Daily Report for 17th September 2017

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 8.8 °C (-2.3) 01:49 10.4 °C (-1.2) 15.7 °C (+4.6), 2014 7.4 °C (-3.7), 2010
Maximum Temperature 16.5 °C (-2.0) 15:57 18.5 °C (-1.3) 19.6 °C (+1.1), 2014 13.4 °C (-5.1), 2013
Mean Temperature 11.9 °C (-2.1) 14.3 °C (-1.3) 17.1 °C, 2014 11.1 °C, 2013
Minimum Humidity 60% 16:18 58% 79%, 2016 41%, 2012
Maximum Humidity 95% 04:04 91% 95%, 2013 84%, 2009
Mean Humidity 84% 78% 86%, 2014 65%, 2012
Minimum Pressure 1012 hPa 03:45 1005 hPa 1021 hPa, 2009 987 hPa, 2015
Maximum Pressure 1016 hPa 22:45 1013 hPa 1023 hPa, 2009 1005 hPa, 2013
Mean Pressure 1013 hPa 1009 hPa 1022 hPa, 2009 999 hPa, 2015
Mean Wind Speed 2.2 mph (-1.7) 4.9 mph (+1.0) 8.3 mph, 2016 2.2 mph, 2017
Maximum Wind Speed 8.6 mph 16:52 13.6 mph 20.5 mph, 2016 8.1 mph, 2014
Maximum Gust 15.0 mph 16:48 21.3 mph 30.6 mph, 2016 12.5 mph, 2014
Mean Wind Direction N
Rainfall 0.0 mm 27.3 mm (85%) 5.5 mm, 2013
Maximum Hourly Rain n/a 2.4, 2013
Maximum 10-min Rain n/a 0.6, 2013
Maximum Rain Rate n/a 4.5, 2013
Minimum Dew Point 7.5 °C 00:53 7.9 °C 13.9 °C, 2014 2.8 °C, 2010
Maximum Dew Point 11.0 °C 13:49 12.8 °C 16.0 °C, 2014 8.4 °C, 2010
Mean Dew Point 9.2 °C 10.2 °C 14.8 °C, 2014 5.1 °C, 2010
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 8.8 °C 01:49 10.6 °C 15.7 °C, 2014 7.8 °C, 2013
Day Maximum (09-21) 16.5 °C 15:57 18.5 °C 19.6 °C, 2014 13.4 °C, 2013
Max 10m Temp Rise 0.5 °C 12:28 0.6 °C 0.7 °C, 2013 0.3 °C, 2016
Max 1hr Temp Rise 1.5 °C 12:51 2.0 °C 2.8 °C, 2010 0.8 °C, 2016
Max 1hr Hum Rise 11% 17:37 12% 13%, 2013 4%, 2014
Max 10m Temp Fall 0.5 °C 17:05 0.7 °C 0.5 °C, 2010 0.2 °C, 2014
Max 1hr Temp Fall 1.8 °C 17:48 1.8 °C 2.6 °C, 2010 0.8 °C, 2014
Max 1hr Hum Fall 12% 16:00 10% 26%, 2012 2%, 2016
Max 10m Wind Speed 6.7 mph 16:55 10.1 mph 14.0 mph, 2016 6.5 mph, 2014
Minimum Feels-like 7.4 °C 02:03 10.3 °C 19.0 °C, 2014 5.1 °C, 2013
Maximum Feels-like 18.0 °C 15:10 20.4 °C 24.1 °C, 2014 15.4 °C, 2010
Mean Feels-like 12.6 °C 15.6 °C 20.9 °C, 2014 11.3 °C, 2010
Air-frost Hrs 0 hrs 0 hrs 0 hrs, 2009 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 7.7 °C (+0.3) 8.1 °C (-0.1) 8.3 °C (+0.9), 2011 3.9 °C (-3.5), 2014
Humidity Range 35% 33% 47%, 2012 10%, 2016
Pressure Range 4 hPa 8 hPa 20 hPa, 2015 2 hPa, 2009
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 3 [26%]73 hrs (90%) [36%] 7 [62%], 2015 0 [0%], 2016
Wet Hours 030 hrs (127%) [7.2%] 5, 2013 0, 2009
Cloud Cover am: Overcast
pm: Partly 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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