Daily Report for 11th April 2009

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 8.9 °C (+4.2) 06:34 7.0 °C (+2.4) 9.2 °C (+4.4), 2016 1.2 °C (-3.5), 2019
Maximum Temperature 10.6 °C (-1.6) 18:14 15.2 °C (+3.4) 24.8 °C (+12.6), 2020 10.5 °C (-1.7), 2013
Mean Temperature 9.7 °C (+1.3) 10.5 °C (+2.9) 16.4 °C, 2020 6.1 °C, 2019
Minimum Humidity 93% 19:33 56% 93%, 2009 31%, 2020
Maximum Humidity 97% 09:10 91% 98%, 2013 69%, 2017
Mean Humidity 96% 75% 96%, 2009 55%, 2014
Minimum Pressure 1005 hPa 01:36 1009 hPa 1027 hPa, 2010 994 hPa, 2012
Maximum Pressure 1012 hPa 21:50 1017 hPa 1031 hPa, 2010 999 hPa, 2013
Mean Pressure 1008 hPa 1013 hPa 1029 hPa, 2010 997 hPa, 2013
Mean Wind Speed n/a (-4.9) 0.0 mph (-4.9) 7.7, 2015 2, 2014
Maximum Wind Speed n/a 0.0 mph 15.4, 2015 7.8, 2014
Maximum Gust n/a 0.0 mph 24.2, 2015 13.2, 2014
Mean Wind Direction n/a
Rainfall 2.5 mm 8.2 mm (46%) 4.1 mm, 2013
Maximum Hourly Rain 0.5 mm 01:39 2.0 mm, 2016
Maximum 10-min Rain 0.4 mm 01:14 0.5 mm, 2015
Maximum Rain Rate 0.5 mm/h 01:39 18 mm/h, 2015
Minimum Dew Point 8.3 °C 05:12 3.0 °C 8.3 °C, 2009 -4.4 °C, 2015
Maximum Dew Point 9.7 °C 17:55 8.4 °C 10.5 °C, 2020 2.4 °C, 2019
Mean Dew Point 9.0 °C 5.8 °C 9.0 °C, 2009 0.3 °C, 2019
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 8.9 °C 7.1 °C 10.5 °C, 2015 1.2 °C, 2019
Day Maximum (09-21) 10.6 °C 15.2 °C 24.8 °C, 2020 9.3 °C, 2018
Max 10m Temp Rise 0.3 °C 14:40 0.2 °C 0.9 °C, 2011 0.3 °C, 2009
Max 1hr Temp Rise 0.4 °C 12:46 0.6 °C 3.9 °C, 2011 0.4 °C, 2009
Max 1hr Hum Rise 2% 21:53 1% 14%, 2011 2%, 2009
Max 10m Temp Fall 0.3 °C 14:30 0.1 °C 0.9 °C, 2012 0.3 °C, 2009
Max 1hr Temp Fall 0.6 °C 03:53 0.3 °C 3.5 °C, 2020 0.6 °C, 2009
Max 1hr Hum Fall 1% 08:22 2% 27%, 2015 1%, 2009
Max 10m Wind Speed n/a 0.0 mph 12.4, 2015 6.3, 2014
Minimum Feels-like n/a 0.0 °C 8, 2020 -3.5, 2019
Maximum Feels-like n/a 0.0 °C 25.7, 2020 10.9, 2013
Mean Feels-like n/a 0.0 °C 17, 2020 4, 2019
Air-frost Hrs 0 hrs 0 hrs 0 hrs, 2009 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 1.7 °C (-5.7) 8.2 °C (+1.0) 16.6 °C (+9.2), 2020 1.7 °C (-5.7), 2009
Humidity Range 4% 35% 57%, 2020 4%, 2009
Pressure Range 7 hPa 7 hPa 16 hPa, 2015 3 hPa, 2014
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 0 [0%]58 hrs (120%) [44%] 11 [90%], 2017 0 [0%], 2009
Wet Hours 4
[Mean rain rate: 0.6 mm/h]
15 hrs (91%) [5.8%] 8, 2013 0, 2010
Cloud Cover not available
Events None
Comments 00-01 L. Rain, am SL. Rain/Drizzle Showers
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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Daily Graph of Conditions

daygraph daygraph 2 daygraph-wdir

Webcam Summary of Cloud Conditions


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Wind rose