Daily Report for 20th September 2018

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 16.7 °C (+5.8) 07:01 12.6 °C (+1.1) 16.7 °C (+5.8), 2018 8.4 °C (-2.5), 2015
Maximum Temperature 20.6 °C (+2.6) 14:52 21.2 °C (+1.7) 20.6 °C (+2.6), 2018 17.3 °C (-0.7), 2012
Mean Temperature 18.6 °C (+4.2) 16.7 °C (+1.4) 18.6 °C, 2018 13.2 °C, 2012
Minimum Humidity 70% 16:08 53% 92%, 2014 47%, 2010
Maximum Humidity 90% 07:02 90% 96%, 2014 78%, 2012
Mean Humidity 80% 74% 94%, 2014 62%, 2012
Minimum Pressure 1000 hPa 23:59 1017 hPa 1021 hPa, 2015 1000 hPa, 2018
Maximum Pressure 1014 hPa 00:01 1022 hPa 1027 hPa, 2015 1014 hPa, 2018
Mean Pressure 1010 hPa 1019 hPa 1025 hPa, 2015 1010 hPa, 2018
Mean Wind Speed 9.6 mph (+5.7) 4.9 mph (+1.0) 9.6 mph, 2018 1.8 mph, 2016
Maximum Wind Speed 23.0 mph 23:39 13.7 mph 23.0 mph, 2018 7.4 mph, 2013
Maximum Gust 34.6 mph 17:18 21.6 mph 34.6 mph, 2018 9.2 mph, 2013
Mean Wind Direction SSW
Rainfall 0.8 mm 4.8 mm (13%) 29.3 mm, 2014
Maximum Hourly Rain 0.6 mm 11:22 18.7 mm, 2014
Maximum 10-min Rain 0.2 mm 11:22 7.9 mm, 2014
Maximum Rain Rate 0.7 mm/h 11:04 126 mm/h, 2014
Minimum Dew Point 14.3 °C 00:05 9.5 °C 14.3 °C, 2018 3.0 °C, 2012
Maximum Dew Point 15.8 °C 10:56 13.9 °C 17.1 °C, 2014 8.3 °C, 2012
Mean Dew Point 15.0 °C 11.7 °C 15.6 °C, 2014 5.9 °C, 2012
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 16.7 °C 07:01 12.8 °C 16.7 °C, 2018 8.2 °C, 2017
Day Maximum (09-21) 20.6 °C 14:52 21.1 °C 20.6 °C, 2018 17.3 °C, 2012
Max 10m Temp Rise 0.5 °C 14:32 0.6 °C 0.7 °C, 2013 0.3 °C, 2011
Max 1hr Temp Rise 1.5 °C 14:52 2.4 °C 2.9 °C, 2015 0.8 °C, 2014
Max 1hr Hum Rise 8% 06:45 9% 9%, 2010 1%, 2014
Max 10m Temp Fall 0.5 °C 06:22 0.4 °C 0.6 °C, 2013 0.2 °C, 2014
Max 1hr Temp Fall 1.1 °C 06:52 1.5 °C 2.5 °C, 2013 0.8 °C, 2016
Max 1hr Hum Fall 10% 12:57 12% 13%, 2013 2%, 2014
Max 10m Wind Speed 16.8 mph 23:09 10.0 mph 16.8 mph, 2018 5.5 mph, 2009
Minimum Feels-like 20.4 °C 00:10 13.9 °C 20.4 °C, 2018 7.3 °C, 2012
Maximum Feels-like 24.7 °C 14:52 23.7 °C 24.7 °C, 2018 17.3 °C, 2012
Mean Feels-like 22.5 °C 18.9 °C 22.5 °C, 2018 13.0 °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 3.9 °C (-3.2) 8.5 °C (+0.5) 10.8 °C (+3.7), 2015 3.3 °C (-3.8), 2014
Humidity Range 20% 37% 40%, 2010 4%, 2014
Pressure Range 15 hPa 5 hPa 15 hPa, 2018 2 hPa, 2011
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 0.7 [6%]110 hrs (117%) [47%] 8 [72%], 2015 0 [0%], 2016
Wet Hours 2
[Mean rain rate: 0.4 mm/h]
10 hrs (37%) [2.1%] 2, 2011 0, 2009
Cloud Cover Overcast with periods of Mostly Cloudy
Events None
Comments am Rain spells
Extra Comments
Issues None known
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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