Chelmsford Weather in October

The climate in Chelmsford during October can be summarized as mild and a little damp.

October is in the fall / autumn in Chelmsford and is typically the 6th warmest month of the year. Daytime maximum temperatures average around a cool 17°C (62°F), whilst at night 4°C (39°F) is normal.

On average October is the 5th wettest month of the year in Chelmsford with around 95mm 3.7 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 9 days, although this may vary considerably.

On the flip side this corresponds to an average of 6.9 hours of sunshine per day.

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Chelmsford in October 2025.