Waltham, MA has a humid continental climate, characterized by hot and humid summers and cold winters. Average summer temperatures can reach up to 81°F (27°C) and average winter temperatures can sometimes dip down to 11°F (-11°C). The city generally experiences an average of 47 inches of rainfall each year and receives about 13-15 inches of snow during the winter months. Winters are usually cold and dry, while summers are often warm with occasional thunderstorms in July and August.
Waltham, Massachusetts gets 48 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Waltham averages 50 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 197 sunny days per year in Waltham. The US average is 205 sunny days.
Waltham gets some kind of precipitation, on average, 131 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 83 degrees
Winter Low: the January low is 17
Rain: averages 48 inches of rain a year
Snow: averages 50 inches of snow a year