Daily Report for 23rd September 2017

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 13.1 °C (+2.4) 00:18 10.2 °C (-1.1) 14.3 °C (+3.7), 2009 8.1 °C (-2.6), 2014
Maximum Temperature 19.1 °C (+1.5) 15:16 18.2 °C (-1.1) 19.6 °C (+2.0), 2016 11.9 °C (-5.7), 2012
Mean Temperature 15.9 °C (+2.0) 14.1 °C (-1.1) 16.3 °C, 2009 10.1 °C, 2012
Minimum Humidity 51% 15:59 59% 77%, 2013 44%, 2016
Maximum Humidity 82% 04:01 92% 98%, 2012 82%, 2017
Mean Humidity 70% 78% 91%, 2013 63%, 2016
Minimum Pressure 1020 hPa 19:01 1008 hPa 1025 hPa, 2009 997 hPa, 2012
Maximum Pressure 1023 hPa 06:01 1015 hPa 1028 hPa, 2013 1013 hPa, 2010
Mean Pressure 1022 hPa 1012 hPa 1026 hPa, 2009 1008 hPa, 2010
Mean Wind Speed 4.0 mph (+0.1) 4.6 mph (+0.7) 5.5 mph, 2015 1.2 mph, 2013
Maximum Wind Speed 9.4 mph 11:53 12.9 mph 14.3 mph, 2012 5.9 mph, 2013
Maximum Gust 16.1 mph 11:49 20.1 mph 23.0 mph, 2012 7.6 mph, 2013
Mean Wind Direction S
Rainfall 0.0 mm 31.3 mm (72%) 21.8 mm, 2012
Maximum Hourly Rain n/a 6.4, 2012
Maximum 10-min Rain n/a 2, 2012
Maximum Rain Rate n/a 30, 2012
Minimum Dew Point 6.6 °C 21:00 7.8 °C 12.1 °C, 2013 3.7 °C, 2012
Maximum Dew Point 12.4 °C 10:37 12.6 °C 15.9 °C, 2013 9.9 °C, 2016
Mean Dew Point 10.2 °C 10.1 °C 14.2 °C, 2013 7.4 °C, 2016
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 13.1 °C 00:18 10.5 °C 14.7 °C, 2010 8.1 °C, 2014
Day Maximum (09-21) 19.1 °C 15:16 18.2 °C 19.6 °C, 2016 11.8 °C, 2012
Max 10m Temp Rise 0.5 °C 11:04 0.6 °C 0.8 °C, 2011 0.3 °C, 2012
Max 1hr Temp Rise 1.5 °C 10:07 2.1 °C 3.8 °C, 2016 1.1 °C, 2013
Max 1hr Hum Rise 11% 23:18 11% 11%, 2017 5%, 2011
Max 10m Temp Fall 0.3 °C 18:11 0.6 °C 0.5 °C, 2010 0.2 °C, 2015
Max 1hr Temp Fall 1.3 °C 19:20 1.8 °C 2.3 °C, 2016 0.7 °C, 2015
Max 1hr Hum Fall 10% 11:35 11% 15%, 2015 2%, 2012
Max 10m Wind Speed 7.3 mph 12:38 9.5 mph 11.0 mph, 2012 4.1 mph, 2013
Minimum Feels-like 14.4 °C 00:18 10.1 °C 16.1 °C, 2009 6.0 °C, 2012
Maximum Feels-like 20.8 °C 13:05 20.1 °C 23.0 °C, 2013 14.0 °C, 2012
Mean Feels-like 17.2 °C 15.4 °C 19.3 °C, 2013 10.4 °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 6.0 °C (-1.0) 7.9 °C (+0.1) 11.1 °C (+4.1), 2016 3.6 °C (-3.4), 2009
Humidity Range 31% 33% 47%, 2014 17%, 2010
Pressure Range 3 hPa 7 hPa 22 hPa, 2012 2 hPa, 2009
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 1.2 [11%]94 hrs (87%) [35%] 10 [91%], 2016 0 [0%], 2009
Wet Hours 037 hrs (118%) [6.7%] 10, 2012 0, 2009
Cloud Cover 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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