Daily Report for 21st May 2009

<<Previous Day
Reset
Next Day>>
Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 8.8 °C (+0.0) 06:06 8.3 °C (+0.7) 13.5 °C (+4.7), 2016 5.5 °C (-3.3), 2015
Maximum Temperature 19.8 °C (+2.6) 14:56 17.2 °C (+1.2) 27.4 °C (+10.2), 2020 15.9 °C (-1.3), 2013
Mean Temperature 13.9 °C (+1.3) 12.5 °C (+1.0) 21.4 °C, 2020 12.1 °C, 2012
Minimum Humidity 35% 14:57 47% 71%, 2012 28%, 2020
Maximum Humidity 88% 07:24 86% 93%, 2012 81%, 2015
Mean Humidity 63% 69% 83%, 2012 55%, 2011
Minimum Pressure 1012 hPa 17:13 1014 hPa 1029 hPa, 2010 1001 hPa, 2014
Maximum Pressure 1017 hPa 00:18 1019 hPa 1032 hPa, 2010 1010 hPa, 2012
Mean Pressure 1014 hPa 1016 hPa 1030 hPa, 2010 1008 hPa, 2014
Mean Wind Speed n/a (-4.7) 0.0 mph (-4.7) 5.4, 2011 2.2, 2018
Maximum Wind Speed n/a 0.0 mph 14.5, 2011 8.4, 2010
Maximum Gust n/a 0.0 mph 25.8, 2016 12, 2010
Mean Wind Direction n/a
Rainfall 0.0 mm 12.4 mm (36%) 0.4 mm, 2014
Maximum Hourly Rain n/a 0.4, 2014
Maximum 10-min Rain n/a 0.4, 2014
Maximum Rain Rate n/a 1.5, 2014
Minimum Dew Point 3.8 °C 18:27 3.6 °C 9.5 °C, 2010 1.2 °C, 2015
Maximum Dew Point 9.5 °C 10:47 9.2 °C 15.5 °C, 2020 7.6 °C, 2015
Mean Dew Point 6.3 °C 6.5 °C 12.2 °C, 2010 3.8 °C, 2015
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 8.8 °C 8.6 °C 13.5 °C, 2016 5.5 °C, 2015
Day Maximum (09-21) 19.8 °C 17.2 °C 27.4 °C, 2020 14.1 °C, 2013
Max 10m Temp Rise n/a 12:38 0.7 °C 1.7, 2010 0.4, 2012
Max 1hr Temp Rise n/a 13:28 2.1 °C 5.7, 2011 1, 2016
Max 1hr Hum Rise n/a 12:28 8% 14, 2018 4, 2012
Max 10m Temp Fall n/a 12:28 0.5 °C 1, 2010 0.2, 2012
Max 1hr Temp Fall n/a 12:28 1.4 °C 2.4, 2020 0.7, 2012
Max 1hr Hum Fall n/a 13:28 13% 25, 2010 5, 2012
Max 10m Wind Speed n/a 0.0 mph 9.4, 2011 6.6, 2018
Minimum Feels-like n/a 0.0 °C 15.1, 2020 3, 2015
Maximum Feels-like n/a 0.0 °C 29.8, 2020 17.9, 2012
Mean Feels-like n/a 0.0 °C 23.3, 2020 12.5, 2012
Air-frost Hrs 0 hrs 0 hrs 0 hrs, 2009 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 11.0 °C (+2.6) 8.9 °C (+0.4) 14.6 °C (+6.2), 2015 4.2 °C (-4.2), 2016
Humidity Range 53% 39% 58%, 2020 17%, 2013
Pressure Range 5 hPa 5 hPa 10 hPa, 2014 2 hPa, 2012
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 7.3 [51%]113 hrs (89%) [39%] 13.5 [94%], 2011 0.4 [3%], 2016
Wet Hours 013 hrs (49%) [2.6%] 0.5, 2014 0, 2009
Cloud Cover not available
Events None
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.
View monthly summary

Daily Graph of Conditions

daygraph daygraph 2 daygraph-wdir

Webcam Summary of Cloud Conditions


Webcam summary not available for this day

Wind rose