Daily Report for 4th February 2009

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature -1.6 °C (-4.0) 04:12 -2.8 °C (-5.1) 9.5 °C (+7.2), 2011 -5.1 °C (-7.4), 2012
Maximum Temperature 4.6 °C (-2.6) 13:04 2.7 °C (-4.5) 13.3 °C (+6.1), 2016 1.4 °C (-5.8), 2012
Mean Temperature 1.5 °C (-3.3) -0.1 °C (-4.8) 11.0 °C, 2011 -1.5 °C, 2012
Minimum Humidity 64% 15:42 69% 83%, 2019 47%, 2013
Maximum Humidity 96% 07:38 92% 98%, 2010 85%, 2011
Mean Humidity 80% 81% 93%, 2010 68%, 2013
Minimum Pressure 993 hPa 23:08 996 hPa 1024 hPa, 2012 987 hPa, 2014
Maximum Pressure 998 hPa 02:57 1004 hPa 1039 hPa, 2012 998 hPa, 2009
Mean Pressure 996 hPa 1000 hPa 1032 hPa, 2012 996 hPa, 2009
Mean Wind Speed n/a (-5.1) 0.0 mph (-5.1) 11.8, 2011 1.7, 2017
Maximum Wind Speed n/a 0.0 mph 25.5, 2011 9.4, 2010
Maximum Gust n/a 0.0 mph 35.6, 2011 14.7, 2010
Mean Wind Direction n/a
Rainfall 0.0 mm 10.5 mm (184%) 8.0 mm, 2012
Maximum Hourly Rain n/a 13:03 3.5, 2019
Maximum 10-min Rain n/a 13:03 0.9, 2019
Maximum Rain Rate n/a 13:03 6.6, 2019
Minimum Dew Point -4.1 °C 16:45 -5.8 °C 5.5 °C, 2011 -8.7 °C, 2012
Maximum Dew Point 0.8 °C 11:25 -0.5 °C 9.4 °C, 2016 -0.7 °C, 2012
Mean Dew Point -2.0 °C -2.4 °C 7.0 °C, 2011 -5.3 °C, 2012
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) -1.6 °C -2.2 °C 8.6 °C, 2013 -5.1 °C, 2012
Day Maximum (09-21) 4.6 °C 2.7 °C 13.3 °C, 2016 1.4 °C, 2012
Max 10m Temp Rise 1.1 °C 15:50 0.3 °C 1.1 °C, 2009 0.2 °C, 2010
Max 1hr Temp Rise 2.1 °C 12:57 0.5 °C 2.7 °C, 2012 0.6 °C, 2011
Max 1hr Hum Rise 10% 15:40 2% 10%, 2009 2%, 2010
Max 10m Temp Fall 1.5 °C 15:40 0.4 °C 1.5 °C, 2009 0.1 °C, 2011
Max 1hr Temp Fall 1.9 °C 15:40 0.5 °C 1.9 °C, 2009 0.4 °C, 2011
Max 1hr Hum Fall 13% 12:00 3% 29%, 2013 3%, 2019
Max 10m Wind Speed n/a 0.0 mph 16.2, 2011 6.6, 2010
Minimum Feels-like n/a 0.0 °C 5.3, 2011 -7.4, 2012
Maximum Feels-like n/a 0.0 °C 14, 2016 1.1, 2012
Mean Feels-like n/a 0.0 °C 10.9, 2011 -3.6, 2012
Air-frost Hrs 9 hrs 8 hrs 15 hrs, 2012 0 hrs, 2010
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 6.2 °C (+1.4) 5.4 °C (+0.6) 9.1 °C (+4.3), 2016 2.1 °C (-2.7), 2010
Humidity Range 32% 24% 42%, 2013 12%, 2019
Pressure Range 5 hPa 8 hPa 21 hPa, 2020 2 hPa, 2011
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 6.7 [81%]17 hrs (172%) [52%] 6.7 [81%], 2009 0 [0%], 2019
Wet Hours 0 hrs (0%) [0%] 8, 2019 , 2009
Cloud Cover not available
Events Lying Snow (at 09z): ~6 cm
Air Frost
Comments 6cm Ly. Snow Remains (no more falls)
Extra Comments
Issues None known
Observer Absent? No
Pond Temperature (Heath) 0.0 °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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Daily Graph of Conditions

daygraph daygraph 2 daygraph-wdir

Webcam Summary of Cloud Conditions


Webcam summary not available for this day

Wind rose