Chelsea, MA has a humid continental climate, characterized by cold winters and hot summers. Winters in Chelsea are mostly cloudy with occasional snowstorms and average temperatures ranging between 6 and 30 degrees Celsius. Summer temperatures can get quite hot, with an average high of around 80 degrees Celsius during the hottest months of July and August. Rainfall is spread evenly throughout the year, averaging just over four inches per month. Despite the occasional warm spells during summer, Chelsea remains relatively cool in comparison to other parts of Massachusetts due to its coastal location on Boston Harbor.
Chelsea, Massachusetts gets 48 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Chelsea averages 48 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 202 sunny days per year in Chelsea. The US average is 205 sunny days.
Chelsea gets some kind of precipitation, on average, 127 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 19
Rain: averages 48 inches of rain a year
Snow: averages 48 inches of snow a year