Onset, MA has a temperate climate with warm summers and mild winters. The average summer temperature is in the mid-70s Fahrenheit while the winter temperature ranges from the low-30s to mid-40s Fahrenheit. Precipitation is spread relatively evenly throughout the year, with moderate rain, snowfall in the winter months, and occasional thunderstorms in late spring and early summer. In general, Onset enjoys four distinct seasons with plenty of sunshine during each one.
Onset, Massachusetts gets 51 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Onset averages 36 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 204 sunny days per year in Onset. The US average is 205 sunny days.
Onset gets some kind of precipitation, on average, 114 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 81 degrees
Winter Low: the January low is 20
Rain: averages 51 inches of rain a year
Snow: averages 36 inches of snow a year