Charlestown, NH has a humid continental climate with hot summers and cold winters. The average daily high temperature in the summer is around 78°F (26°C) and the average daily low temperature in the winter is around 12°F (-11°C). Rainfall is distributed throughout the year, with an average of just over 28 inches (71 cm) of precipitation annually. Snowfall ranges from 40-60 inches (102-152 cm) per year, depending on the severity of the winter. Winters tend to be long and cold, with frequent snowstorms lasting multiple days at a time. Summers are warm and muggy, with occasional thunderstorms. Overall, Charlestown has four distinct seasons throughout the year that offer something for everyone no matter what time of year they visit.
Charlestown, New Hampshire gets 44 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Charlestown averages 56 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 Charlestown. The US average is 205 sunny days.
Charlestown gets some kind of precipitation, on average, 129 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 82 degrees
Winter Low: the January low is 8
Rain: averages 44 inches of rain a year
Snow: averages 56 inches of snow a year