Daily Report for 22nd September 2018

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 10.2 °C (-0.5) 19:43 12.4 °C (+1.0) 13.7 °C (+3.0), 2013 6.0 °C (-4.7), 2012
Maximum Temperature 13.8 °C (-3.9) 10:48 20.7 °C (+1.4) 22.9 °C (+5.2), 2010 13.8 °C (-3.9), 2018
Mean Temperature 11.4 °C (-2.2) 16.4 °C (+1.2) 16.8 °C, 2016 11.1 °C, 2012
Minimum Humidity 77% 00:06 54% 81%, 2013 45%, 2012
Maximum Humidity 95% 23:38 90% 97%, 2017 84%, 2016
Mean Humidity 87% 74% 91%, 2013 67%, 2012
Minimum Pressure 1013 hPa 23:33 1016 hPa 1026 hPa, 2013 998 hPa, 2015
Maximum Pressure 1020 hPa 15:24 1021 hPa 1029 hPa, 2013 1007 hPa, 2015
Mean Pressure 1017 hPa 1019 hPa 1028 hPa, 2013 1002 hPa, 2015
Mean Wind Speed 3.0 mph (-0.9) 5.1 mph (+1.2) 6.0 mph, 2009 1.7 mph, 2014
Maximum Wind Speed 10.0 mph 03:25 14.1 mph 14.7 mph, 2016 7.1 mph, 2014
Maximum Gust 13.8 mph 01:57 22.0 mph 22.6 mph, 2016 8.1 mph, 2014
Mean Wind Direction WSW
Rainfall 8.0 mm 15.0 mm (36%) 8.0 mm, 2018
Maximum Hourly Rain 1.6 mm 18:33 2.4 mm, 2015
Maximum 10-min Rain 0.4 mm 18:27 1.5 mm, 2015
Maximum Rain Rate 5.0 mm/h 18:17 42 mm/h, 2015
Minimum Dew Point 7.6 °C 01:15 9.2 °C 12.8 °C, 2013 1.7 °C, 2012
Maximum Dew Point 11.0 °C 15:24 13.9 °C 16.6 °C, 2013 8.2 °C, 2012
Mean Dew Point 9.2 °C 11.4 °C 15.2 °C, 2013 4.7 °C, 2012
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) * 11.0 °C * 05:04 12.6 °C 16.2 °C, 2013 6.0 °C, 2012
Day Maximum (09-21) 13.8 °C 10:48 20.5 °C 22.9 °C, 2010 13.8 °C, 2018
Max 10m Temp Rise 0.2 °C 06:26 0.6 °C 0.8 °C, 2012 0.2 °C, 2018
Max 1hr Temp Rise 0.7 °C 10:00 2.2 °C 3.6 °C, 2010 0.7 °C, 2018
Max 1hr Hum Rise 6% 02:12 9% 14%, 2016 5%, 2015
Max 10m Temp Fall 0.2 °C 00:28 0.5 °C 0.9 °C, 2015 0.2 °C, 2018
Max 1hr Temp Fall 0.7 °C 01:00 1.6 °C 2.5 °C, 2014 0.7 °C, 2018
Max 1hr Hum Fall 1% 06:14 11% 16%, 2017 1%, 2018
Max 10m Wind Speed 7.8 mph 03:34 10.3 mph 11.4 mph, 2016 4.5 mph, 2014
Minimum Feels-like 11.4 °C 01:53 13.6 °C 16.6 °C, 2013 2.9 °C, 2012
Maximum Feels-like 13.6 °C 23:55 23.2 °C 25.0 °C, 2010 13.6 °C, 2018
Mean Feels-like 12.4 °C 18.4 °C 20.8 °C, 2013 10.5 °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 3.6 °C (-3.4) 8.3 °C (+0.4) 12.1 °C (+5.1), 2010 3.6 °C (-3.4), 2018
Humidity Range 18% 36% 49%, 2010 14%, 2015
Pressure Range 7 hPa 6 hPa 9 hPa, 2015 3 hPa, 2009
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 0 [0%]117 hrs (113%) [46%] 10 [90%], 2012 0 [0%], 2018
Wet Hours 10
[Mean rain rate: 0.8 mm/h]
21 hrs (70%) [4%] 10, 2018 0, 2009
Cloud Cover Overcast
Events None
Comments pm- Rain
Extra Comments
Issues WPC died at ~08. Data from E2
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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