September was an unusual month. I cannot remember when the mean temperatures and total rainfall were almost identical to the long-term averages. The mean maximum was identical at 18.7°C and the mean minimum just 0.2°C below. The total rainfall was 63.0mm compared with the long-term average of 63.6mm. The first 12 days often brought days with glorious sunshine, light breezes and above average maxima with a maximum of 22.6°C on the 10th. With winds veering into a more northerly direction in the middle of the month there were some very cool nights with a minimum of 2.6°C in the early hours of the 18th. The wettest day was the 22nd with 16.9mm. The latter part of September brought depressed maxima combined with windy and wet days.
The weather station of Marlborough, Wiltshire
