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 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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