Daily Report for 16th May 2009

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 7.3 °C (-0.8) 02:08 8.2 °C (+0.9) 15.7 °C (+7.6), 2017 2.9 °C (-5.2), 2013
Maximum Temperature 15.9 °C (-0.7) 13:01 17.2 °C (+1.4) 24.4 °C (+7.8), 2017 14.3 °C (-2.2), 2012
Mean Temperature 11.7 °C (-0.7) 12.4 °C (+1.2) 19.2 °C, 2017 9.9 °C, 2012
Minimum Humidity 50% 14:45 47% 60%, 2010 35%, 2019
Maximum Humidity 94% 07:57 85% 94%, 2009 79%, 2020
Mean Humidity 72% 68% 74%, 2010 60%, 2012
Minimum Pressure 1003 hPa 06:14 1015 hPa 1028 hPa, 2014 998 hPa, 2013
Maximum Pressure 1010 hPa 22:13 1020 hPa 1036 hPa, 2014 1001 hPa, 2013
Mean Pressure 1006 hPa 1017 hPa 1032 hPa, 2014 1000 hPa, 2013
Mean Wind Speed n/a (-4.7) 0.0 mph (-4.7) 7.2, 2017 0.8, 2014
Maximum Wind Speed n/a 0.0 mph 17.2, 2019 7.6, 2014
Maximum Gust n/a 0.0 mph 24.2, 2018 8.5, 2014
Mean Wind Direction n/a
Rainfall 0.5 mm 8.2 mm (31%) 8.8 mm, 2010
Maximum Hourly Rain 0.3 mm 07:48 6.3 mm, 2010
Maximum 10-min Rain 0.3 mm 07:48 2.7 mm, 2010
Maximum Rain Rate n/a 60, 2010
Minimum Dew Point 3.4 °C 21:00 3.3 °C 11.9 °C, 2017 -0.6 °C, 2012
Maximum Dew Point 10.8 °C 14:39 9.1 °C 15.9 °C, 2017 4.1 °C, 2012
Mean Dew Point 6.5 °C 6.3 °C 13.5 °C, 2017 1.9 °C, 2012
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 7.3 °C 8.5 °C 15.7 °C, 2017 2.9 °C, 2013
Day Maximum (09-21) 15.9 °C 17.2 °C 24.4 °C, 2017 14.3 °C, 2012
Max 10m Temp Rise 0.9 °C 15:47 0.7 °C 1.1 °C, 2013 0.4 °C, 2011
Max 1hr Temp Rise 1.8 °C 10:10 2.2 °C 5.2 °C, 2013 1.5 °C, 2016
Max 1hr Hum Rise 28% 14:39 9% 28%, 2009 6%, 2011
Max 10m Temp Fall 0.6 °C 14:25 0.5 °C 0.8 °C, 2020 0.4 °C, 2017
Max 1hr Temp Fall 1.8 °C 14:25 1.6 °C 3.2 °C, 2020 1.2 °C, 2017
Max 1hr Hum Fall 23% 15:39 13% 23%, 2009 4%, 2010
Max 10m Wind Speed n/a 0.0 mph 12.3, 2017 4.1, 2014
Minimum Feels-like n/a 0.0 °C 18.4, 2017 0.8, 2012
Maximum Feels-like n/a 0.0 °C 27.5, 2017 14.3, 2012
Mean Feels-like n/a 0.0 °C 22.3, 2017 9.2, 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 8.6 °C (+0.2) 9.0 °C (+0.5) 13.9 °C (+5.5), 2014 6.5 °C (-1.9), 2018
Humidity Range 44% 38% 56%, 2013 24%, 2018
Pressure Range 7 hPa 5 hPa 10 hPa, 2019 3 hPa, 2020
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 4.4 [31%]85 hrs (89%) [39%] 12 [85%], 2019 0.4 [3%], 2018
Wet Hours 1
[Mean rain rate: 0.5 mm/h]
10 hrs (48%) [2.6%] 3.5, 2010 0, 2011
Cloud Cover not available
Events None
Comments 0730,14 Heavy Showers, occasional. pm Light Showers
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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Daily Graph of Conditions

daygraph daygraph 2 daygraph-wdir

Webcam Summary of Cloud Conditions


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Wind rose