Daily Report for 20th December 2018

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 6.1 °C (+3.1) 07:48 5.2 °C (+1.9) 9.4 °C (+6.4), 2015 -7.2 °C (-10.2), 2010
Maximum Temperature 9.9 °C (+2.4) 13:38 9.8 °C (+1.7) 14.6 °C (+7.1), 2015 0.3 °C (-7.2), 2010
Mean Temperature 8.1 °C (+2.7) 7.8 °C (+1.8) 12.2 °C, 2015 -3.2 °C, 2010
Minimum Humidity 80% 14:50 77% 96%, 2012 62%, 2014
Maximum Humidity 92% 23:53 93% 98%, 2012 80%, 2016
Mean Humidity 85% 86% 98%, 2012 75%, 2014
Minimum Pressure 1003 hPa 23:59 1007 hPa 1034 hPa, 2017 977 hPa, 2019
Maximum Pressure 1008 hPa 14:11 1017 hPa 1036 hPa, 2017 988 hPa, 2019
Mean Pressure 1006 hPa 1012 hPa 1035 hPa, 2017 982 hPa, 2019
Mean Wind Speed 6.0 mph (+0.9) 5.9 mph (+0.8) 8.1 mph, 2015 2.6 mph, 2016
Maximum Wind Speed 15.1 mph 12:52 14.6 mph 20.1 mph, 2013 8.6 mph, 2017
Maximum Gust 20.7 mph 12:25 23.5 mph 30.8 mph, 2013 11.5 mph, 2017
Mean Wind Direction SW
Rainfall 0.0 mm 46.7 mm (129%) 21.7 mm, 2012
Maximum Hourly Rain n/a 4.1, 2012
Maximum 10-min Rain n/a 1.2, 2012
Maximum Rain Rate n/a 9, 2012
Minimum Dew Point 4.6 °C 07:45 3.0 °C 6.5 °C, 2015 -9.3 °C, 2010
Maximum Dew Point 7.9 °C 23:53 7.8 °C 9.7 °C, 2017 -0.4 °C, 2010
Mean Dew Point 5.8 °C 5.5 °C 8.4 °C, 2017 -4.7 °C, 2010
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 6.1 °C 07:49 6.0 °C 12.3 °C, 2015 -7.2 °C, 2010
Day Maximum (09-21) 9.9 °C 13:39 9.7 °C 13.0 °C, 2015 0.3 °C, 2010
Max 10m Temp Rise 0.3 °C 10:48 0.3 °C 0.7 °C, 2009 0.2 °C, 2012
Max 1hr Temp Rise 1.3 °C 11:10 1.1 °C 2.1 °C, 2009 0.5 °C, 2015
Max 1hr Hum Rise 8% 23:28 6% 8%, 2018 1%, 2012
Max 10m Temp Fall 0.2 °C 23:18 0.3 °C 0.5 °C, 2009 0.1 °C, 2017
Max 1hr Temp Fall 0.6 °C 03:42 1.0 °C 1.7 °C, 2015 0.1 °C, 2017
Max 1hr Hum Fall 4% 03:03 6% 9%, 2013 2%, 2012
Max 10m Wind Speed 11.0 mph 13:37 10.9 mph 15.5 mph, 2013 6.2 mph, 2010
Minimum Feels-like 2.3 °C 08:30 2.0 °C 5.7 °C, 2015 -10.2 °C, 2010
Maximum Feels-like 9.4 °C 23:35 10.2 °C 15.5 °C, 2015 0.3 °C, 2010
Mean Feels-like 5.6 °C 6.4 °C 12.5 °C, 2015 -5.0 °C, 2010
Air-frost Hrs 0 hrs 0 hrs 17 hrs, 2010 0 hrs, 2011
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 3.8 °C (-0.7) 4.6 °C (-0.2) 7.9 °C (+3.4), 2013 2.3 °C (-2.2), 2016
Humidity Range 12% 16% 29%, 2011 2%, 2012
Pressure Range 5 hPa 10 hPa 13 hPa, 2012 2 hPa, 2010
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 3 [43%]42 hrs (134%) [29%] 7 [100%], 2009 0 [0%], 2012
Wet Hours 047 hrs (118%) [9.8%] 16, 2012 0, 2013
Cloud Cover am: Sunny transitioned to Partly Cloudy
pm: Overcast
Events None
Comments -
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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