Daily Report for 21st September 2018

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 10.8 °C (+0.0) 07:43 12.6 °C (+1.1) 14.0 °C (+3.2), 2016 9.5 °C (-1.3), 2010
Maximum Temperature 18.8 °C (+0.9) 01:25 21.1 °C (+1.6) 21.4 °C (+3.5), 2016 15.2 °C (-2.7), 2015
Mean Temperature 14.3 °C (+0.5) 16.6 °C (+1.4) 17.5 °C, 2016 13.1 °C, 2012
Minimum Humidity 53% 18:17 53% 79%, 2013 44%, 2009
Maximum Humidity 88% 02:16 90% 95%, 2010 85%, 2016
Mean Humidity 69% 74% 87%, 2015 69%, 2018
Minimum Pressure 997 hPa 01:53 1016 hPa 1024 hPa, 2009 997 hPa, 2018
Maximum Pressure 1019 hPa 23:37 1021 hPa 1027 hPa, 2009 1018 hPa, 2011
Mean Pressure 1008 hPa 1019 hPa 1026 hPa, 2009 1008 hPa, 2018
Mean Wind Speed 10.6 mph (+6.7) 5.2 mph (+1.3) 10.6 mph, 2018 2.2 mph, 2010
Maximum Wind Speed 26.7 mph 15:54 14.3 mph 26.7 mph, 2018 8.5 mph, 2012
Maximum Gust 38.0 mph 15:45 22.4 mph 38.0 mph, 2018 12.3 mph, 2010
Mean Wind Direction WSW
Rainfall 2.2 mm 7.0 mm (18%) 4.8 mm, 2015
Maximum Hourly Rain 2.2 mm 02:33 2.2 mm, 2018
Maximum 10-min Rain 1.2 mm 02:26 1.2 mm, 2018
Maximum Rain Rate 24 mm/h 02:22 24 mm/h, 2018
Minimum Dew Point 5.8 °C 12:19 9.3 °C 10.8 °C, 2016 5.8 °C, 2018
Maximum Dew Point 16.1 °C 02:03 14.0 °C 16.1 °C, 2018 9.5 °C, 2012
Mean Dew Point 8.6 °C 11.5 °C 12.2 °C, 2017 7.6 °C, 2012
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 10.8 °C 07:43 12.7 °C 14.2 °C, 2017 9.5 °C, 2010
Day Maximum (09-21) * 16.1 °C * 17:00 20.8 °C 21.4 °C, 2016 15.2 °C, 2015
Max 10m Temp Rise 0.4 °C 08:10 0.6 °C 0.8 °C, 2010 0.2 °C, 2015
Max 1hr Temp Rise 1.3 °C 12:37 2.3 °C 3.5 °C, 2010 0.5 °C, 2015
Max 1hr Hum Rise 11% 13:56 9% 19%, 2012 4%, 2013
Max 10m Temp Fall 1.6 °C 02:33 0.5 °C 1.6 °C, 2018 0.2 °C, 2015
Max 1hr Temp Fall 3.5 °C 02:40 1.6 °C 3.5 °C, 2018 1.0 °C, 2015
Max 1hr Hum Fall 9% 09:27 12% 16%, 2016 4%, 2013
Max 10m Wind Speed 18.4 mph 15:59 10.4 mph 18.4 mph, 2018 6.0 mph, 2012
Minimum Feels-like 10.8 °C 07:30 13.7 °C 15.7 °C, 2016 8.7 °C, 2013
Maximum Feels-like 23.3 °C 01:25 23.7 °C 24.1 °C, 2010 16.5 °C, 2012
Mean Feels-like 15.1 °C 18.7 °C 19.9 °C, 2016 13.4 °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 8.0 °C (+0.9) 8.5 °C (+0.5) 11.8 °C (+4.7), 2010 3.9 °C (-3.2), 2015
Humidity Range 35% 36% 47%, 2009 15%, 2013
Pressure Range 22 hPa 6 hPa 22 hPa, 2018 2 hPa, 2011
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 7 [63%]117 hrs (119%) [48%] 7 [63%], 2010 0 [0%], 2015
Wet Hours 1
[Mean rain rate: 2.2 mm/h]
11 hrs (38%) [2.2%] 4, 2015 0, 2009
Cloud Cover am: Sunny transitioned to Partly Cloudy
pm: Partly Cloudy transitioned to Mostly Sunny
Events None
Comments o.night Shower
Extra Comments
Issues None known
Observer Absent? Yes - observations may be unreliable
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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