Merrimac, MA has a humid continental climate with warm, humid summers and cold, snowy winters. Temperatures in the summer generally range from the mid-50s to near 80 degrees Fahrenheit while winter temperatures can get as low as -10 degrees Fahrenheit or lower. Average snowfall is between 40-50 inches per year and average rainfall is around 44 inches annually. The area often experiences short, but intense thunderstorms during the late spring and early summer months.
Merrimac, Massachusetts gets 50 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Merrimac averages 57 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 Merrimac. The US average is 205 sunny days.
Merrimac gets some kind of precipitation, on average, 130 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 15
Rain: averages 50 inches of rain a year
Snow: averages 57 inches of snow a year