Daily Report for 13th February 2016

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 1.4 °C (-0.5) 03:24 4.5 °C (+2.3) 5.6 °C (+3.7), 2011 0.4 °C (-1.5), 2009
Maximum Temperature 4.7 °C (-2.5) 14:46 9.2 °C (+2.0) 11.3 °C (+4.1), 2019 3.2 °C (-4.0), 2010
Mean Temperature 3.5 °C (-1.5) 7.2 °C (+2.2) 8.2 °C, 2019 1.7 °C, 2010
Minimum Humidity 83% 10:53 62% 83%, 2016 51%, 2014
Maximum Humidity 92% 22:35 86% 98%, 2009 76%, 2014
Mean Humidity 88% 76% 92%, 2012 65%, 2014
Minimum Pressure 983 hPa 14:06 998 hPa 1032 hPa, 2019 983 hPa, 2016
Maximum Pressure 993 hPa 00:15 1008 hPa 1034 hPa, 2019 993 hPa, 2016
Mean Pressure 986 hPa 1002 hPa 1033 hPa, 2019 986 hPa, 2016
Mean Wind Speed 4.1 mph (-1.0) 7.6 mph (+2.5) 7.7 mph, 2014 4.1 mph, 2012
Maximum Wind Speed 12.0 mph 00:00 18.1 mph 19.2 mph, 2015 12.0 mph, 2016
Maximum Gust 17.0 mph 00:00 26.0 mph 33.4 mph, 2018 17.0 mph, 2016
Mean Wind Direction ENE
Rainfall 2.1 mm 22.3 mm (124%) 4.1 mm, 2015
Maximum Hourly Rain 0.6 mm 13:17 2.0 mm, 2009
Maximum 10-min Rain 0.3 mm 21:31 0.5 mm, 2012
Maximum Rain Rate 0.7 mm/h 19:49 2.2 mm/h, 2015
Minimum Dew Point -0.4 °C 03:24 0.2 °C 3.4 °C, 2019 -6.2 °C, 2013
Maximum Dew Point 2.6 °C 17:51 5.6 °C 7.1 °C, 2011 0.7 °C, 2010
Mean Dew Point 1.6 °C 3.1 °C 5.5 °C, 2019 -3.0 °C, 2013
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 1.4 °C 03:24 5.5 °C 6.8 °C, 2019 0.4 °C, 2009
Day Maximum (09-21) 4.7 °C 14:46 9.2 °C 11.3 °C, 2019 2.5 °C, 2013
Max 10m Temp Rise 0.2 °C 08:47 0.3 °C 0.5 °C, 2012 0.1 °C, 2011
Max 1hr Temp Rise 0.6 °C 06:34 1.1 °C 1.6 °C, 2017 0.5 °C, 2011
Max 1hr Hum Rise 3% 11:44 7% 9%, 2012 3%, 2011
Max 10m Temp Fall 0.3 °C 00:24 0.4 °C 0.5 °C, 2018 0.1 °C, 2013
Max 1hr Temp Fall 0.9 °C 01:01 1.2 °C 1.4 °C, 2017 0.3 °C, 2013
Max 1hr Hum Fall 4% 10:01 8% 15%, 2012 3%, 2011
Max 10m Wind Speed 10.5 mph 00:10 13.8 mph 14.6 mph, 2018 7.8 mph, 2010
Minimum Feels-like -3.1 °C 03:22 0.2 °C 2.6 °C, 2019 -4.8 °C, 2010
Maximum Feels-like 1.1 °C 14:37 8.0 °C 11.3 °C, 2019 1.1 °C, 2016
Mean Feels-like -0.5 °C 4.8 °C 6.5 °C, 2019 -1.5 °C, 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 3.3 °C (-2.0) 4.7 °C (-0.3) 6.6 °C (+1.3), 2015 2.8 °C (-2.5), 2018
Humidity Range 9% 24% 35%, 2009 9%, 2016
Pressure Range 10 hPa 10 hPa 17 hPa, 2015 2 hPa, 2019
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 0 [0%]24 hrs (71%) [21%] 7 [80%], 2017 0 [0%], 2011
Wet Hours 12
[Mean rain rate: 0.2 mm/h]
28 hrs (121%) [9%] 12, 2016 , 2009
Cloud Cover Overcast
Events None
Comments Rain/Drizzle spells throughout
Extra Comments
Issues No wind data all day; corrected using Harpenden
Observer Absent? Yes - observations may be unreliable
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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