Daily Report for 21st December 2016

<<Previous Day
Reset
Next Day>>
Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 5.1 °C (+2.1) 00:07 5.6 °C (+2.3) 9.8 °C (+6.8), 2017 -2.9 °C (-5.9), 2009
Maximum Temperature 12.1 °C (+4.7) 14:23 10.5 °C (+2.4) 12.9 °C (+5.5), 2015 1.4 °C (-6.0), 2010
Mean Temperature 9.6 °C (+3.4) 8.3 °C (+2.3) 11.1 °C, 2018 -0.5 °C, 2009
Minimum Humidity 73% 15:25 73% 93%, 2010 72%, 2018
Maximum Humidity 83% 03:55 81% 98%, 2009 83%, 2016
Mean Humidity 79% 78% 96%, 2010 79%, 2016
Minimum Pressure 1017 hPa 04:54 1022 hPa 1035 hPa, 2017 984 hPa, 2009
Maximum Pressure 1023 hPa 21:40 1027 hPa 1036 hPa, 2017 997 hPa, 2009
Mean Pressure 1019 hPa 1025 hPa 1035 hPa, 2017 990 hPa, 2009
Mean Wind Speed 5.4 mph (+0.3) 2.8 mph (-2.3) 11.9 mph, 2013 2.0 mph, 2009
Maximum Wind Speed 13.7 mph 06:28 8.8 mph 23.3 mph, 2018 8.1 mph, 2009
Maximum Gust 19.9 mph 05:13 13.0 mph 39.2 mph, 2018 10.2 mph, 2009
Mean Wind Direction SW
Rainfall 0.2 mm 8.5 mm (22%) 8.6 mm, 2018
Maximum Hourly Rain 0.2 mm 4.0 mm, 2018
Maximum 10-min Rain 0.2 mm 1.2 mm, 2013
Maximum Rain Rate n/a 54, 2013
Minimum Dew Point 0.8 °C 00:07 1.8 °C 8.3 °C, 2017 -4.4 °C, 2009
Maximum Dew Point 8.6 °C 13:59 6.6 °C 11.4 °C, 2018 0.8 °C, 2010
Mean Dew Point 6.2 °C 4.6 °C 9.6 °C, 2017 -1.5 °C, 2009
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) * 4.9 °C * 21:37 6.1 °C 10.1 °C, 2017 -2.9 °C, 2009
Day Maximum (09-21) 12.1 °C 14:23 10.4 °C 12.9 °C, 2015 1.4 °C, 2010
Max 10m Temp Rise 0.2 °C 04:30 0.4 °C 1.3 °C, 2009 0.1 °C, 2010
Max 1hr Temp Rise 0.9 °C 01:59 1.2 °C 1.9 °C, 2009 0.4 °C, 2017
Max 1hr Hum Rise 4% 01:59 3% 10%, 2013 2%, 2010
Max 10m Temp Fall 0.2 °C 16:18 0.3 °C 1.3 °C, 2009 0.1 °C, 2010
Max 1hr Temp Fall 0.7 °C 16:43 1.0 °C 1.7 °C, 2013 0.3 °C, 2010
Max 1hr Hum Fall 6% 14:48 4% 12%, 2013 2%, 2010
Max 10m Wind Speed 10.6 mph 06:35 6.6 mph 18.8 mph, 2018 5.4 mph, 2009
Minimum Feels-like 0.6 °C 00:06 3.7 °C 7.3 °C, 2017 -5.7 °C, 2009
Maximum Feels-like 12.8 °C 14:23 10.8 °C 14.8 °C, 2015 1.4 °C, 2010
Mean Feels-like 8.6 °C 7.9 °C 11.7 °C, 2017 -1.2 °C, 2010
Air-frost Hrs 0 hrs 0.2 hrs 13 hrs, 2009 0 hrs, 2010
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 7.0 °C (+2.6) 4.9 °C (+0.1) 7.0 °C (+2.6), 2014 1.1 °C (-3.3), 2010
Humidity Range 10% 8% 23%, 2018 4%, 2010
Pressure Range 6 hPa 5 hPa 13 hPa, 2009 1 hPa, 2017
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 0 [0%]36 hrs (112%) [24%] 2.5 [36%], 2012 0 [0%], 2009
Wet Hours 112 hrs (29%) [2.4%] 12, 2013 0, 2012
Cloud Cover Overcast
Events None
Comments o.night 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.
View monthly summary

Daily Graph of Conditions

day graph

Webcam Summary of Cloud Conditions

daycamsumLarge resolution version