Cornwall, CT has a humid continental climate with cool to cold winters and warm to hot summers. During the winter months, temperatures can drop below freezing, while in the summer they can reach up to the mid-80's. Precipitation is abundant throughout the year, with an average annual rainfall of 44 inches. The area is known for its wet spring and fall seasons, with snowfall common in winter months. The town experiences all four seasons, but does not typically have extreme weather conditions like tornadoes or hurricanes.
Cornwall, Connecticut gets 51 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Cornwall averages 62 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 198 sunny days per year in Cornwall. The US average is 205 sunny days.
Cornwall gets some kind of precipitation, on average, 132 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 79 degrees
Winter Low: the January low is 13
Rain: averages 51 inches of rain a year
Snow: averages 62 inches of snow a year