Daily Report for 28th December 2016

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature -1.2 °C (-4.0) 08:48 5.2 °C (+2.0) 9.4 °C (+6.6), 2015 -1.3 °C (-4.1), 2014
Maximum Temperature 3.4 °C (-3.8) 14:33 10.2 °C (+2.4) 13.7 °C (+6.5), 2015 3.4 °C (-3.8), 2016
Mean Temperature 1.1 °C (-3.9) 7.9 °C (+2.2) 11.5 °C, 2015 1.1 °C, 2016
Minimum Humidity 80% 03:15 72% 81%, 2012 60%, 2011
Maximum Humidity 83% 13:36 81% 98%, 2009 83%, 2016
Mean Humidity 82% 77% 93%, 2010 74%, 2011
Minimum Pressure 1041 hPa 20:11 1024 hPa 1041 hPa, 2016 990 hPa, 2013
Maximum Pressure 1045 hPa 03:05 1029 hPa 1045 hPa, 2016 1006 hPa, 2009
Mean Pressure 1043 hPa 1027 hPa 1043 hPa, 2016 997 hPa, 2013
Mean Wind Speed 0.5 mph (-4.6) 3.3 mph (-1.8) 8.2 mph, 2011 0.5 mph, 2016
Maximum Wind Speed 4.7 mph 14:52 9.9 mph 18.1 mph, 2011 4.7 mph, 2016
Maximum Gust 7.3 mph 14:52 14.5 mph 27.9 mph, 2011 7.3 mph, 2016
Mean Wind Direction SE
Rainfall 0.0 mm 10.5 mm (21%) 4.4 mm, 2010
Maximum Hourly Rain n/a 2.2, 2010
Maximum 10-min Rain n/a 0.8, 2010
Maximum Rain Rate n/a 20, 2010
Minimum Dew Point -4.1 °C 03:32 1.5 °C 5.8 °C, 2015 -4.3 °C, 2014
Maximum Dew Point 0.7 °C 14:32 6.5 °C 11.1 °C, 2012 0.7 °C, 2014
Mean Dew Point -1.6 °C 4.1 °C 7.7 °C, 2012 -2.1 °C, 2014
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) -1.2 °C 08:46 5.7 °C 9.4 °C, 2015 -1.2 °C, 2009
Day Maximum (09-21) 3.4 °C 14:33 10.0 °C 13.7 °C, 2015 3.4 °C, 2016
Max 10m Temp Rise 0.4 °C 11:00 0.4 °C 0.5 °C, 2012 0.2 °C, 2010
Max 1hr Temp Rise 1.4 °C 11:36 1.2 °C 1.6 °C, 2014 0.6 °C, 2018
Max 1hr Hum Rise 3% 04:25 3% 6%, 2014 3%, 2011
Max 10m Temp Fall 0.3 °C 07:23 0.3 °C 0.5 °C, 2014 0.2 °C, 2009
Max 1hr Temp Fall 1.2 °C 17:18 1.1 °C 2.4 °C, 2014 0.2 °C, 2018
Max 1hr Hum Fall 1% 01:21 4% 8%, 2014 1%, 2010
Max 10m Wind Speed 3.5 mph 14:56 7.5 mph 12.4 mph, 2012 3.5 mph, 2016
Minimum Feels-like -1.4 °C 10:36 3.1 °C 7.3 °C, 2015 -6.2 °C, 2017
Maximum Feels-like 3.6 °C 16:18 10.5 °C 13.9 °C, 2015 2.8 °C, 2017
Mean Feels-like 0.8 °C 7.4 °C 11.7 °C, 2015 -2.2 °C, 2017
Air-frost Hrs 6 hrs 0.4 hrs 6 hrs, 2016 0 hrs, 2010
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 4.6 °C (+0.2) 5.0 °C (+0.4) 8.2 °C (+3.8), 2012 3.6 °C (-0.8), 2018
Humidity Range 3% 10% 32%, 2014 3%, 2016
Pressure Range 4 hPa 6 hPa 23 hPa, 2014 4 hPa, 2016
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 1 [14%]51 hrs (118%) [26%] 7.2 [103%], 2017 0 [0%], 2010
Wet Hours 016 hrs (29%) [2.4%] 6, 2012 0, 2009
Cloud Cover Overcast with periods of Sunny
Events Dense Fog
Air Frost
Comments -13 Dense fog
Extra Comments Cleaned the radiation shield; fog tip removed
Issues None known
Observer Absent? No
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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Webcam Summary of Cloud Conditions

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