Daily Report for 17th January 2018

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 2.2 °C (-0.2) 03:53 3.9 °C (+1.4) 6.6 °C (+4.2), 2014 -5.5 °C (-7.9), 2013
Maximum Temperature 7.1 °C (+0.1) 14:38 8.0 °C (+1.0) 9.8 °C (+2.8), 2011 2.3 °C (-4.7), 2013
Mean Temperature 4.7 °C (-0.0) 5.9 °C (+1.2) 7.6 °C, 2011 -1.1 °C, 2013
Minimum Humidity 60% 14:42 75% 85%, 2011 49%, 2009
Maximum Humidity 92% 23:56 92% 98%, 2010 84%, 2017
Mean Humidity 73% 84% 93%, 2011 68%, 2009
Minimum Pressure 996 hPa 00:45 1002 hPa 1033 hPa, 2017 987 hPa, 2014
Maximum Pressure 1009 hPa 16:46 1014 hPa 1038 hPa, 2017 993 hPa, 2014
Mean Pressure 1004 hPa 1008 hPa 1036 hPa, 2017 990 hPa, 2014
Mean Wind Speed 10.1 mph (+4.9) 6.7 mph (+1.5) 10.1 mph, 2018 0.5 mph, 2017
Maximum Wind Speed 20.4 mph 12:45 17.2 mph 20.4 mph, 2018 5.8 mph, 2017
Maximum Gust 34.6 mph 12:45 28.3 mph 34.6 mph, 2018 8.4 mph, 2017
Mean Wind Direction WSW
Rainfall 1.0 mm 33.8 mm (112%) 16.1 mm, 2011
Maximum Hourly Rain 0.8 mm 23:56 5.0 mm, 2009
Maximum 10-min Rain 0.4 mm 23:51 1.1 mm, 2011
Maximum Rain Rate 2.4 mm/h 23:56 15 mm/h, 2011
Minimum Dew Point -1.9 °C 02:21 1.2 °C 5.3 °C, 2014 -6.7 °C, 2013
Maximum Dew Point 5.4 °C 23:58 5.9 °C 8.9 °C, 2011 -0.5 °C, 2013
Mean Dew Point 0.3 °C 3.4 °C 6.5 °C, 2011 -3.1 °C, 2013
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 2.2 °C 03:53 4.4 °C 8.6 °C, 2011 -5.5 °C, 2013
Day Maximum (09-21) 7.1 °C 14:38 7.8 °C 9.0 °C, 2009 2.3 °C, 2013
Max 10m Temp Rise 0.3 °C 09:58 0.4 °C 0.6 °C, 2010 0.1 °C, 2011
Max 1hr Temp Rise 1.1 °C 10:17 0.9 °C 2.4 °C, 2013 0.4 °C, 2011
Max 1hr Hum Rise 7% 22:19 5% 7%, 2018 2%, 2016
Max 10m Temp Fall 0.3 °C 02:58 0.4 °C 0.5 °C, 2012 0.1 °C, 2016
Max 1hr Temp Fall 0.8 °C 17:17 1.0 °C 2.0 °C, 2017 0.3 °C, 2016
Max 1hr Hum Fall 5% 02:19 7% 13%, 2017 3%, 2016
Max 10m Wind Speed 16.4 mph 12:53 13.3 mph 16.4 mph, 2018 4.4 mph, 2017
Minimum Feels-like -4.7 °C 01:59 -0.5 °C 2.8 °C, 2011 -5.5 °C, 2013
Maximum Feels-like 4.4 °C 14:05 7.3 °C 10.6 °C, 2011 2.3 °C, 2013
Mean Feels-like 0.1 °C 3.1 °C 6.7 °C, 2011 -1.9 °C, 2013
Air-frost Hrs 0 hrs 0 hrs 12 hrs, 2013 0 hrs, 2010
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 4.9 °C (+0.3) 4.1 °C (-0.4) 8.5 °C (+3.9), 2012 1.9 °C (-2.7), 2014
Humidity Range 32% 17% 39%, 2009 12%, 2011
Pressure Range 13 hPa 12 hPa 19 hPa, 2010 2 hPa, 2012
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 6.4 [85%]26 hrs (105%) [21%] 7 [93%], 2017 0.1 [1%], 2011
Wet Hours 2
[Mean rain rate: 0.5 mm/h]
29 hrs (79%) [7.1%] 8, 2011 , 2009
Cloud Cover am: Sunny
pm: Mostly Sunny
Events None
Comments 22- Rain
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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