Daily Report for 5th May 2016

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 6.5 °C (-0.3) 05:16 5.3 °C (-1.3) 11.9 °C (+5.1), 2015 2.5 °C (-4.3), 2010
Maximum Temperature 20.4 °C (+5.1) 15:24 17.6 °C (+2.4) 22.2 °C (+6.9), 2018 9.8 °C (-5.5), 2012
Mean Temperature 14.3 °C (+2.4) 12.1 °C (+0.6) 15.4 °C, 2018 7.2 °C, 2012
Minimum Humidity 28% 15:07 36% 53%, 2010 28%, 2016
Maximum Humidity 67% 07:01 80% 95%, 2015 67%, 2016
Mean Humidity 41% 56% 72%, 2012 41%, 2016
Minimum Pressure 1015 hPa 23:10 1020 hPa 1025 hPa, 2018 988 hPa, 2015
Maximum Pressure 1024 hPa 00:45 1027 hPa 1027 hPa, 2018 1002 hPa, 2015
Mean Pressure 1019 hPa 1023 hPa 1026 hPa, 2018 994 hPa, 2015
Mean Wind Speed 3.0 mph (-1.7) 4.3 mph (-0.4) 11.6 mph, 2015 2.4 mph, 2010
Maximum Wind Speed 9.9 mph 18:00 12.5 mph 25.5 mph, 2015 7.5 mph, 2010
Maximum Gust 16.8 mph 18:48 18.5 mph 42.0 mph, 2015 10.6 mph, 2010
Mean Wind Direction SSE
Rainfall 0.0 mm 0.2 mm (2%) 3.5 mm, 2015
Maximum Hourly Rain n/a 2.9, 2015
Maximum 10-min Rain n/a 0.9, 2015
Maximum Rain Rate n/a 10.8, 2015
Minimum Dew Point -3.7 °C 00:11 -1.2 °C 5.5 °C, 2009 -3.7 °C, 2016
Maximum Dew Point 5.4 °C 08:10 6.6 °C 13.9 °C, 2015 5.4 °C, 2016
Mean Dew Point 0.7 °C 2.6 °C 8.4 °C, 2009 0.7 °C, 2016
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 6.5 °C 05:16 5.5 °C 11.9 °C, 2015 2.5 °C, 2010
Day Maximum (09-21) 20.4 °C 15:24 17.6 °C 22.2 °C, 2018 9.8 °C, 2012
Max 10m Temp Rise 0.9 °C 07:26 0.8 °C 1.3 °C, 2018 0.3 °C, 2012
Max 1hr Temp Rise 4.5 °C 08:12 3.6 °C 4.8 °C, 2018 1.2 °C, 2012
Max 1hr Hum Rise 9% 02:22 8% 16%, 2017 4%, 2011
Max 10m Temp Fall 0.5 °C 18:30 0.6 °C 0.6 °C, 2017 0.3 °C, 2010
Max 1hr Temp Fall 1.9 °C 19:08 2.0 °C 2.5 °C, 2018 1.0 °C, 2012
Max 1hr Hum Fall 15% 08:38 15% 22%, 2018 7%, 2013
Max 10m Wind Speed 7.8 mph 18:01 9.6 mph 18.9 mph, 2015 7.0 mph, 2013
Minimum Feels-like 6.5 °C 04:45 4.3 °C 11.9 °C, 2015 1.0 °C, 2010
Maximum Feels-like 20.4 °C 15:21 17.7 °C 22.8 °C, 2018 9.3 °C, 2012
Mean Feels-like 14.3 °C 12.0 °C 15.4 °C, 2018 4.9 °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 13.9 °C (+5.3) 12.3 °C (+3.7) 15.1 °C (+6.5), 2018 4.1 °C (-4.5), 2015
Humidity Range 39% 44% 56%, 2018 28%, 2013
Pressure Range 9 hPa 7 hPa 14 hPa, 2015 2 hPa, 2018
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 13 [95%]48 hrs (164%) [71%] 13.7 [100%], 2018 0.1 [1%], 2012
Wet Hours 01 hrs (16%) [0.8%] 2, 2012 0, 2010
Cloud Cover am: Sunny
pm: Sunny transitioned to Hazy
Events Maximum possible sunshine
Comments -
Extra Comments
Issues Wind data from Harpenden
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.
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Webcam Summary of Cloud Conditions

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