0 °C, 2017
Max 10m Temp Rise 1.0 °C 13:22 0.8 °C 1.0 °C, 2009 0.5 °C, 2014
Max 1hr Temp Rise 3.5 °C 13:21 2.5 °C 3.5 °C, 2009 1.7 °C, 2016
Max 1hr Hum Rise 33% 18:03 9% 33%, 2009 5%, 2012
Max 10m Temp Fall 2.0 °C 17:45 0.6 °C 2.0 °C, 2009 0.4 °C, 2012
Max 1hr Temp Fall 6.5 °C 18:35 1.9 °C 6.5 °C, 2009 1.5 °C, 2016
Max 1hr Hum Fall 13% 13:33 12% 19%, 2020 7%, 2012
Max 10m Wind Speed n/a 0.0 mph 16.1, 2020 6.1, 2017
Minimum Feels-like n/a 0.0 °C 22.5, 2011 10, 2013
Maximum Feels-like n/a 0.0 °C 36.1, 2011 20.6, 2013
Mean Feels-like n/a 0.0 °C 29.7, 2011 15.6, 2013
Air-frost Hrs 0 hrs 0 hrs 0 hrs, 2009 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 11.0 °C (+1.5) 9.7 °C (+0.6) 17.9 °C (+8.4), 2010 5.0 °C (-4.5), 2017
Humidity Range 50% 38% 57%, 2010 24%, 2012
Pressure Range 2 hPa 5 hPa 9 hPa, 2012 2 hPa, 2009
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 6 [40%]159 hrs (93%) [39%] 14.5 [96%], 2010 0 [0%], 2017
Wet Hours 3
[Mean rain rate: 12 mm/h]
36 hrs (109%) [5.6%] 10, 2017 0, 2010
Cloud Cover not available
Events Hail: medium-size stones
Severe Thunderstorm
Comments eve Thunderstormtorms , Hail , Torrential Rain;
Extra Comments Details: 1730-1930 Intense MCSlight Thunderstorms - 100+ Lightning (mostly IC), near-constant Thunder, Very Torrential/Tropical Rain, occasionalasional Small (pea) Hail. 1930-22 distant Thunder continued.
Issues Tmax corrected as unreliable
Observer Absent? No
Pond Temperature (Heath) 0.0 °C
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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