Averages and extremes
Essex is the driest county in the UK. The driest spot of all is St Osyth, with a mere 507mm per annum on average. Whilst Epping's average is quite a bit more at 679mm, this is still drier than most places in the UK.
Here are the monthly averages based on the Woodberry Down station over 1979-2013:
The wettest year on record was 2000 with 974mm, and the driest was 1983 with 457mm.
The wettest month was October 2000 with 162mm, and the driest was May 1989 with just 1.3mm.
The wettest day on record was 29th July 1987 with a biblical 59.0mm, or more than 2.3 inches.
Epping is in the warmest region of the UK in summer, and one of the coolest for its altitude in winter.
The average daily maximum varies from 6.6°C in January to 22.6°C in July, whilst the average daily minimum is from 1.8°C in January to 12.9°C in both July and August.
The graph below shows how these temperatures vary through the year, and also shows the hottest and coldest temperature in the month averaged over the data period (1979-2013).
The hottest temperature on record was 37.9°C on 10th August 2003. (Sadly there was no weather station operational in Epping when the UK's highest ever temperature of 38.7°C was recorded in Cambridge on 25th July 2019.)
The coldest temperature recorded was -10.0°C on each of 1st January 1979 and 12th,13th,14th January 1987 (at that time temperature was recorded to half a degree rather than the tenth recorded latterly).
Photo: The Green in a snowy January 2010