Daily Report for 21st May 2012

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 9.0 °C (+0.1) 05:36 7.6 °C (-0.2) 13.5 °C (+4.6), 2016 5.5 °C (-3.4), 2015
Maximum Temperature 16.1 °C (-1.2) 17:22 14.0 °C (-2.2) 24.3 °C (+7.0), 2010 15.9 °C (-1.4), 2013
Mean Temperature 12.1 °C (-0.6) 10.9 °C (-1.2) 18.2 °C, 2010 12.1 °C, 2012
Minimum Humidity 71% 17:23 59% 71%, 2012 30%, 2015
Maximum Humidity 93% 06:24 89% 93%, 2012 81%, 2015
Mean Humidity 83% 76% 83%, 2012 55%, 2011
Minimum Pressure 1008 hPa 04:03 1011 hPa 1029 hPa, 2010 1001 hPa, 2014
Maximum Pressure 1010 hPa 12:00 1019 hPa 1032 hPa, 2010 1010 hPa, 2012
Mean Pressure 1009 hPa 1015 hPa 1030 hPa, 2010 1008 hPa, 2014
Mean Wind Speed 5.0 mph (+0.3) 5.0 mph (+0.3) 5.4 mph, 2011 2.9 mph, 2010
Maximum Wind Speed 10.5 mph 12.5 mph 14.5 mph, 2011 8.4 mph, 2010
Maximum Gust 15.4 mph 12:49 18.0 mph 25.8 mph, 2016 12.0 mph, 2010
Mean Wind Direction NNE
Rainfall 0.0 mm 44.3 mm (128%) 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 7.3 °C 01:42 3.9 °C 9.5 °C, 2010 1.2 °C, 2015
Maximum Dew Point 11.3 °C 23:55 8.9 °C 15.1 °C, 2010 7.6 °C, 2015
Mean Dew Point 9.3 °C 6.4 °C 12.2 °C, 2010 3.8 °C, 2015
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 9.0 °C 05:34 7.9 °C 13.5 °C, 2016 5.5 °C, 2015
Day Maximum (09-21) 16.1 °C 17:22 14.0 °C 24.3 °C, 2010 14.1 °C, 2013
Max 10m Temp Rise 0.4 °C 16:02 0.6 °C 1.7 °C, 2010 0.4 °C, 2012
Max 1hr Temp Rise 1.4 °C 16:15 1.9 °C 5.7 °C, 2011 1.0 °C, 2016
Max 1hr Hum Rise 4% 03:11 8% 11%, 2010 4%, 2012
Max 10m Temp Fall 0.2 °C 17:10 0.4 °C 1.0 °C, 2010 0.2 °C, 2012
Max 1hr Temp Fall 0.7 °C 20:38 1.4 °C 1.9 °C, 2013 0.7 °C, 2012
Max 1hr Hum Fall 5% 10:18 10% 25%, 2010 5%, 2012
Max 10m Wind Speed 7.6 mph 00:06 8.2 mph 9.4 mph, 2011 7.0 mph, 2016
Minimum Feels-like 6.2 °C 06:50 5.8 °C 14.8 °C, 2010 3.0 °C, 2015
Maximum Feels-like 17.9 °C 17:02 14.9 °C 26.9 °C, 2010 17.9 °C, 2012
Mean Feels-like 12.5 °C 10.9 °C 20.5 °C, 2010 12.5 °C, 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 7.1 °C (-1.3) 6.5 °C (-2.0) 14.6 °C (+6.2), 2015 4.2 °C (-4.2), 2016
Humidity Range 22% 31% 53%, 2009 17%, 2013
Pressure Range 2 hPa 7 hPa 10 hPa, 2014 2 hPa, 2012
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 0.5 [3%]52 hrs (41%) [18%] 13.5 [94%], 2011 0.4 [3%], 2016
Wet Hours 037 hrs (137%) [7.4%] 0.5, 2014 0, 2009
Cloud Cover am: Overcast
pm: Overcast transitioned to Mostly Cloudy
Events None
Comments -
Extra Comments
Issues None known
Observer Absent? Yes - observations may be unreliable
Notes
Times of extremes are computed using the midpoint time of the extremum (if the value persisted for >1 minute).
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; their reliablity is questionable and they are provided for interest only.
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Daily Graph of Conditions

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Webcam Summary of Cloud Conditions

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