Chatham, Massachusetts gets 48 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Chatham averages 23 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 201 sunny days per year in Chatham. The US average is 205 sunny days.
Chatham gets some kind of precipitation, on average, 109 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.
Summer High: the July high is around 78 degrees
Winter Low: the January low is 23
Rain: averages 48 inches of rain a year
Snow: averages 23 inches of snow a year
BESTPLACES COMFORT INDEX
The annual BestPlaces Comfort Index for Chatham is 7.1 (10=best), which means it is one of the most pleasant places in Massachusetts.
7.1 / 10
June, September and August are the most pleasant months in Chatham, while January and February are the least comfortable months.