Daily Report for 1st March 2016

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 4.5 °C (+1.9) 02:55 4.5 °C (+1.9) 8.0 °C (+5.4), 2019 -4.8 °C (-7.4), 2018
Maximum Temperature 12.7 °C (+3.8) 15:44 12.7 °C (+3.7) 14.4 °C (+5.5), 2012 0.0 °C (-8.9), 2018
Mean Temperature 8.7 °C (+2.8) 8.7 °C (+2.8) 9.9 °C, 2012 -2.8 °C, 2018
Minimum Humidity 64% 00:06 64% 75%, 2011 47%, 2015
Maximum Humidity 92% 10:47 92% 98%, 2014 84%, 2017
Mean Humidity 82% 82% 84%, 2014 68%, 2015
Minimum Pressure 1003 hPa 23:37 1003 hPa 1035 hPa, 2011 988 hPa, 2020
Maximum Pressure 1024 hPa 00:15 1024 hPa 1039 hPa, 2011 991 hPa, 2020
Mean Pressure 1010 hPa 1010 hPa 1037 hPa, 2011 990 hPa, 2020
Mean Wind Speed 8.9 mph (+3.7) 8.9 mph (+3.7) 12.5 mph, 2018 1.9 mph, 2014
Maximum Wind Speed 15.0 mph 10:44 15.0 mph 22.0 mph, 2018 7.1 mph, 2012
Maximum Gust 22.0 mph 10:39 22.0 mph 33.4 mph, 2018 8.7 mph, 2012
Mean Wind Direction WSW
Rainfall 5.7 mm 5.7 mm (402%) 5.7 mm, 2016
Maximum Hourly Rain 3.0 mm 11:20 3.2 mm, 2015
Maximum 10-min Rain 0.8 mm 10:46 2.6 mm, 2015
Maximum Rain Rate 9 mm/h 10:23 30 mm/h, 2015
Minimum Dew Point -1.1 °C 00:06 -1.1 °C 5.4 °C, 2019 -8.4 °C, 2018
Maximum Dew Point 10.7 °C 15:16 10.7 °C 10.7 °C, 2016 -3.6 °C, 2018
Mean Dew Point 5.8 °C 5.8 °C 6.7 °C, 2019 -5.8 °C, 2018
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 4.5 °C 02:55 4.5 °C 8.1 °C, 2019 -5.1 °C, 2018
Day Maximum (09-21) 12.7 °C 15:44 12.7 °C 14.4 °C, 2012 0.0 °C, 2018
Max 10m Temp Rise 0.4 °C 13:50 0.4 °C 0.6 °C, 2011 0.3 °C, 2013
Max 1hr Temp Rise 1.3 °C 14:01 1.3 °C 2.1 °C, 2010 0.4 °C, 2011
Max 1hr Hum Rise 7% 01:10 7% 21%, 2015 3%, 2019
Max 10m Temp Fall 0.3 °C 18:07 0.3 °C 0.8 °C, 2015 0.2 °C, 2013
Max 1hr Temp Fall 1.1 °C 18:44 1.1 °C 2.4 °C, 2015 0.7 °C, 2013
Max 1hr Hum Fall 5% 16:02 5% 24%, 2015 5%, 2016
Max 10m Wind Speed 11.3 mph 10:32 11.3 mph 18.1 mph, 2015 5.7 mph, 2014
Minimum Feels-like -0.2 °C 03:40 -0.2 °C 5.0 °C, 2012 -14.2 °C, 2018
Maximum Feels-like 14.3 °C 15:28 14.3 °C 14.6 °C, 2012 -5.7 °C, 2018
Mean Feels-like 6.8 °C 6.8 °C 9.8 °C, 2012 -10.1 °C, 2018
Air-frost Hrs 0 hrs 0 hrs 24 hrs, 2018 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 8.2 °C (+1.9) 8.2 °C (+1.9) 9.5 °C (+3.2), 2010 1.9 °C (-4.4), 2011
Humidity Range 28% 28% 49%, 2015 13%, 2011
Pressure Range 21 hPa 21 hPa 21 hPa, 2016 3 hPa, 2020
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 0.2 [2%]0.2 hrs (6%) [2%] 9 [92%], 2012 0 [0%], 2011
Wet Hours 4
[Mean rain rate: 1.4 mm/h]
4 hrs (234%) [17%] 5, 2018 , 2009
Cloud Cover am: Overcast
pm: Mostly Cloudy
Events None
Comments am Rain
Extra Comments
Issues Wind data from Harpenden
Observer Absent? Yes - observations may be unreliable
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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