Daily Report for 30th April 2009

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 7.9 °C (+1.9) 02:20 6.6 °C (+1.5) 10.9 °C (+4.9), 2011 2.4 °C (-3.6), 2016
Maximum Temperature 17.7 °C (+3.2) 16:32 16.1 °C (+3.2) 20.4 °C (+5.9), 2014 8.7 °C (-5.8), 2018
Mean Temperature 12.9 °C (+2.5) 10.8 °C (+2.4) 15.1 °C, 2011 6.4 °C, 2018
Minimum Humidity 55% 16:46 55% 62%, 2018 36%, 2013
Maximum Humidity 79% 09:59 90% 97%, 2014 71%, 2017
Mean Humidity 70% 74% 83%, 2020 52%, 2017
Minimum Pressure 1014 hPa 01:39 1010 hPa 1022 hPa, 2019 993 hPa, 2020
Maximum Pressure 1020 hPa 23:41 1016 hPa 1027 hPa, 2019 998 hPa, 2020
Mean Pressure 1017 hPa 1013 hPa 1025 hPa, 2019 996 hPa, 2020
Mean Wind Speed n/a (-4.9) 0.0 mph (-4.9) 7.9, 2018 2, 2019
Maximum Wind Speed n/a 0.0 mph 18.1, 2011 8.6, 2019
Maximum Gust n/a 0.0 mph 30, 2020 11.5, 2019
Mean Wind Direction n/a
Rainfall trace 33.1 mm (68%) 9.5, 2020
Maximum Hourly Rain n/a 4.6, 2020
Maximum 10-min Rain n/a 1.5, 2020
Maximum Rain Rate n/a 30, 2010
Minimum Dew Point 3.2 °C 00:01 3.1 °C 5.9 °C, 2010 -3.1 °C, 2016
Maximum Dew Point 10.5 °C 11:46 9.1 °C 12.5 °C, 2014 2.9 °C, 2013
Mean Dew Point 7.4 °C 6.0 °C 8.0 °C, 2010 -0.9 °C, 2016
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 7.9 °C 6.8 °C 10.9 °C, 2011 2.4 °C, 2016
Day Maximum (09-21) 17.7 °C 16.1 °C 20.4 °C, 2014 8.7 °C, 2018
Max 10m Temp Rise 0.6 °C 08:55 0.6 °C 0.8 °C, 2013 0.4 °C, 2011
Max 1hr Temp Rise 1.9 °C 09:01 1.7 °C 3.5 °C, 2013 0.9 °C, 2018
Max 1hr Hum Rise 5% 01:02 5% 17%, 2020 5%, 2009
Max 10m Temp Fall 0.9 °C 23:30 0.4 °C 1.2 °C, 2020 0.3 °C, 2018
Max 1hr Temp Fall 1.6 °C 23:51 1.2 °C 4.1 °C, 2020 0.9 °C, 2018
Max 1hr Hum Fall 7% 14:45 7% 20%, 2014 6%, 2017
Max 10m Wind Speed n/a 0.0 mph 14.1, 2020 6.7, 2019
Minimum Feels-like n/a 0.0 °C 11.3, 2011 -1.2, 2018
Maximum Feels-like n/a 0.0 °C 20.4, 2014 8, 2018
Mean Feels-like n/a 0.0 °C 15.4, 2011 2.8, 2018
Air-frost Hrs 0 hrs 0 hrs 0 hrs, 2009 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 9.8 °C (+1.2) 9.5 °C (+1.7) 13.6 °C (+5.0), 2014 4.0 °C (-4.5), 2018
Humidity Range 24% 36% 60%, 2014 24%, 2009
Pressure Range 6 hPa 6 hPa 13 hPa, 2016 3 hPa, 2010
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 2.5 [19%]181 hrs (132%) [48%] 13.4 [100%], 2011 0 [0%], 2018
Wet Hours 0.541 hrs (89%) [5.7%] 12, 2018 0, 2011
Cloud Cover not available
Events None
Comments Slight 9-11 Showers
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

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Wind rose