Daily Report for 22nd February 2016

<<Previous Day
Reset
Next Day>>
Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 5.2 °C (+2.9) 23:58 4.0 °C (+1.9) 10.9 °C (+8.6), 2017 -0.8 °C (-3.1), 2015
Maximum Temperature 11.9 °C (+4.0) 00:07 9.1 °C (+1.7) 14.8 °C (+6.9), 2019 1.4 °C (-6.5), 2013
Mean Temperature 8.5 °C (+3.5) 6.8 °C (+1.8) 12.2 °C, 2017 0.6 °C, 2013
Minimum Humidity 49% 16:33 60% 94%, 2010 49%, 2014
Maximum Humidity 91% 06:47 88% 98%, 2010 66%, 2013
Mean Humidity 74% 77% 97%, 2010 57%, 2013
Minimum Pressure 1007 hPa 03:02 1002 hPa 1032 hPa, 2019 983 hPa, 2010
Maximum Pressure 1011 hPa 22:17 1013 hPa 1036 hPa, 2019 991 hPa, 2010
Mean Pressure 1009 hPa 1007 hPa 1035 hPa, 2019 987 hPa, 2010
Mean Wind Speed 4.3 mph (-0.8) 7.0 mph (+1.9) 9.5 mph, 2017 2.4 mph, 2019
Maximum Wind Speed 14.2 mph 00:15 16.7 mph 21.5 mph, 2015 8.7 mph, 2011
Maximum Gust 25.2 mph 00:05 24.9 mph 33.7 mph, 2015 10.5 mph, 2011
Mean Wind Direction NW
Rainfall 3.7 mm 38.5 mm (127%) 13.0 mm, 2010
Maximum Hourly Rain 1.9 mm 06:00 3.0 mm, 2010
Maximum 10-min Rain 0.7 mm 05:19 0.8 mm, 2010
Maximum Rain Rate 11 mm/h 05:14 18 mm/h, 2015
Minimum Dew Point -2.4 °C 17:37 -0.3 °C 7.7 °C, 2017 -8.2 °C, 2013
Maximum Dew Point 9.7 °C 03:48 5.6 °C 10.0 °C, 2012 -5.0 °C, 2013
Mean Dew Point 3.8 °C 2.8 °C 8.6 °C, 2017 -6.9 °C, 2013
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) * 8.4 °C * 07:54 4.9 °C 11.2 °C, 2017 -0.8 °C, 2015
Day Maximum (09-21) * 8.8 °C * 09:29 9.0 °C 14.8 °C, 2019 1.4 °C, 2013
Max 10m Temp Rise 0.2 °C 12:33 0.3 °C 1.3 °C, 2009 0.1 °C, 2010
Max 1hr Temp Rise 0.6 °C 12:51 1.2 °C 2.5 °C, 2019 0.4 °C, 2010
Max 1hr Hum Rise 3% 01:57 7% 14%, 2015 1%, 2010
Max 10m Temp Fall 0.5 °C 06:12 0.4 °C 1.3 °C, 2009 0.1 °C, 2011
Max 1hr Temp Fall 1.7 °C 06:21 1.2 °C 2.0 °C, 2019 0.3 °C, 2011
Max 1hr Hum Fall 20% 14:37 10% 20%, 2016 1%, 2010
Max 10m Wind Speed 11.9 mph 00:17 13.0 mph 16.4 mph, 2015 5.5 mph, 2011
Minimum Feels-like 2.1 °C 23:26 0.3 °C 11.6 °C, 2017 -6.3 °C, 2013
Maximum Feels-like 13.0 °C 00:00 8.0 °C 15.9 °C, 2019 -1.1 °C, 2013
Mean Feels-like 7.8 °C 4.6 °C 12.9 °C, 2017 -4.0 °C, 2013
Air-frost Hrs 0 hrs 0.2 hrs 3 hrs, 2015 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 6.7 °C (+1.1) 5.1 °C (-0.2) 10.0 °C (+4.4), 2015 1.5 °C (-4.1), 2013
Humidity Range 42% 28% 42%, 2016 4%, 2010
Pressure Range 4 hPa 11 hPa 20 hPa, 2015 2 hPa, 2018
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 1 [11%]55 hrs (94%) [28%] 7.4 [79%], 2019 0 [0%], 2010
Wet Hours 3
[Mean rain rate: 1.2 mm/h]
51 hrs (130%) [9.7%] 10, 2010 , 2009
Cloud Cover am: Overcast
pm: Overcast transitioned to Partly Cloudy
Events None
Comments am Rain spells
Extra Comments
Issues Wind data from 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.
View monthly summary

Daily Graph of Conditions

day graph

Webcam Summary of Cloud Conditions

daycamsumLarge resolution version