Somerville Weather in December

The climate in Somerville during December can be summarized as cool and a little damp.

December is in the winter in Somerville and is typically the 3rd coldest month of the year. Daytime maximum temperatures average around a cold 5°C (41°F), whilst at night -4°C (25°F) is normal.

On average December is the 5th driest month of the year in Somerville with around 98mm 3.9 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 11 days, although this may vary considerably.

On the flip side this corresponds to an average of 4.8 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 Somerville in December 2024.