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 1041 hPa, 2019 982 hPa, 2016
Maximum Pressure 1001 hPa 00:15 1006 hPa 1044 hPa, 2019 984 hPa, 2016
Mean Pressure 994 hPa 999 hPa 1042 hPa, 2019 982 hPa, 2016
Mean Wind Speed 8.1 mph (+2.9) 8.7 mph (+3.5) 9.3 mph, 2012 1.8 mph, 2019
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 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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