Nassau County, NY has a humid continental climate, characterized by hot summers and cold winters. Summers are typically warm and sunny with temperatures averaging in the high 80s. Winters are usually cold with snowfall often occurring from December through March. The average annual precipitation is just over 43 inches, making it one of the wettest counties in New York. The county also receives an average of 119 days of sunshine each year. In general, the weather in Nassau County is quite mild compared to many other areas around the country.
Nassau County, New York gets 46 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Nassau County averages 23 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 172 sunny days per year in Nassau County. The US average is 205 sunny days.
Nassau County 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.
Summer High: the July high is around 83 degrees
Winter Low: the January low is 25
Rain: averages 46 inches of rain a year
Snow: averages 23 inches of snow a year