Daily Report for 18th May 2019

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 8.3 °C (-0.1) 04:50 6.2 °C (-1.2) 11.4 °C (+3.0), 2011 3.9 °C (-4.5), 2018
Maximum Temperature 18.7 °C (+1.9) 16:18 15.7 °C (-0.2) 24.5 °C (+7.7), 2014 14.6 °C (-2.2), 2016
Mean Temperature 12.4 °C (+0.9) 11.0 °C (-0.7) 18.7 °C, 2014 11.7 °C, 2013
Minimum Humidity 55% 16:21 50% 71%, 2016 33%, 2014
Maximum Humidity 95% 06:32 90% 95%, 2019 75%, 2013
Mean Humidity 82% 72% 82%, 2019 56%, 2014
Minimum Pressure 1006 hPa 04:53 1015 hPa 1027 hPa, 2010 1002 hPa, 2012
Maximum Pressure 1010 hPa 23:32 1023 hPa 1030 hPa, 2010 1009 hPa, 2012
Mean Pressure 1007 hPa 1018 hPa 1028 hPa, 2010 1005 hPa, 2016
Mean Wind Speed 0.4 mph (-4.3) 3.3 mph (-1.4) 8.3 mph, 2015 0.4 mph, 2019
Maximum Wind Speed 5.8 mph 13:06 11.9 mph 21.0 mph, 2015 5.8 mph, 2019
Maximum Gust 9.2 mph 16:20 18.8 mph 39.8 mph, 2015 9.2 mph, 2019
Mean Wind Direction NE
Rainfall 2.2 mm 24.6 mm (83%) 15.0 mm, 2017
Maximum Hourly Rain 2.2 mm 17:48 3.2 mm, 2016
Maximum 10-min Rain 1.0 mm 17:39 2.0 mm, 2016
Maximum Rain Rate 12 mm/h 17:31 30 mm/h, 2016
Minimum Dew Point 7.0 °C 04:32 2.6 °C 8.3 °C, 2011 0.2 °C, 2015
Maximum Dew Point 11.7 °C 17:39 8.1 °C 13.6 °C, 2014 6.4 °C, 2013
Mean Dew Point 9.3 °C 5.7 °C 11.4 °C, 2011 4.9 °C, 2018
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 8.3 °C 04:52 6.3 °C 13.1 °C, 2011 3.9 °C, 2018
Day Maximum (09-21) 18.7 °C 16:19 15.7 °C 24.5 °C, 2014 14.6 °C, 2016
Max 10m Temp Rise 0.8 °C 12:18 0.8 °C 0.8 °C, 2012 0.4 °C, 2011
Max 1hr Temp Rise 2.0 °C 12:24 2.6 °C 4.0 °C, 2014 1.2 °C, 2011
Max 1hr Hum Rise 21% 17:46 14% 21%, 2019 5%, 2013
Max 10m Temp Fall 0.7 °C 17:16 0.8 °C 0.7 °C, 2015 0.3 °C, 2013
Max 1hr Temp Fall 3.1 °C 18:00 2.2 °C 3.1 °C, 2019 0.9 °C, 2012
Max 1hr Hum Fall 11% 12:31 14% 22%, 2015 7%, 2016
Max 10m Wind Speed 3.4 mph 15:13 8.6 mph 18.0 mph, 2015 3.4 mph, 2019
Minimum Feels-like 8.4 °C 04:42 4.0 °C 12.1 °C, 2014 2.6 °C, 2018
Maximum Feels-like 20.2 °C 16:14 16.1 °C 25.1 °C, 2014 15.2 °C, 2013
Mean Feels-like 13.4 °C 10.7 °C 19.7 °C, 2014 11.4 °C, 2013
Air-frost Hrs 0 hrs 0 hrs 0 hrs, 2009 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 10.4 °C (+2.0) 9.5 °C (+1.0) 14.2 °C (+5.8), 2018 3.4 °C (-5.0), 2016
Humidity Range 40% 40% 58%, 2014 15%, 2016
Pressure Range 3 hPa 8 hPa 15 hPa, 2015 3 hPa, 2018
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 0 [0%]38 hrs (35%) [15%] 13.5 [95%], 2014 0 [0%], 2019
Wet Hours 2
[Mean rain rate: 1.1 mm/h]
28 hrs (121%) [6.5%] 9, 2017 0, 2010
Cloud Cover unknown
Events None
Comments blr
Extra Comments
Issues None known
Observer Absent? No
Pond Temperature (Heath) 14.0 °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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