Daily Report for 20th May 2012

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 8.6 °C (-0.2) 04:10 7.5 °C (-0.2) 14.1 °C (+5.3), 2014 8.3 °C (-0.5), 2009
Maximum Temperature 11.7 °C (-5.5) 15:55 13.9 °C (-2.2) 22.4 °C (+5.2), 2010 11.7 °C (-5.5), 2012
Mean Temperature 10.1 °C (-2.8) 10.8 °C (-1.2) 17.4 °C, 2014 10.1 °C, 2012
Minimum Humidity 80% 14:10 58% 80%, 2012 41%, 2011
Maximum Humidity 87% 23:59 89% 93%, 2013 67%, 2011
Mean Humidity 83% 75% 85%, 2013 53%, 2011
Minimum Pressure 1010 hPa 19:55 1012 hPa 1030 hPa, 2010 1003 hPa, 2014
Maximum Pressure 1012 hPa 00:47 1019 hPa 1033 hPa, 2010 1010 hPa, 2014
Mean Pressure 1011 hPa 1015 hPa 1032 hPa, 2010 1006 hPa, 2014
Mean Wind Speed 5.8 mph (+1.1) 5.0 mph (+0.3) 5.8 mph, 2012 2.2 mph, 2010
Maximum Wind Speed 12.1 mph 12.6 mph 12.1 mph, 2012 7.1 mph, 2010
Maximum Gust 17.0 mph 12:33 18.2 mph 19.7 mph, 2014 10.0 mph, 2010
Mean Wind Direction NE
Rainfall 0.0 mm 44.3 mm (135%) 0.1 mm, 2013
Maximum Hourly Rain n/a n/a
Maximum 10-min Rain n/a n/a
Maximum Rain Rate n/a n/a
Minimum Dew Point 5.8 °C 01:24 3.7 °C 8.3 °C, 2010 4.1 °C, 2011
Maximum Dew Point 8.7 °C 17:35 8.8 °C 14.9 °C, 2010 7.8 °C, 2011
Mean Dew Point 7.4 °C 6.2 °C 11.6 °C, 2010 5.3 °C, 2011
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 8.6 °C 04:10 7.9 °C 15.3 °C, 2014 8.3 °C, 2009
Day Maximum (09-21) 11.7 °C 15:55 13.9 °C 22.4 °C, 2010 11.7 °C, 2012
Max 10m Temp Rise 0.4 °C 13:30 0.6 °C 0.9 °C, 2009 0.4 °C, 2012
Max 1hr Temp Rise 1.1 °C 11:09 1.9 °C 2.5 °C, 2011 1.1 °C, 2012
Max 1hr Hum Rise 2% 01:01 8% 8%, 2009 2%, 2012
Max 10m Temp Fall 0.2 °C 00:14 0.4 °C 0.4 °C, 2014 0.2 °C, 2012
Max 1hr Temp Fall 0.5 °C 01:04 1.5 °C 1.6 °C, 2010 0.5 °C, 2012
Max 1hr Hum Fall 5% 11:13 10% 11%, 2010 5%, 2012
Max 10m Wind Speed 7.7 mph 01:36 8.2 mph 9.5 mph, 2014 7.0 mph, 2013
Minimum Feels-like 5.6 °C 02:56 5.8 °C 14.8 °C, 2014 5.6 °C, 2012
Maximum Feels-like 12.4 °C 17:34 14.7 °C 25.5 °C, 2010 12.4 °C, 2012
Mean Feels-like 9.6 °C 10.8 °C 18.8 °C, 2014 9.6 °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 3.1 °C (-5.3) 6.4 °C (-2.0) 11.6 °C (+3.2), 2010 3.1 °C (-5.3), 2012
Humidity Range 7% 31% 48%, 2009 7%, 2012
Pressure Range 2 hPa 8 hPa 7 hPa, 2014 2 hPa, 2012
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 0 [0%]52 hrs (43%) [18%] 7 [49%], 2011 0 [0%], 2012
Wet Hours 037 hrs (144%) [7.7%] 1, 2013 0, 2009
Cloud Cover Overcast
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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