Daily Report for 9th January 2017

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 4.5 °C (+2.1) 23:56 2.4 °C (-0.1) 8.4 °C (+6.0), 2015 -4.2 °C (-6.6), 2010
Maximum Temperature 10.5 °C (+3.5) 11:41 7.9 °C (+0.9) 14.8 °C (+7.8), 2015 0.6 °C (-6.4), 2010
Mean Temperature 8.6 °C (+2.8) 5.3 °C (+0.4) 11.9 °C, 2015 -1.9 °C, 2010
Minimum Humidity 78% 11:43 72% 80%, 2016 64%, 2014
Maximum Humidity 84% 02:02 83% 98%, 2013 84%, 2017
Mean Humidity 82% 79% 91%, 2013 78%, 2014
Minimum Pressure 1010 hPa 20:35 1023 hPa 1028 hPa, 2012 982 hPa, 2016
Maximum Pressure 1030 hPa 00:12 1031 hPa 1033 hPa, 2012 997 hPa, 2016
Mean Pressure 1019 hPa 1027 hPa 1030 hPa, 2012 989 hPa, 2016
Mean Wind Speed 6.4 mph (+1.2) 3.6 mph (-1.6) 11.1 mph, 2015 2.3 mph, 2013
Maximum Wind Speed 13.5 mph 15:27 9.9 mph 28.4 mph, 2015 9.0 mph, 2013
Maximum Gust 18.9 mph 09:26 15.0 mph 38.9 mph, 2016 11.4 mph, 2013
Mean Wind Direction WSW
Rainfall 5.0 mm 18.4 mm (115%) 5.0 mm, 2017
Maximum Hourly Rain 2.3 mm 18:15 2.4 mm, 2016
Maximum 10-min Rain 1.3 mm 17:54 1.3 mm, 2017
Maximum Rain Rate 36 mm/h 17:50 36 mm/h, 2017
Minimum Dew Point 1.7 °C 23:56 -0.8 °C 6.1 °C, 2012 -5.4 °C, 2010
Maximum Dew Point 7.2 °C 14:19 4.6 °C 13.2 °C, 2015 -2.3 °C, 2010
Mean Dew Point 5.8 °C 2.0 °C 8.9 °C, 2015 -4.1 °C, 2010
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) * 8.8 °C * 05:50 3.6 °C 9.2 °C, 2014 -4.2 °C, 2010
Day Maximum (09-21) 10.5 °C 11:41 7.9 °C 14.8 °C, 2015 0.6 °C, 2010
Max 10m Temp Rise 0.2 °C 10:17 0.3 °C 0.8 °C, 2010 0.2 °C, 2012
Max 1hr Temp Rise 0.6 °C 11:14 1.1 °C 1.4 °C, 2011 0.5 °C, 2013
Max 1hr Hum Rise 3% 13:00 3% 13%, 2015 3%, 2012
Max 10m Temp Fall 0.6 °C 17:59 0.5 °C 1.2 °C, 2016 0.2 °C, 2012
Max 1hr Temp Fall 1.9 °C 18:48 1.5 °C 2.8 °C, 2016 0.5 °C, 2012
Max 1hr Hum Fall 5% 11:26 5% 15%, 2014 5%, 2017
Max 10m Wind Speed 10.8 mph 15:33 7.7 mph 20.4 mph, 2015 7.4 mph, 2013
Minimum Feels-like -0.2 °C 23:54 -0.8 °C 5.8 °C, 2012 -9.8 °C, 2010
Maximum Feels-like 10.5 °C 11:35 7.6 °C 17.4 °C, 2015 -3.3 °C, 2010
Mean Feels-like 6.4 °C 3.6 °C 12.2 °C, 2015 -6.7 °C, 2010
Air-frost Hrs 0 hrs 2 hrs 22 hrs, 2010 0 hrs, 2011
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 6.0 °C (+1.4) 5.5 °C (+1.0) 8.4 °C (+3.8), 2013 3.6 °C (-1.0), 2009
Humidity Range 6% 10% 32%, 2014 6%, 2017
Pressure Range 20 hPa 7 hPa 20 hPa, 2017 2 hPa, 2009
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 0.1 [1%]17 hrs (136%) [27%] 7.3 [101%], 2011 0.1 [1%], 2017
Wet Hours 8
[Mean rain rate: 0.6 mm/h]
31 hrs (157%) [14%] 8, 2017 , 2009
Cloud Cover am: Mostly Cloudy
pm: Overcast
Events None
Comments 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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