Daily Report for 18th March 2009

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 2.7 °C (-1.1) 06:26 3.6 °C (+0.4) 10.4 °C (+6.6), 2017 -1.7 °C (-5.5), 2018
Maximum Temperature 15.3 °C (+4.8) 15:22 12.3 °C (+2.6) 17.4 °C (+6.9), 2010 0.3 °C (-10.2), 2018
Mean Temperature 9.0 °C (+1.8) 8.0 °C (+1.5) 12.6 °C, 2017 -0.6 °C, 2018
Minimum Humidity 42% 14:55 53% 81%, 2013 39%, 2010
Maximum Humidity 95% 08:00 93% 98%, 2013 81%, 2014
Mean Humidity 68% 73% 93%, 2013 67%, 2014
Minimum Pressure 1028 hPa 15:18 1009 hPa 1028 hPa, 2009 989 hPa, 2013
Maximum Pressure 1036 hPa 00:59 1018 hPa 1036 hPa, 2009 994 hPa, 2013
Mean Pressure 1032 hPa 1013 hPa 1032 hPa, 2009 991 hPa, 2013
Mean Wind Speed n/a (-5.2) 0.0 mph (-5.2) 9.8, 2018 1.24, 2013
Maximum Wind Speed n/a 0.0 mph 18.8, 2018 6.7, 2013
Maximum Gust n/a 0.0 mph 31.1, 2018 8.7, 2013
Mean Wind Direction n/a
Rainfall 0.0 mm 24.2 mm (95%) 11.5 mm, 2013
Maximum Hourly Rain n/a 3.4, 2013
Maximum 10-min Rain n/a 1.2, 2013
Maximum Rain Rate n/a 17, 2013
Minimum Dew Point 1.8 °C 23:00 0.6 °C 6.5 °C, 2017 -4.7 °C, 2018
Maximum Dew Point 6.4 °C 12:11 6.0 °C 10.8 °C, 2017 -2.4 °C, 2018
Mean Dew Point 3.1 °C 3.0 °C 9.1 °C, 2017 -3.4 °C, 2018
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 2.7 °C 3.9 °C 9.9 °C, 2017 -1.7 °C, 2018
Day Maximum (09-21) 15.3 °C 12.3 °C 17.4 °C, 2010 -0.1 °C, 2018
Max 10m Temp Rise n/a 08:22 0.2 °C 0.8, 2010 0.2, 2011
Max 1hr Temp Rise n/a 09:12 0.5 °C 3.3, 2010 0.5, 2011
Max 1hr Hum Rise n/a 20:26 2% 16, 2010 3, 2017
Max 10m Temp Fall n/a 08:08 0.2 °C 0.7, 2020 0.2, 2017
Max 1hr Temp Fall n/a 16:26 0.4 °C 2.4, 2020 0.7, 2017
Max 1hr Hum Fall n/a 13:07 2% 23, 2010 4, 2016
Max 10m Wind Speed n/a 0.0 mph 14.3, 2018 5.6, 2013
Minimum Feels-like n/a 0.0 °C 10.4, 2017 -8.7, 2018
Maximum Feels-like n/a 0.0 °C 17.4, 2010 -2.4, 2018
Mean Feels-like n/a 0.0 °C 13.5, 2017 -6.5, 2018
Air-frost Hrs 0 hrs 0.1 hrs 19 hrs, 2018 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 12.6 °C (+5.9) 8.7 °C (+2.1) 12.6 °C (+5.9), 2009 2.0 °C (-4.7), 2018
Humidity Range 53% 40% 53%, 2009 14%, 2017
Pressure Range 8 hPa 9 hPa 17 hPa, 2012 3 hPa, 2020
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 11.5 [107%]95 hrs (160%) [51%] 11.5 [107%], 2009 0 [0%], 2016
Wet Hours 0 hrs (0%) [0%] 6, 2013 , 2009
Cloud Cover not available
Events Maximum possible sunshine
Comments -
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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