Daily Report for 20th January 2018

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 1.6 °C (-0.7) 23:20 3.6 °C (+1.2) 4.4 °C (+2.1), 2012 -3.6 °C (-5.9), 2015
Maximum Temperature 4.3 °C (-2.7) 07:34 7.9 °C (+0.9) 9.8 °C (+2.8), 2012 -0.3 °C (-7.3), 2013
Mean Temperature 3.0 °C (-1.7) 5.7 °C (+1.0) 7.6 °C, 2012 -1.0 °C, 2013
Minimum Humidity 85% 00:21 74% 87%, 2010 45%, 2017
Maximum Humidity 95% 15:02 92% 98%, 2013 76%, 2017
Mean Humidity 92% 84% 94%, 2014 67%, 2017
Minimum Pressure 998 hPa 14:16 1002 hPa 1035 hPa, 2011 983 hPa, 2009
Maximum Pressure 1011 hPa 23:45 1013 hPa 1038 hPa, 2011 996 hPa, 2009
Mean Pressure 1003 hPa 1007 hPa 1036 hPa, 2011 990 hPa, 2009
Mean Wind Speed 3.6 mph (-1.6) 6.7 mph (+1.5) 7.0 mph, 2012 0.4 mph, 2014
Maximum Wind Speed 9.3 mph 00:48 17.5 mph 16.1 mph, 2015 4.0 mph, 2016
Maximum Gust 12.7 mph 01:03 28.2 mph 22.3 mph, 2012 4.9 mph, 2016
Mean Wind Direction NNW
Rainfall 4.8 mm 39.8 mm (112%) 8.0 mm, 2013
Maximum Hourly Rain 2.0 mm 14:32 2.0 mm, 2018
Maximum 10-min Rain 0.8 mm 14:02 0.8 mm, 2018
Maximum Rain Rate 6 mm/h 13:57 6 mm/h, 2018
Minimum Dew Point 0.2 °C 00:38 1.0 °C 0.8 °C, 2011 -5.4 °C, 2016
Maximum Dew Point 3.1 °C 13:50 5.7 °C 6.6 °C, 2014 -1.9 °C, 2017
Mean Dew Point 1.8 °C 3.1 °C 3.6 °C, 2012 -3.3 °C, 2017
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) * 2.5 °C * 00:59 4.2 °C 4.4 °C, 2012 -3.6 °C, 2015
Day Maximum (09-21) * 3.9 °C * 09:04 7.6 °C 9.8 °C, 2012 -0.3 °C, 2013
Max 10m Temp Rise 0.3 °C 07:04 0.4 °C 0.7 °C, 2014 0.1 °C, 2010
Max 1hr Temp Rise 0.7 °C 07:20 1.0 °C 2.6 °C, 2014 0.1 °C, 2010
Max 1hr Hum Rise 4% 09:25 5% 8%, 2017 1%, 2010
Max 10m Temp Fall 0.3 °C 21:10 0.4 °C 0.5 °C, 2014 0.1 °C, 2010
Max 1hr Temp Fall 0.7 °C 16:52 1.0 °C 1.8 °C, 2014 0.3 °C, 2010
Max 1hr Hum Fall 4% 07:28 7% 10%, 2017 2%, 2013
Max 10m Wind Speed 6.6 mph 18:23 13.4 mph 11.1 mph, 2012 3.0 mph, 2016
Minimum Feels-like -3.0 °C 23:05 -0.8 °C 0.3 °C, 2014 -8.4 °C, 2013
Maximum Feels-like 4.3 °C 07:40 7.2 °C 9.4 °C, 2012 -0.5 °C, 2013
Mean Feels-like 0.7 °C 2.8 °C 5.1 °C, 2012 -4.4 °C, 2013
Air-frost Hrs 0 hrs 0 hrs 24 hrs, 2013 0 hrs, 2010
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 2.7 °C (-2.0) 4.3 °C (-0.3) 7.8 °C (+3.1), 2015 1.4 °C (-3.3), 2010
Humidity Range 10% 18% 31%, 2017 8%, 2010
Pressure Range 13 hPa 11 hPa 13 hPa, 2009 3 hPa, 2011
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 0 [0%]36 hrs (124%) [24%] 7.7 [101%], 2017 0 [0%], 2010
Wet Hours 6
[Mean rain rate: 0.8 mm/h]
37 hrs (86%) [7.7%] 13, 2013 , 2009
Cloud Cover Overcast
Events None
Comments day Rain spells
Extra Comments
Issues None known
Observer Absent? Yes - observations may be unreliable
Notes
Times of extremes are computed using the midpoint time of the extremum (if the value persisted for >1 minute).
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; their reliablity is questionable and they are provided for interest only.
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Daily Graph of Conditions

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