Daily Report for 4th January 2018

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 5.9 °C (+3.4) 23:59 5.5 °C (+2.9) 8.2 °C (+5.7), 2013 -4.2 °C (-6.7), 2010
Maximum Temperature 12.2 °C (+5.2) 13:07 10.8 °C (+3.8) 12.2 °C (+5.2), 2018 0.6 °C (-6.4), 2009
Mean Temperature 8.1 °C (+4.3) 7.7 °C (+3.4) 9.6 °C, 2013 -2.4 °C, 2010
Minimum Humidity 69% 13:44 71% 96%, 2015 51%, 2009
Maximum Humidity 98% 09:45 92% 98%, 2015 72%, 2009
Mean Humidity 84% 82% 97%, 2015 62%, 2009
Minimum Pressure 990 hPa 13:01 991 hPa 1036 hPa, 2013 982 hPa, 2016
Maximum Pressure 1001 hPa 00:15 1006 hPa 1038 hPa, 2013 984 hPa, 2016
Mean Pressure 994 hPa 999 hPa 1037 hPa, 2013 982 hPa, 2016
Mean Wind Speed 8.1 mph (+2.9) 8.7 mph (+3.5) 9.3 mph, 2012 2.4 mph, 2010
Maximum Wind Speed 28.6 mph 13:04 24.1 mph 28.6 mph, 2018 6.2 mph, 2010
Maximum Gust 42.6 mph 13:40 41.6 mph 42.6 mph, 2018 8.1 mph, 2010
Mean Wind Direction SW
Rainfall 9.4 mm 23.2 mm (327%) 9.4 mm, 2018
Maximum Hourly Rain 2.8 mm 07:16 2.8 mm, 2018
Maximum 10-min Rain 0.8 mm 07:09 0.8 mm, 2018
Maximum Rain Rate 6 mm/h 07:05 6 mm/h, 2018
Minimum Dew Point 3.1 °C 18:21 2.5 °C 5.8 °C, 2013 -5.4 °C, 2010
Maximum Dew Point 9.8 °C 11:08 8.8 °C 9.8 °C, 2018 -1.1 °C, 2010
Mean Dew Point 5.4 °C 4.7 °C 7.2 °C, 2013 -4.0 °C, 2010
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) * 6.5 °C * 05:34 5.7 °C 9.3 °C, 2013 -4.2 °C, 2010
Day Maximum (09-21) 12.2 °C 13:07 10.1 °C 12.2 °C, 2018 0.6 °C, 2009
Max 10m Temp Rise 0.7 °C 09:30 0.4 °C 0.7 °C, 2010 0.1 °C, 2013
Max 1hr Temp Rise 1.9 °C 10:07 1.3 °C 2.2 °C, 2010 0.4 °C, 2013
Max 1hr Hum Rise 7% 04:35 8% 7%, 2012 1%, 2015
Max 10m Temp Fall 0.4 °C 13:49 0.8 °C 0.8 °C, 2017 0.2 °C, 2011
Max 1hr Temp Fall 1.3 °C 14:22 1.5 °C 1.8 °C, 2017 0.5 °C, 2012
Max 1hr Hum Fall 14% 12:27 12% 14%, 2018 1%, 2015
Max 10m Wind Speed 20.9 mph 13:42 18.9 mph 20.9 mph, 2018 4.3 mph, 2010
Minimum Feels-like 2.4 °C 19:26 1.0 °C 5.0 °C, 2013 -7.7 °C, 2010
Maximum Feels-like 12.7 °C 12:09 11.5 °C 12.7 °C, 2018 1.3 °C, 2010
Mean Feels-like 6.0 °C 4.9 °C 8.3 °C, 2013 -3.5 °C, 2010
Air-frost Hrs 0 hrs 0 hrs 20 hrs, 2010 0 hrs, 2011
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 6.3 °C (+1.8) 5.3 °C (+0.8) 6.3 °C (+1.8), 2018 2.4 °C (-2.1), 2011
Humidity Range 29% 22% 29%, 2018 2%, 2015
Pressure Range 11 hPa 15 hPa 18 hPa, 2012 2 hPa, 2013
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 0.2 [3%]1.1 hrs (20%) [3.9%] 7 [98%], 2010 0 [0%], 2014
Wet Hours 7
[Mean rain rate: 1.3 mm/h]
14 hrs (162%) [15%] 8, 2014 , 2009
Cloud Cover am: Overcast transitioned to Mostly Cloudy
pm: Mostly Cloudy
Events None
Comments 04-10 & late 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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