Daily Report for 17th December 2018

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 3.9 °C (+0.8) 08:13 4.9 °C (+1.6) 11.8 °C (+8.7), 2015 -6.0 °C (-9.1), 2010
Maximum Temperature 9.9 °C (+2.2) 23:56 9.9 °C (+1.6) 15.2 °C (+7.5), 2015 -0.8 °C (-8.5), 2010
Mean Temperature 7.1 °C (+1.5) 7.7 °C (+1.6) 13.6 °C, 2015 -3.0 °C, 2010
Minimum Humidity 83% 14:51 77% 92%, 2013 67%, 2015
Maximum Humidity 94% 09:20 93% 98%, 2009 84%, 2016
Mean Humidity 90% 86% 96%, 2013 79%, 2015
Minimum Pressure 1008 hPa 00:01 1008 hPa 1034 hPa, 2016 995 hPa, 2010
Maximum Pressure 1020 hPa 16:41 1018 hPa 1041 hPa, 2016 1002 hPa, 2010
Mean Pressure 1017 hPa 1013 hPa 1038 hPa, 2016 998 hPa, 2010
Mean Wind Speed 5.2 mph (+0.1) 5.7 mph (+0.6) 9.0 mph, 2009 0.7 mph, 2016
Maximum Wind Speed 12.9 mph 22:51 14.4 mph 22.8 mph, 2009 4.6 mph, 2016
Maximum Gust 19.6 mph 01:11 23.3 mph 33.1 mph, 2009 6.3 mph, 2016
Mean Wind Direction SW
Rainfall 0.0 mm 36.8 mm (120%) 6.1 mm, 2013
Maximum Hourly Rain n/a 2.1, 2014
Maximum 10-min Rain n/a 0.7, 2013
Maximum Rain Rate n/a 3.6, 2014
Minimum Dew Point 3.0 °C 07:58 2.7 °C 8.3 °C, 2015 -8.0 °C, 2010
Maximum Dew Point 8.3 °C 23:56 7.7 °C 12.4 °C, 2015 -3.8 °C, 2010
Mean Dew Point 5.6 °C 5.4 °C 10.0 °C, 2015 -5.8 °C, 2010
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 3.9 °C 08:13 5.8 °C 12.7 °C, 2015 -3.3 °C, 2010
Day Maximum (09-21) * 9.1 °C * 14:35 9.7 °C 15.2 °C, 2015 -0.8 °C, 2010
Max 10m Temp Rise 0.4 °C 11:40 0.3 °C 0.6 °C, 2016 0.2 °C, 2010
Max 1hr Temp Rise 1.7 °C 12:06 1.2 °C 1.7 °C, 2018 0.7 °C, 2010
Max 1hr Hum Rise 4% 16:16 5% 12%, 2009 2%, 2013
Max 10m Temp Fall 0.3 °C 02:28 0.3 °C 0.5 °C, 2010 0.1 °C, 2014
Max 1hr Temp Fall 1.1 °C 03:07 1.0 °C 1.6 °C, 2010 0.3 °C, 2014
Max 1hr Hum Fall 4% 12:08 6% 12%, 2017 2%, 2016
Max 10m Wind Speed 8.4 mph 00:54 10.8 mph 15.1 mph, 2009 3.5 mph, 2016
Minimum Feels-like 0.1 °C 07:50 1.8 °C 13.0 °C, 2015 -9.0 °C, 2010
Maximum Feels-like 8.9 °C 15:23 10.4 °C 16.9 °C, 2015 -0.8 °C, 2010
Mean Feels-like 4.7 °C 6.4 °C 14.9 °C, 2015 -5.7 °C, 2010
Air-frost Hrs 0 hrs 0 hrs 24 hrs, 2010 0 hrs, 2011
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 6.0 °C (+1.4) 4.9 °C (+0.0) 9.2 °C (+4.6), 2017 2.4 °C (-2.2), 2016
Humidity Range 11% 16% 26%, 2009 5%, 2016
Pressure Range 11 hPa 10 hPa 11 hPa, 2018 4 hPa, 2009
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 5.5 [78%]37 hrs (138%) [30%] 6 [86%], 2012 0 [0%], 2016
Wet Hours 038 hrs (112%) [9.3%] 8, 2013 0, 2016
Cloud Cover am: Sunny
pm: Sunny transitioned to Hazy
Events None
Comments -
Extra Comments
Issues delayed tip reassigned
Observer Absent? Yes - observations may be unreliable
Pond Temperature (Heath) 0.0 °C
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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