Daily Report for 15th December 2018

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 1.3 °C (-1.9) 05:06 5.1 °C (+1.7) 9.4 °C (+6.2), 2015 -1.0 °C (-4.2), 2010
Maximum Temperature 7.1 °C (-0.8) 23:29 9.9 °C (+1.6) 13.6 °C (+5.7), 2015 2.3 °C (-5.6), 2009
Mean Temperature 3.2 °C (-1.3) 7.7 °C (+1.6) 11.6 °C, 2015 1.5 °C, 2009
Minimum Humidity 65% 00:02 76% 90%, 2013 65%, 2011
Maximum Humidity 94% 21:36 92% 97%, 2010 83%, 2016
Mean Humidity 82% 85% 95%, 2013 75%, 2011
Minimum Pressure 1002 hPa 19:27 1008 hPa 1026 hPa, 2010 984 hPa, 2012
Maximum Pressure 1023 hPa 00:00 1018 hPa 1037 hPa, 2010 997 hPa, 2012
Mean Pressure 1013 hPa 1013 hPa 1032 hPa, 2010 991 hPa, 2012
Mean Wind Speed 8.6 mph (+3.5) 5.9 mph (+0.8) 8.6 mph, 2018 2.2 mph, 2009
Maximum Wind Speed 18.1 mph 11:36 14.8 mph 19.2 mph, 2011 6.9 mph, 2009
Maximum Gust 27.6 mph 12:07 23.9 mph 27.7 mph, 2011 10.7 mph, 2009
Mean Wind Direction SSE
Rainfall 10.2 mm 31.2 mm (115%) 10.2 mm, 2018
Maximum Hourly Rain 3.2 mm 17:28 3.2 mm, 2018
Maximum 10-min Rain 1.0 mm 16:51 1.3 mm, 2013
Maximum Rain Rate 6 mm/h 16:39 24 mm/h, 2015
Minimum Dew Point -3.5 °C 00:02 2.6 °C 7.7 °C, 2015 -3.7 °C, 2010
Maximum Dew Point 6.2 °C 21:57 7.7 °C 12.2 °C, 2015 3.0 °C, 2009
Mean Dew Point 0.3 °C 5.4 °C 10.3 °C, 2013 -0.6 °C, 2009
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 1.3 °C 05:03 6.1 °C 9.4 °C, 2015 -1.0 °C, 2010
Day Maximum (09-21) * 6.4 °C * 20:58 9.8 °C 12.6 °C, 2015 2.3 °C, 2009
Max 10m Temp Rise 0.3 °C 20:07 0.3 °C 0.5 °C, 2009 0.2 °C, 2015
Max 1hr Temp Rise 1.4 °C 20:48 1.1 °C 1.4 °C, 2013 0.5 °C, 2015
Max 1hr Hum Rise 9% 13:43 5% 9%, 2011 2%, 2013
Max 10m Temp Fall 0.2 °C 01:16 0.3 °C 0.5 °C, 2014 0.1 °C, 2015
Max 1hr Temp Fall 0.6 °C 13:37 1.0 °C 1.7 °C, 2014 0.2 °C, 2015
Max 1hr Hum Fall 2% 22:39 6% 7%, 2009 1%, 2015
Max 10m Wind Speed 14.3 mph 13:24 11.2 mph 14.3 mph, 2018 4.9 mph, 2009
Minimum Feels-like -4.9 °C 05:33 1.9 °C 8.7 °C, 2015 -4.9 °C, 2018
Maximum Feels-like 6.1 °C 22:03 10.6 °C 16.0 °C, 2015 3.6 °C, 2009
Mean Feels-like -1.3 °C 6.6 °C 12.9 °C, 2015 -1.3 °C, 2018
Air-frost Hrs 0 hrs 0 hrs 4 hrs, 2010 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 5.8 °C (+1.1) 4.8 °C (-0.1) 5.9 °C (+1.2), 2014 2.3 °C (-2.4), 2009
Humidity Range 29% 17% 29%, 2018 3%, 2015
Pressure Range 21 hPa 10 hPa 21 hPa, 2017 2 hPa, 2009
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 0 [0%]28 hrs (119%) [26%] 5 [71%], 2017 0 [0%], 2010
Wet Hours 7
[Mean rain rate: 1.5 mm/h]
36 hrs (118%) [9.9%] 7, 2018 0, 2009
Cloud Cover Overcast
Events None
Comments Rain
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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