Daily Report for 4th September 2017

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 13.7 °C (+1.6) 00:00 10.7 °C (-1.4) 15.9 °C (+3.8), 2016 10.1 °C (-2.0), 2010
Maximum Temperature 21.6 °C (+0.8) 15:21 21.1 °C (+0.3) 26.8 °C (+6.0), 2013 15.3 °C (-5.5), 2015
Mean Temperature 17.4 °C (+1.2) 16.1 °C (-0.6) 19.7 °C, 2013 12.8 °C, 2015
Minimum Humidity 80% 16:55 52% 80%, 2017 42%, 2013
Maximum Humidity 97% 08:37 88% 97%, 2017 84%, 2015
Mean Humidity 90% 70% 90%, 2017 67%, 2009
Minimum Pressure 1009 hPa 04:01 1014 hPa 1022 hPa, 2012 1003 hPa, 2009
Maximum Pressure 1015 hPa 22:45 1021 hPa 1025 hPa, 2012 1007 hPa, 2011
Mean Pressure 1012 hPa 1018 hPa 1024 hPa, 2012 1006 hPa, 2011
Mean Wind Speed 4.0 mph (+0.1) 2.5 mph (-1.4) 9.0 mph, 2016 2.3 mph, 2013
Maximum Wind Speed 12.0 mph 17:57 9.6 mph 20.2 mph, 2016 7.8 mph, 2014
Maximum Gust 19.6 mph 17:58 15.1 mph 32.3 mph, 2016 10.7 mph, 2014
Mean Wind Direction S
Rainfall 8.0 mm 8.3 mm (109%) 8.0 mm, 2017
Maximum Hourly Rain 2.4 mm 06:28 3.3 mm, 2011
Maximum 10-min Rain 1.4 mm 05:43 1.4 mm, 2017
Maximum Rain Rate 12 mm/h 05:41 12 mm/h, 2017
Minimum Dew Point 12.4 °C 00:00 7.5 °C 13.2 °C, 2016 4.9 °C, 2009
Maximum Dew Point 18.6 °C 15:04 13.4 °C 18.6 °C, 2017 9.3 °C, 2009
Mean Dew Point 15.7 °C 10.2 °C 15.7 °C, 2017 7.4 °C, 2009
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) * 13.0 °C * 21:03 10.5 °C 15.9 °C, 2016 10.1 °C, 2010
Day Maximum (09-21) 21.6 °C 15:21 21.1 °C 26.8 °C, 2013 15.3 °C, 2015
Max 10m Temp Rise 0.5 °C 12:00 0.7 °C 0.9 °C, 2010 0.4 °C, 2016
Max 1hr Temp Rise 1.5 °C 12:00 2.3 °C 3.7 °C, 2013 1.0 °C, 2016
Max 1hr Hum Rise 3% 22:19 9% 9%, 2013 3%, 2017
Max 10m Temp Fall 0.3 °C 17:39 0.8 °C 0.6 °C, 2012 0.2 °C, 2014
Max 1hr Temp Fall 1.0 °C 18:20 1.5 °C 2.3 °C, 2012 0.7 °C, 2014
Max 1hr Hum Fall 7% 15:43 8% 17%, 2016 7%, 2015
Max 10m Wind Speed 8.9 mph 18:17 7.2 mph 16.5 mph, 2016 5.7 mph, 2015
Minimum Feels-like 16.2 °C 00:00 11.0 °C 20.1 °C, 2016 10.3 °C, 2015
Maximum Feels-like 28.1 °C 15:15 24.0 °C 30.5 °C, 2013 16.4 °C, 2015
Mean Feels-like 21.8 °C 17.6 °C 23.4 °C, 2013 13.2 °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 7.9 °C (-0.8) 10.4 °C (+1.6) 13.3 °C (+4.6), 2013 3.7 °C (-5.0), 2016
Humidity Range 17% 36% 54%, 2013 17%, 2017
Pressure Range 6 hPa 7 hPa 13 hPa, 2009 2 hPa, 2010
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 0.5 [4%]22 hrs (109%) [44%] 12 [99%], 2013 0.1 [1%], 2016
Wet Hours 11
[Mean rain rate: 0.7 mm/h]
13 hrs (238%) [14%] 11, 2017 0, 2009
Cloud Cover am: Overcast
pm: Mostly Cloudy
Events None
Comments -11 Rain
Extra Comments First full day of new weather station
Issues tip size corrected at 10am
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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