Chatham, NH has a moderate climate with warm summers and cold winters. The average temperature in summer is in the mid-70s Fahrenheit, while winter temperatures often dip below freezing. The area receives an average of 34 inches of precipitation per year, most of which falls between April and October. In addition to rain, snowfall can be substantial during the winter months. Although there are occasional storms that cause flooding, the area is generally quite dry throughout the rest of the year.
Chatham, New Hampshire gets 49 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Chatham averages 76 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 199 sunny days per year in Chatham. The US average is 205 sunny days.
Chatham gets some kind of precipitation, on average, 132 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.
Weather Highlights
Summer High: the July high is around 80 degrees
Winter Low: the January low is 6
Rain: averages 49 inches of rain a year
Snow: averages 76 inches of snow a year