Cos Cob, CT enjoys a temperate climate with moderate temperatures that rarely dip below freezing in the winter. Summer temperatures can get warm, but are often offset by cooling ocean breezes coming from Long Island Sound. Precipitation is fairly common year-round, and the area sees an average of around 44 inches of rain annually. Snowfall can vary from season to season, and average snowfall amounts usually range from 10 to 25 inches per year. Overall, Cos Cob has a mild climate year-round with cool summers and fairly mild winters.
Cos Cob, Connecticut gets 51 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Cos Cob averages 30 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 175 sunny days per year in Cos Cob. The US average is 205 sunny days.
Cos Cob gets some kind of precipitation, on average, 124 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 84 degrees
Winter Low: the January low is 21
Rain: averages 51 inches of rain a year
Snow: averages 30 inches of snow a year