Daily Report for 18th May 2017

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 10.0 °C (+1.6) 23:45 9.1 °C (+1.7) 11.4 °C (+3.0), 2011 5.7 °C (-2.7), 2010
Maximum Temperature 17.5 °C (+0.7) 12:00 16.8 °C (+0.9) 24.5 °C (+7.7), 2014 14.6 °C (-2.2), 2016
Mean Temperature 12.7 °C (+1.2) 12.7 °C (+1.3) 18.7 °C, 2014 11.7 °C, 2013
Minimum Humidity 53% 14:30 55% 71%, 2016 33%, 2014
Maximum Humidity 87% 00:35 83% 94%, 2015 75%, 2013
Mean Humidity 76% 70% 81%, 2011 56%, 2014
Minimum Pressure 1011 hPa 00:04 1012 hPa 1027 hPa, 2010 1002 hPa, 2012
Maximum Pressure 1017 hPa 08:00 1020 hPa 1030 hPa, 2010 1009 hPa, 2012
Mean Pressure 1014 hPa 1016 hPa 1028 hPa, 2010 1005 hPa, 2016
Mean Wind Speed 1.7 mph (-3.0) 4.5 mph (-0.2) 8.3 mph, 2015 1.7 mph, 2017
Maximum Wind Speed 7.1 mph 00:18 11.6 mph 21.0 mph, 2015 7.1 mph, 2017
Maximum Gust 10.5 mph 00:18 17.9 mph 39.8 mph, 2015 10.3 mph, 2010
Mean Wind Direction NW
Rainfall 15.0 mm 63.3 mm (214%) 15.0 mm, 2017
Maximum Hourly Rain 2.3 mm 20:23 3.2 mm, 2016
Maximum 10-min Rain 0.8 mm 16:18 2.0 mm, 2016
Maximum Rain Rate 18 mm/h 30 mm/h, 2016
Minimum Dew Point 7.1 °C 18:26 4.8 °C 8.3 °C, 2011 0.2 °C, 2015
Maximum Dew Point 10.5 °C 09:08 9.5 °C 13.6 °C, 2014 6.4 °C, 2013
Mean Dew Point 8.4 °C 7.2 °C 11.4 °C, 2011 5.1 °C, 2013
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) * 10.1 °C * 05:12 9.5 °C 13.1 °C, 2011 5.7 °C, 2010
Day Maximum (09-21) 17.5 °C 12:00 16.8 °C 24.5 °C, 2014 14.6 °C, 2016
Max 10m Temp Rise 0.6 °C 08:57 0.6 °C 0.8 °C, 2012 0.4 °C, 2011
Max 1hr Temp Rise 2.2 °C 08:07 1.9 °C 4.0 °C, 2014 1.2 °C, 2011
Max 1hr Hum Rise 12% 16:30 9% 16%, 2011 5%, 2013
Max 10m Temp Fall 0.5 °C 15:48 0.5 °C 0.7 °C, 2015 0.3 °C, 2013
Max 1hr Temp Fall 2.1 °C 16:38 1.6 °C 2.1 °C, 2017 0.9 °C, 2012
Max 1hr Hum Fall 11% 10:08 10% 22%, 2015 7%, 2016
Max 10m Wind Speed 5.1 mph 00:27 8.8 mph 18.0 mph, 2015 5.1 mph, 2017
Minimum Feels-like 10.2 °C 23:32 7.8 °C 12.1 °C, 2014 4.4 °C, 2010
Maximum Feels-like 18.6 °C 11:58 17.6 °C 25.1 °C, 2014 15.2 °C, 2013
Mean Feels-like 13.3 °C 12.9 °C 19.7 °C, 2014 11.4 °C, 2013
Air-frost Hrs 0 hrs 0 hrs 0 hrs, 2009 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 7.5 °C (-0.9) 7.7 °C (-0.8) 13.3 °C (+4.9), 2014 3.4 °C (-5.0), 2016
Humidity Range 34% 28% 58%, 2014 15%, 2016
Pressure Range 6 hPa 8 hPa 15 hPa, 2015 3 hPa, 2010
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 5 [35%]65 hrs (60%) [26%] 13.5 [95%], 2014 0.1 [1%], 2016
Wet Hours 9
[Mean rain rate: 1.7 mm/h]
35 hrs (151%) [8.1%] 9, 2017 0, 2010
Cloud Cover am: Mostly Sunny
pm: Overcast
Events None
Comments 15- Rain
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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