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 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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