Daily Report for 31st March 2009

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 8.3 °C (+3.9) 23:58 3.7 °C (+0.1) 11.2 °C (+6.7), 2017 -2.6 °C (-7.1), 2013
Maximum Temperature 13.4 °C (+1.8) 14:29 12.3 °C (+2.0) 17.7 °C (+6.1), 2011 5.6 °C (-6.0), 2013
Mean Temperature 10.8 °C (+2.8) 8.0 °C (+1.0) 14.3 °C, 2017 1.8 °C, 2013
Minimum Humidity 53% 16:39 52% 75%, 2018 37%, 2015
Maximum Humidity 73% 23:48 90% 97%, 2011 73%, 2009
Mean Humidity 63% 71% 87%, 2018 56%, 2015
Minimum Pressure 1022 hPa 18:03 1011 hPa 1030 hPa, 2020 981 hPa, 2010
Maximum Pressure 1025 hPa 06:54 1019 hPa 1034 hPa, 2020 1001 hPa, 2010
Mean Pressure 1024 hPa 1015 hPa 1032 hPa, 2020 991 hPa, 2010
Mean Wind Speed n/a (-5.2) 0.0 mph (-5.2) 12.7, 2015 1.5, 2014
Maximum Wind Speed n/a 0.0 mph 30.1, 2015 9.4, 2014
Maximum Gust n/a 0.0 mph 39.8, 2015 13.7, 2014
Mean Wind Direction n/a
Rainfall 0.0 mm 32.4 mm (74%) 3.0 mm, 2011
Maximum Hourly Rain n/a 2, 2018
Maximum 10-min Rain n/a 0.7, 2018
Maximum Rain Rate n/a 3.3, 2018
Minimum Dew Point 2.4 °C 23:58 0.3 °C 8.0 °C, 2011 -7.5 °C, 2013
Maximum Dew Point 7.2 °C 12:46 5.5 °C 12.6 °C, 2011 -1.6 °C, 2013
Mean Dew Point 3.9 °C 2.7 °C 9.6 °C, 2011 -5.2 °C, 2013
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 8.3 °C 3.9 °C 13.0 °C, 2017 -2.6 °C, 2013
Day Maximum (09-21) 13.4 °C 12.3 °C 17.7 °C, 2011 5.6 °C, 2013
Max 10m Temp Rise n/a 12:26 0.4 °C 0.9, 2013 0.3, 2012
Max 1hr Temp Rise n/a 12:53 1.0 °C 3.6, 2013 0.8, 2012
Max 1hr Hum Rise n/a 22:16 4% 17, 2015 5, 2017
Max 10m Temp Fall n/a 12:06 0.4 °C 1, 2015 0.2, 2017
Max 1hr Temp Fall n/a 21:56 0.9 °C 2.2, 2015 1, 2013
Max 1hr Hum Fall n/a 13:13 5% 25, 2015 9, 2014
Max 10m Wind Speed n/a 0.0 mph 21.3, 2015 6.2, 2014
Minimum Feels-like n/a 0.0 °C 11.2, 2017 -6.1, 2013
Maximum Feels-like n/a 0.0 °C 18.8, 2011 4, 2013
Mean Feels-like n/a 0.0 °C 14.4, 2017 -0.8, 2013
Air-frost Hrs 0 hrs 0.0 hrs 7 hrs, 2013 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 5.1 °C (-2.0) 8.7 °C (+1.9) 8.3 °C (+1.2), 2011 3.4 °C (-3.7), 2010
Humidity Range 20% 38% 53%, 2015 18%, 2018
Pressure Range 3 hPa 9 hPa 22 hPa, 2015 2 hPa, 2013
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 0.6 [5%]165 hrs (157%) [50%] 8 [69%], 2016 0.1 [1%], 2012
Wet Hours 0 hrs (0%) [0%] 4, 2011 , 2009
Cloud Cover not available
Events None
Comments -
Extra Comments
Issues None known
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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