Daily Report for 17th May 2017

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 12.2 °C (+3.9) 23:55 9.0 °C (+1.7) 12.2 °C (+3.9), 2017 5.7 °C (-2.5), 2010
Maximum Temperature 18.6 °C (+1.9) 14:30 16.8 °C (+1.0) 23.3 °C (+6.6), 2014 11.6 °C (-5.1), 2013
Mean Temperature 15.9 °C (+2.9) 12.7 °C (+1.3) 17.4 °C, 2014 9.7 °C, 2013
Minimum Humidity 78% 00:14 55% 78%, 2017 37%, 2015
Maximum Humidity 89% 08:44 82% 93%, 2010 76%, 2015
Mean Humidity 86% 70% 86%, 2017 54%, 2015
Minimum Pressure 1013 hPa 00:02 1012 hPa 1020 hPa, 2010 1001 hPa, 2013
Maximum Pressure 1024 hPa 01:13 1020 hPa 1028 hPa, 2015 1010 hPa, 2009
Mean Pressure 1019 hPa 1016 hPa 1025 hPa, 2015 1006 hPa, 2013
Mean Wind Speed 2.0 mph (-2.7) 4.6 mph (-0.1) 6.0 mph, 2011 1.2 mph, 2014
Maximum Wind Speed 9.5 mph 14:51 11.8 mph 12.5 mph, 2011 6.4 mph, 2014
Maximum Gust 13.6 mph 14:51 18.3 mph 17.8 mph, 2015 8.7 mph, 2014
Mean Wind Direction WSW
Rainfall 35.6 mm 48.3 mm (173%) 35.6 mm, 2017
Maximum Hourly Rain 6.9 mm 04:39 6.9 mm, 2017
Maximum 10-min Rain 2.0 mm 02:13 2.0 mm, 2017
Maximum Rain Rate 20 mm/h 02:05 33 mm/h, 2009
Minimum Dew Point 10.1 °C 23:55 4.6 °C 10.1 °C, 2017 0.6 °C, 2012
Maximum Dew Point 16.2 °C 14:10 9.4 °C 16.2 °C, 2017 5.5 °C, 2012
Mean Dew Point 13.6 °C 7.1 °C 13.6 °C, 2017 3.2 °C, 2012
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) * 16.0 °C * 05:38 9.4 °C 16.0 °C, 2017 5.7 °C, 2010
Day Maximum (09-21) 18.6 °C 14:30 16.8 °C 23.3 °C, 2014 11.6 °C, 2013
Max 10m Temp Rise 0.5 °C 13:54 0.6 °C 0.7 °C, 2009 0.5 °C, 2012
Max 1hr Temp Rise 1.6 °C 14:06 1.9 °C 3.1 °C, 2009 1.4 °C, 2013
Max 1hr Hum Rise 4% 01:24 9% 10%, 2009 4%, 2017
Max 10m Temp Fall 0.6 °C 16:25 0.5 °C 0.6 °C, 2015 0.4 °C, 2012
Max 1hr Temp Fall 2.2 °C 16:28 1.6 °C 2.5 °C, 2014 1.2 °C, 2009
Max 1hr Hum Fall 4% 14:45 10% 24%, 2009 4%, 2017
Max 10m Wind Speed 6.9 mph 21:34 9.0 mph 10.1 mph, 2015 4.9 mph, 2014
Minimum Feels-like 13.5 °C 23:51 7.7 °C 13.5 °C, 2017 4.4 °C, 2010
Maximum Feels-like 23.3 °C 14:12 17.6 °C 24.9 °C, 2014 11.6 °C, 2013
Mean Feels-like 19.0 °C 12.9 °C 19.0 °C, 2017 9.4 °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 6.4 °C (-2.0) 7.7 °C (-0.8) 12.3 °C (+3.9), 2010 5.5 °C (-2.9), 2013
Humidity Range 11% 27% 51%, 2010 11%, 2017
Pressure Range 11 hPa 8 hPa 14 hPa, 2012 4 hPa, 2011
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 0 [0%]60 hrs (59%) [25%] 10 [70%], 2015 0 [0%], 2017
Wet Hours 14
[Mean rain rate: 2.5 mm/h]
26 hrs (119%) [6.4%] 14, 2017 0, 2010
Cloud Cover Overcast
Events None
Comments Rain, lots
Extra Comments
Issues Rn data from N16
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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Daily Graph of Conditions

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