The climate in Suffolk County, NY is a typical New England mix of warm summers and cold winters. During the summer months, temperatures usually range from the mid-60s to low 80s with high humidity and occasional showers. Winters can be quite cold and wet, with temperatures in the low 30s and occasional snowstorms. The area enjoys four distinct seasons with mild springs and colorful autumns. Rainfall averages 72 inches per year throughout the county, while average monthly temperature highs are above 50 degrees for all but two months out of the year—December and January.
Suffolk County, New York gets 47 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Suffolk County averages 27 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 206 sunny days per year in Suffolk County. The US average is 205 sunny days.
Suffolk County gets some kind of precipitation, on average, 113 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.
Summer High: the July high is around 82 degrees
Winter Low: the January low is 23
Rain: averages 47 inches of rain a year
Snow: averages 27 inches of snow a year
BESTPLACES COMFORT INDEX
The annual BestPlaces Comfort Index for Suffolk County is 7.2 (10=best), which means it is more comfortable than most places in New York.
9 / 5.4
Summer / Winter
June, September and August are the most pleasant months in Suffolk County, while January and February are the least comfortable months.