Daily Report for 27th September 2017

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 13.3 °C (+2.9) 07:33 10.7 °C (-0.6) 13.3 °C (+2.9), 2017 8.7 °C (-1.7), 2015
Maximum Temperature 20.7 °C (+3.6) 15:16 18.5 °C (-0.5) 20.9 °C (+3.8), 2009 15.7 °C (-1.4), 2010
Mean Temperature 16.3 °C (+3.3) 14.4 °C (-0.5) 16.6 °C, 2014 12.6 °C, 2012
Minimum Humidity 64% 15:19 59% 80%, 2010 51%, 2015
Maximum Humidity 95% 05:14 92% 98%, 2010 84%, 2016
Mean Humidity 85% 79% 91%, 2010 72%, 2015
Minimum Pressure 1017 hPa 20:00 1010 hPa 1031 hPa, 2015 999 hPa, 2012
Maximum Pressure 1023 hPa 00:15 1016 hPa 1036 hPa, 2015 1013 hPa, 2012
Mean Pressure 1019 hPa 1013 hPa 1033 hPa, 2015 1007 hPa, 2012
Mean Wind Speed 4.1 mph (+0.2) 4.4 mph (+0.5) 6.8 mph, 2016 0.8 mph, 2014
Maximum Wind Speed 10.0 mph 14:00 12.5 mph 20.8 mph, 2016 4.9 mph, 2014
Maximum Gust 17.3 mph 16:43 19.3 mph 33.9 mph, 2016 7.8 mph, 2014
Mean Wind Direction SE
Rainfall 12.6 mm 44.5 mm (87%) 12.6 mm, 2017
Maximum Hourly Rain 4.4 mm 23:41 4.4 mm, 2017
Maximum 10-min Rain 1.2 mm 21:10 1.2 mm, 2017
Maximum Rain Rate 12 mm/h 21:03 12 mm/h, 2017
Minimum Dew Point 12.5 °C 07:33 8.3 °C 12.5 °C, 2017 5.4 °C, 2015
Maximum Dew Point 14.9 °C 12:30 12.9 °C 15.8 °C, 2011 10.9 °C, 2012
Mean Dew Point 13.6 °C 10.5 °C 13.6 °C, 2011 7.9 °C, 2015
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 13.3 °C 07:33 10.9 °C 13.3 °C, 2017 8.7 °C, 2015
Day Maximum (09-21) 20.7 °C 15:16 18.5 °C 20.9 °C, 2009 15.7 °C, 2010
Max 10m Temp Rise 0.5 °C 12:04 0.6 °C 0.7 °C, 2015 0.3 °C, 2011
Max 1hr Temp Rise 1.6 °C 12:35 2.0 °C 3.0 °C, 2015 1.3 °C, 2011
Max 1hr Hum Rise 11% 20:24 11% 17%, 2012 3%, 2010
Max 10m Temp Fall 0.3 °C 15:30 0.6 °C 0.6 °C, 2012 0.1 °C, 2010
Max 1hr Temp Fall 1.2 °C 20:49 1.7 °C 2.3 °C, 2012 0.4 °C, 2010
Max 1hr Hum Fall 9% 12:55 11% 14%, 2013 5%, 2016
Max 10m Wind Speed 7.7 mph 16:44 9.2 mph 14.5 mph, 2016 3.7 mph, 2014
Minimum Feels-like 15.8 °C 07:19 10.9 °C 15.8 °C, 2017 7.2 °C, 2015
Maximum Feels-like 24.2 °C 15:10 20.5 °C 24.5 °C, 2011 16.7 °C, 2012
Mean Feels-like 19.4 °C 15.9 °C 19.4 °C, 2017 13.3 °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 7.4 °C (+0.6) 7.8 °C (+0.1) 11.9 °C (+5.1), 2009 5.0 °C (-1.8), 2010
Humidity Range 31% 33% 42%, 2012 13%, 2016
Pressure Range 6 hPa 6 hPa 14 hPa, 2012 2 hPa, 2009
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 1 [9%]108 hrs (86%) [35%] 9.5 [88%], 2009 0.1 [1%], 2010
Wet Hours 4
[Mean rain rate: 3.1 mm/h]
43 hrs (115%) [6.6%] 4, 2017 0, 2009
Cloud Cover Overcast or Hazy
Events None
Comments 20- Rain
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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