Daily Report for 20th May 2017

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 8.0 °C (-0.7) 05:26 9.1 °C (+1.5) 14.1 °C (+5.4), 2014 5.1 °C (-3.6), 2015
Maximum Temperature 16.5 °C (-0.5) 10:59 16.7 °C (+0.7) 22.4 °C (+5.4), 2010 11.7 °C (-5.3), 2012
Mean Temperature 12.7 °C (-0.6) 12.6 °C (+1.1) 17.4 °C, 2014 10.1 °C, 2012
Minimum Humidity 53% 15:14 55% 80%, 2012 41%, 2011
Maximum Humidity 83% 07:10 83% 93%, 2013 67%, 2011
Mean Humidity 68% 70% 85%, 2013 53%, 2011
Minimum Pressure 1014 hPa 00:00 1012 hPa 1030 hPa, 2010 1003 hPa, 2014
Maximum Pressure 1024 hPa 23:44 1020 hPa 1033 hPa, 2010 1010 hPa, 2014
Mean Pressure 1018 hPa 1016 hPa 1032 hPa, 2010 1006 hPa, 2014
Mean Wind Speed 5.1 mph (+0.4) 4.4 mph (-0.3) 5.8 mph, 2012 2.2 mph, 2010
Maximum Wind Speed 15.2 mph 13:41 11.5 mph 15.2 mph, 2017 7.1 mph, 2010
Maximum Gust 24.1 mph 15:26 17.9 mph 24.1 mph, 2017 10.0 mph, 2010
Mean Wind Direction WSW
Rainfall 1.5 mm 65.8 mm (200%) 1.5 mm, 2017
Maximum Hourly Rain 1.0 mm 13:50 1.0 mm, 2017
Maximum 10-min Rain 0.8 mm 13:44 0.8 mm, 2017
Maximum Rain Rate 18 mm/h 13:44 18 mm/h, 2017
Minimum Dew Point 4.7 °C 01:27 4.8 °C 8.3 °C, 2010 1.1 °C, 2015
Maximum Dew Point 9.0 °C 08:54 9.4 °C 14.9 °C, 2010 5.7 °C, 2015
Mean Dew Point 6.6 °C 7.2 °C 11.6 °C, 2010 3.2 °C, 2015
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 8.0 °C 05:26 9.4 °C 15.3 °C, 2014 5.1 °C, 2015
Day Maximum (09-21) 16.5 °C 10:59 16.7 °C 22.4 °C, 2010 11.7 °C, 2012
Max 10m Temp Rise 0.7 °C 13:57 0.6 °C 0.9 °C, 2009 0.4 °C, 2012
Max 1hr Temp Rise 3.0 °C 08:10 1.9 °C 3.0 °C, 2017 1.1 °C, 2012
Max 1hr Hum Rise 10% 13:53 9% 10%, 2015 2%, 2012
Max 10m Temp Fall 0.9 °C 13:12 0.5 °C 0.9 °C, 2017 0.2 °C, 2012
Max 1hr Temp Fall 1.8 °C 01:21 1.7 °C 2.5 °C, 2015 0.5 °C, 2012
Max 1hr Hum Fall 14% 09:30 10% 14%, 2017 5%, 2012
Max 10m Wind Speed 11.2 mph 13:42 8.8 mph 11.2 mph, 2017 5.1 mph, 2016
Minimum Feels-like 5.8 °C 04:07 7.7 °C 14.9 °C, 2016 2.0 °C, 2015
Maximum Feels-like 16.6 °C 10:54 17.5 °C 25.5 °C, 2010 12.4 °C, 2012
Mean Feels-like 12.6 °C 12.8 °C 18.8 °C, 2014 9.5 °C, 2015
Air-frost Hrs 0 hrs 0 hrs 0 hrs, 2009 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 8.5 °C (+0.1) 7.7 °C (-0.8) 11.6 °C (+3.2), 2010 3.1 °C (-5.3), 2012
Humidity Range 30% 28% 48%, 2009 7%, 2012
Pressure Range 10 hPa 8 hPa 13 hPa, 2015 2 hPa, 2012
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 7 [49%]73 hrs (61%) [26%] 7 [49%], 2011 0 [0%], 2012
Wet Hours 1
[Mean rain rate: 1.5 mm/h]
39 hrs (151%) [8.1%] 1, 2013 0, 2009
Cloud Cover am: Sunny transitioned to Partly Cloudy
pm: Partly Cloudy
Events None
Comments 12-15 Showers
Extra Comments
Issues Rn data from N16
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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