Daily Report for 27th February 2016

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 2.4 °C (-0.2) 06:17 3.2 °C (+1.0) 6.5 °C (+3.9), 2009 -4.3 °C (-6.9), 2018
Maximum Temperature 5.6 °C (-3.1) 13:12 8.6 °C (+1.1) 14.0 °C (+5.3), 2009 -0.1 °C (-8.8), 2018
Mean Temperature 3.9 °C (-1.6) 6.1 °C (+1.0) 10.2 °C, 2009 -2.4 °C, 2018
Minimum Humidity 47% 13:51 58% 76%, 2010 47%, 2016
Maximum Humidity 74% 07:06 86% 98%, 2013 74%, 2016
Mean Humidity 61% 75% 89%, 2010 61%, 2016
Minimum Pressure 1007 hPa 02:56 1004 hPa 1032 hPa, 2013 982 hPa, 2017
Maximum Pressure 1015 hPa 23:10 1014 hPa 1035 hPa, 2013 999 hPa, 2017
Mean Pressure 1010 hPa 1008 hPa 1034 hPa, 2013 989 hPa, 2017
Mean Wind Speed 5.1 mph (+0.0) 6.2 mph (+1.1) 7.6 mph, 2017 4.0 mph, 2010
Maximum Wind Speed 13.7 mph 14:14 15.4 mph 18.9 mph, 2017 10.7 mph, 2012
Maximum Gust 22.0 mph 14:14 23.0 mph 27.3 mph, 2017 15.4 mph, 2012
Mean Wind Direction ENE
Rainfall 0.0 mm 38.5 mm (103%) 9.1 mm, 2017
Maximum Hourly Rain n/a 5.6, 2017
Maximum 10-min Rain n/a 2, 2017
Maximum Rain Rate n/a 30, 2010
Minimum Dew Point -5.1 °C 15:24 -1.3 °C 3.7 °C, 2009 -8.3 °C, 2018
Maximum Dew Point -1.0 °C 00:00 4.7 °C 7.9 °C, 2010 -3.7 °C, 2018
Mean Dew Point -3.1 °C 1.8 °C 5.9 °C, 2012 -5.9 °C, 2018
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 2.4 °C 06:17 4.0 °C 8.2 °C, 2017 -4.1 °C, 2018
Day Maximum (09-21) 5.6 °C 13:12 8.5 °C 14.0 °C, 2009 -0.1 °C, 2018
Max 10m Temp Rise 0.4 °C 09:44 0.4 °C 0.9 °C, 2010 0.3 °C, 2012
Max 1hr Temp Rise 1.0 °C 07:19 1.3 °C 1.9 °C, 2015 0.8 °C, 2017
Max 1hr Hum Rise 4% 21:03 7% 19%, 2018 4%, 2016
Max 10m Temp Fall 0.2 °C 03:34 0.4 °C 1.1 °C, 2018 0.2 °C, 2012
Max 1hr Temp Fall 0.8 °C 19:36 1.3 °C 1.8 °C, 2018 0.5 °C, 2012
Max 1hr Hum Fall 8% 08:22 10% 15%, 2014 4%, 2012
Max 10m Wind Speed 10.9 mph 15:26 11.9 mph 14.4 mph, 2017 7.6 mph, 2012
Minimum Feels-like -1.4 °C 23:30 -0.1 °C 3.2 °C, 2012 -10.3 °C, 2018
Maximum Feels-like 4.1 °C 16:46 7.7 °C 11.2 °C, 2012 -1.1 °C, 2018
Mean Feels-like 0.9 °C 4.1 °C 8.2 °C, 2012 -6.4 °C, 2018
Air-frost Hrs 0 hrs 0.9 hrs 24 hrs, 2018 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 3.2 °C (-2.9) 5.4 °C (+0.1) 7.5 °C (+1.4), 2009 3.2 °C (-2.9), 2016
Humidity Range 27% 28% 48%, 2014 11%, 2017
Pressure Range 8 hPa 10 hPa 17 hPa, 2017 3 hPa, 2009
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 0.3 [3%]74 hrs (101%) [31%] 8 [83%], 2015 0 [0%], 2012
Wet Hours 051 hrs (106%) [7.9%] 5, 2017 , 2009
Cloud Cover Overcast with periods of Mostly Cloudy
Events None
Comments -
Extra Comments
Issues Wind data from Harpenden
Observer Absent? Yes - observations may be unreliable
Notes
Times of extremes are computed using the midpoint time of the extremum (if the value persisted for >1 minute).
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; their reliablity is questionable and they are provided for interest only.
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