Daily Report for 18th September 2018

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 17.6 °C (+6.6) 00:51 12.2 °C (+0.6) 17.6 °C (+6.6), 2018 6.8 °C (-4.2), 2010
Maximum Temperature 22.0 °C (+3.7) 14:30 21.2 °C (+1.5) 24.2 °C (+5.9), 2014 15.3 °C (-3.0), 2013
Mean Temperature 19.2 °C (+5.2) 16.5 °C (+1.0) 19.2 °C, 2018 11.8 °C, 2011
Minimum Humidity 57% 00:00 52% 74%, 2015 37%, 2012
Maximum Humidity 83% 05:54 90% 96%, 2014 82%, 2012
Mean Humidity 73% 73% 85%, 2015 60%, 2012
Minimum Pressure 1005 hPa 05:36 1018 hPa 1020 hPa, 2016 995 hPa, 2013
Maximum Pressure 1013 hPa 23:21 1022 hPa 1023 hPa, 2016 1008 hPa, 2011
Mean Pressure 1010 hPa 1020 hPa 1022 hPa, 2016 1004 hPa, 2013
Mean Wind Speed 9.4 mph (+5.5) 4.4 mph (+0.5) 9.4 mph, 2018 1.6 mph, 2016
Maximum Wind Speed 19.1 mph 06:20 12.6 mph 19.1 mph, 2018 7.8 mph, 2011
Maximum Gust 33.4 mph 08:26 19.8 mph 33.4 mph, 2018 10.0 mph, 2011
Mean Wind Direction SW
Rainfall 0.0 mm 4.0 mm (12%) 2.1 mm, 2015
Maximum Hourly Rain n/a 1.9, 2015
Maximum 10-min Rain n/a 1.5, 2015
Maximum Rain Rate n/a 24, 2015
Minimum Dew Point 10.1 °C 00:02 9.0 °C 13.9 °C, 2014 0.2 °C, 2012
Maximum Dew Point 15.8 °C 05:55 13.7 °C 17.7 °C, 2014 7.5 °C, 2010
Mean Dew Point 14.2 °C 11.3 °C 15.2 °C, 2014 5.4 °C, 2010
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 17.6 °C 00:52 12.3 °C 17.6 °C, 2018 6.8 °C, 2010
Day Maximum (09-21) 22.0 °C 14:30 21.1 °C 24.2 °C, 2014 15.3 °C, 2013
Max 10m Temp Rise 0.8 °C 01:14 0.6 °C 0.8 °C, 2018 0.3 °C, 2016
Max 1hr Temp Rise 1.6 °C 01:46 2.4 °C 2.9 °C, 2010 1.4 °C, 2016
Max 1hr Hum Rise 10% 03:26 9% 11%, 2017 4%, 2016
Max 10m Temp Fall 0.4 °C 00:15 0.4 °C 0.9 °C, 2015 0.2 °C, 2016
Max 1hr Temp Fall 1.2 °C 01:01 1.6 °C 2.0 °C, 2010 0.8 °C, 2016
Max 1hr Hum Fall 11% 11:14 12% 16%, 2017 6%, 2015
Max 10m Wind Speed 14.8 mph 13:17 9.2 mph 14.8 mph, 2018 5.6 mph, 2011
Minimum Feels-like 19.1 °C 00:46 13.1 °C 19.1 °C, 2018 5.2 °C, 2010
Maximum Feels-like 25.6 °C 15:49 23.5 °C 28.4 °C, 2014 15.7 °C, 2013
Mean Feels-like 22.7 °C 18.5 °C 22.9 °C, 2014 11.7 °C, 2010
Air-frost Hrs 0 hrs 0 hrs 0 hrs, 2009 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 4.4 °C (-2.9) 9.0 °C (+0.9) 9.7 °C (+2.4), 2009 4.4 °C (-2.9), 2018
Humidity Range 26% 38% 45%, 2012 18%, 2015
Pressure Range 8 hPa 4 hPa 19 hPa, 2012 2 hPa, 2010
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 2.3 [20%]108 hrs (126%) [51%] 8 [71%], 2010 0.2 [2%], 2016
Wet Hours 08 hrs (33%) [1.9%] 2.5, 2017 0, 2009
Cloud Cover am: Mostly Cloudy
pm: Partly 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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