Daily Report for 18th April 2017

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 4.3 °C (-0.6) 02:33 6.7 °C (+1.9) 8.2 °C (+3.3), 2013 3.5 °C (-1.4), 2010
Maximum Temperature 12.9 °C (+0.1) 16:21 16.1 °C (+3.9) 19.5 °C (+6.7), 2010 11.4 °C (-1.4), 2012
Mean Temperature 8.4 °C (-0.3) 11.4 °C (+2.9) 12.6 °C, 2011 8.2 °C, 2012
Minimum Humidity 35% 16:19 47% 68%, 2012 33%, 2011
Maximum Humidity 74% 03:58 77% 97%, 2009 70%, 2013
Mean Humidity 54% 61% 81%, 2012 54%, 2017
Minimum Pressure 1025 hPa 01:15 1018 hPa 1026 hPa, 2015 977 hPa, 2012
Maximum Pressure 1032 hPa 22:37 1024 hPa 1032 hPa, 2017 992 hPa, 2012
Mean Pressure 1029 hPa 1022 hPa 1029 hPa, 2017 984 hPa, 2012
Mean Wind Speed 4.6 mph (-0.3) 4.0 mph (-0.9) 10.6 mph, 2013 2.2 mph, 2010
Maximum Wind Speed 13.4 mph 11:47 11.5 mph 20.8 mph, 2013 7.1 mph, 2010
Maximum Gust 18.9 mph 11:51 16.6 mph 30.1 mph, 2013 10.0 mph, 2010
Mean Wind Direction NNE
Rainfall 0.0 mm 0.4 mm (1%) 3.4 mm, 2012
Maximum Hourly Rain n/a 1.2, 2012
Maximum 10-min Rain n/a 0.6, 2012
Maximum Rain Rate n/a 5, 2012
Minimum Dew Point -2.7 °C 17:39 0.8 °C 2.3 °C, 2012 -2.7 °C, 2017
Maximum Dew Point 1.3 °C 04:01 6.8 °C 9.1 °C, 2011 1.3 °C, 2017
Mean Dew Point -0.8 °C 3.8 °C 5.3 °C, 2009 -0.8 °C, 2017
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 4.3 °C 02:33 6.8 °C 9.1 °C, 2013 3.5 °C, 2010
Day Maximum (09-21) 12.9 °C 16:21 16.1 °C 19.5 °C, 2010 11.4 °C, 2012
Max 10m Temp Rise 0.5 °C 11:03 0.6 °C 1.2 °C, 2009 0.5 °C, 2014
Max 1hr Temp Rise 1.6 °C 12:15 2.3 °C 3.4 °C, 2011 1.6 °C, 2012
Max 1hr Hum Rise 8% 19:18 7% 24%, 2013 4%, 2016
Max 10m Temp Fall 0.5 °C 18:25 0.5 °C 2.5 °C, 2013 0.4 °C, 2015
Max 1hr Temp Fall 1.4 °C 01:02 1.6 °C 4.3 °C, 2013 1.4 °C, 2012
Max 1hr Hum Fall 8% 06:40 9% 14%, 2014 8%, 2017
Max 10m Wind Speed 9.4 mph 11:48 8.7 mph 14.9 mph, 2013 8.0 mph, 2016
Minimum Feels-like 0.9 °C 04:52 4.7 °C 5.1 °C, 2011 0.6 °C, 2015
Maximum Feels-like 12.9 °C 16:19 16.2 °C 19.5 °C, 2010 11.7 °C, 2012
Mean Feels-like 7.3 °C 11.1 °C 12.5 °C, 2011 6.3 °C, 2012
Air-frost Hrs 0 hrs 0 hrs 0 hrs, 2009 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 8.6 °C (+0.7) 9.5 °C (+2.0) 16.0 °C (+8.1), 2010 5.4 °C (-2.5), 2012
Humidity Range 39% 31% 53%, 2011 21%, 2012
Pressure Range 7 hPa 6 hPa 15 hPa, 2012 3 hPa, 2015
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 11 [87%]123 hrs (153%) [56%] 12.6 [100%], 2010 1 [8%], 2012
Wet Hours 01 hrs (4%) [0.2%] 4, 2012 0, 2009
Cloud Cover Mostly Sunny
Events None
Comments -
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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Daily Graph of Conditions

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Webcam Summary of Cloud Conditions

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