Daily Report for 23rd September 2018

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 8.2 °C (-2.5) 11:29 12.3 °C (+0.9) 14.3 °C (+3.7), 2009 8.1 °C (-2.6), 2014
Maximum Temperature 14.2 °C (-3.4) 18:13 20.4 °C (+1.2) 19.6 °C (+2.0), 2016 11.9 °C (-5.7), 2012
Mean Temperature 10.4 °C (-2.9) 16.1 °C (+1.0) 16.3 °C, 2009 10.1 °C, 2012
Minimum Humidity 52% 17:33 54% 77%, 2013 44%, 2016
Maximum Humidity 96% 10:34 90% 98%, 2012 82%, 2017
Mean Humidity 84% 75% 91%, 2013 63%, 2016
Minimum Pressure 1013 hPa 10:34 1015 hPa 1025 hPa, 2009 997 hPa, 2012
Maximum Pressure 1031 hPa 23:56 1022 hPa 1031 hPa, 2018 1013 hPa, 2010
Mean Pressure 1019 hPa 1019 hPa 1026 hPa, 2009 1008 hPa, 2010
Mean Wind Speed 3.6 mph (-0.3) 5.0 mph (+1.1) 5.5 mph, 2015 1.2 mph, 2013
Maximum Wind Speed 12.8 mph 14:01 14.1 mph 14.3 mph, 2012 5.9 mph, 2013
Maximum Gust 19.5 mph 14:01 21.9 mph 23.0 mph, 2012 7.6 mph, 2013
Mean Wind Direction N
Rainfall 11.0 mm 26.0 mm (59%) 21.8 mm, 2012
Maximum Hourly Rain 5.0 mm 10:00 6.4 mm, 2012
Maximum 10-min Rain 0.5 mm 10:00 2.0 mm, 2012
Maximum Rain Rate 10 mm/h 10:00 30 mm/h, 2012
Minimum Dew Point 6.1 °C 23:58 9.1 °C 12.1 °C, 2013 3.7 °C, 2012
Maximum Dew Point 8.7 °C 10:34 13.6 °C 15.9 °C, 2013 8.7 °C, 2018
Mean Dew Point 7.6 °C 11.3 °C 14.2 °C, 2013 7.4 °C, 2016
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) * 9.5 °C * 08:59 12.5 °C 14.7 °C, 2010 8.1 °C, 2014
Day Maximum (09-21) 14.2 °C 18:13 20.2 °C 19.6 °C, 2016 11.8 °C, 2012
Max 10m Temp Rise 0.2 °C 14:12 0.6 °C 0.8 °C, 2011 0.2 °C, 2018
Max 1hr Temp Rise 1.0 °C 14:12 2.2 °C 3.8 °C, 2016 1.0 °C, 2018
Max 1hr Hum Rise 9% 22:10 9% 11%, 2017 5%, 2011
Max 10m Temp Fall 0.3 °C 21:17 0.4 °C 0.5 °C, 2010 0.2 °C, 2015
Max 1hr Temp Fall 1.2 °C 22:08 1.6 °C 2.3 °C, 2016 0.7 °C, 2015
Max 1hr Hum Fall 12% 14:32 11% 15%, 2015 2%, 2012
Max 10m Wind Speed 7.1 mph 00:10 10.1 mph 11.0 mph, 2012 4.1 mph, 2013
Minimum Feels-like 8.1 °C 23:27 13.4 °C 16.1 °C, 2009 6.0 °C, 2012
Maximum Feels-like 14.0 °C 00:00 22.8 °C 23.0 °C, 2013 14.0 °C, 2012
Mean Feels-like 11.7 °C 18.1 °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) 8.2 °C (+0.3) 11.1 °C (+4.1), 2016 3.6 °C (-3.4), 2009
Humidity Range 44% 36% 47%, 2014 17%, 2010
Pressure Range 18 hPa 6 hPa 22 hPa, 2012 2 hPa, 2009
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 4 [36%]121 hrs (113%) [45%] 10 [91%], 2016 0 [0%], 2009
Wet Hours 8
[Mean rain rate: 1.4 mm/h]
29 hrs (92%) [5.3%] 10, 2012 0, 2009
Cloud Cover am: Overcast
pm: Mostly Sunny
Events None
Comments am Rain
Extra Comments
Issues No data -21, then N16
Observer Absent? Yes - observations may be unreliable
Pond Temperature (Heath) 0.0 °C
Notes
Times of extremes are computed using the midpoint of the longest continuous period at that extreme value.
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 (entered with a delay of 1-10 days); their reliablity is questionable and they are provided for interest only.
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