Daily Report for 31st December 2018

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 8.6 °C (+5.9) 08:01 5.3 °C (+2.1) 10.6 °C (+7.9), 2011 0.4 °C (-2.3), 2014
Maximum Temperature 9.8 °C (+2.7) 00:35 9.9 °C (+2.1) 12.9 °C (+5.8), 2017 3.4 °C (-3.7), 2009
Mean Temperature 9.2 °C (+4.3) 7.8 °C (+2.1) 11.7 °C, 2011 2.5 °C, 2009
Minimum Humidity 80% 14:52 79% 88%, 2010 62%, 2015
Maximum Humidity 90% 08:09 93% 98%, 2009 83%, 2016
Mean Humidity 84% 87% 95%, 2010 74%, 2015
Minimum Pressure 1035 hPa 23:59 1013 hPa 1035 hPa, 2018 992 hPa, 2017
Maximum Pressure 1038 hPa 09:46 1022 hPa 1038 hPa, 2018 999 hPa, 2017
Mean Pressure 1036 hPa 1017 hPa 1036 hPa, 2018 994 hPa, 2017
Mean Wind Speed 3.2 mph (-1.9) 4.9 mph (-0.2) 10.1 mph, 2017 1.5 mph, 2010
Maximum Wind Speed 9.4 mph 16:10 13.4 mph 22.0 mph, 2017 6.4 mph, 2010
Maximum Gust 15.0 mph 16:38 21.3 mph 34.6 mph, 2017 8.1 mph, 2010
Mean Wind Direction WNW
Rainfall 0.0 mm 55.8 mm (100%) 5.8 mm, 2017
Maximum Hourly Rain n/a 4.6, 2017
Maximum 10-min Rain n/a 3, 2017
Maximum Rain Rate n/a 42, 2015
Minimum Dew Point 5.3 °C 23:37 3.3 °C 9.8 °C, 2011 -1.6 °C, 2009
Maximum Dew Point 7.7 °C 00:10 8.0 °C 11.4 °C, 2017 2.5 °C, 2009
Mean Dew Point 6.6 °C 5.8 °C 10.3 °C, 2011 1.3 °C, 2009
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 8.6 °C 08:01 6.0 °C 10.1 °C, 2012 0.4 °C, 2014
Day Maximum (09-21) * 9.6 °C * 14:22 9.8 °C 12.5 °C, 2011 3.4 °C, 2009
Max 10m Temp Rise 0.2 °C 13:18 0.3 °C 0.4 °C, 2014 0.1 °C, 2009
Max 1hr Temp Rise 0.4 °C 10:52 1.1 °C 1.9 °C, 2014 0.3 °C, 2009
Max 1hr Hum Rise 1% 01:22 5% 10%, 2015 1%, 2010
Max 10m Temp Fall 0.2 °C 15:36 0.4 °C 1.0 °C, 2013 0.1 °C, 2010
Max 1hr Temp Fall 0.3 °C 05:00 1.1 °C 2.3 °C, 2013 0.3 °C, 2010
Max 1hr Hum Fall 4% 09:56 6% 9%, 2015 1%, 2016
Max 10m Wind Speed 7.0 mph 23:21 10.0 mph 16.0 mph, 2017 5.0 mph, 2010
Minimum Feels-like 5.5 °C 23:13 2.5 °C 11.7 °C, 2011 -4.1 °C, 2009
Maximum Feels-like 10.1 °C 00:02 10.4 °C 14.7 °C, 2017 3.2 °C, 2009
Mean Feels-like 7.9 °C 6.7 °C 13.1 °C, 2011 -0.9 °C, 2009
Air-frost Hrs 0 hrs 0.0 hrs 0 hrs, 2009 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 1.2 °C (-3.1) 4.7 °C (-0.0) 6.6 °C (+2.3), 2014 1.2 °C (-3.1), 2018
Humidity Range 10% 15% 26%, 2015 3%, 2016
Pressure Range 3 hPa 9 hPa 16 hPa, 2012 3 hPa, 2018
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 0 [0%]56 hrs (116%) [25%] 6 [85%], 2015 0 [0%], 2010
Wet Hours 063 hrs (102%) [8.5%] 7, 2012 0, 2010
Cloud Cover 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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