Temperature
Mean daily maximum: 18.7 (2.1 above average)
Mean daily minimum: 10.7 (1.9 above average)
Mean temperature: 14.7 (2.0 above average)
Highest daily maximum: 27.1 (13th)
Lowest daily maximum: 12.8 (26th)
Lowest daily minimum: 5.8 (23rd)
Highest daily minimum: 16.3 (7th)
Lowest daily grass minimum: 2.2 (11th)
Number of air frosts: 0
Number of ground frosts: 0
Days with max 25.0-29.9: 2
Days with max 20.0-24.9: 6
Days with max 15.0-19.9: 20
Days with max 10.0-14.9: 2
Frost duration: 0.0 hours
Rainfall
Total fall: 72.0 mm (107% of average)
Wettest day (0900-0900) 16.5 mm (13th)
Rain days (0.2 mm or more): 17
Wet days (1.0 mm or more): 12
Snow
Days with snow or sleet falling: 0
Days more than 50% cover at 0900: 0
Deepest at 0900: 0 cm
Sunshine
Total sunshine: 90.4 hours (102% of average)
Sunniest day: 9.3 hours (18th)
Days with no sun: 3
Other phenomena
Days with thunder heard: 0
Days with hail: 0
Days with fog at 0900: 0
Wind
Mean wind speed: 4.6 mph
Maximum gust: 40 mph (25th)
Days with gale: 0
Remarks
An exceptionally warm month. The mean max, mean min, mean temp, highest max, lowest min and highest min were all the highest for September since I started recording in 2009. Despite the warmth, the rainfall and sunshine amounts were very close to the September average.