Summit, NJ has a humid continental climate with hot and humid summers and cold winters. The summer months of June, July and August have average temperatures ranging from 70 to 85°F, while the winter months from December to February have temperatures that can range between 20 to 40°F. Precipitation is generally moderate throughout the year, with approximately six inches of snowfall during the winter months. During the warmer months, there is often thunderstorm activity in Summit as well.
Summit, New Jersey gets 51 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Summit averages 25 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 208 sunny days per year in Summit. The US average is 205 sunny days.
Summit gets some kind of precipitation, on average, 119 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 85 degrees
Winter Low: the January low is 19
Rain: averages 51 inches of rain a year
Snow: averages 25 inches of snow a year