11901 Riverhead, NY experiences a humid continental climate with warm, humid summers and cold, wet winters. The area averages temperatures of 55°F during the summer months and 37°F in the winter. Rainfall is abundant throughout the year, with an average of 50 inches annually. Due to its location in eastern Long Island, 11901 Riverhead experiences coastal influences from the Atlantic Ocean that provide moderating effects on temperature extremes and precipitation levels.
Riverhead (zip 11901), New York gets 47 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Riverhead (zip 11901) averages 29 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 Riverhead (zip 11901). The US average is 205 sunny days.
Riverhead (zip 11901) 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.
Weather Highlights
Summer High: the July high is around 82 degrees
Winter Low: the January low is 22
Rain: averages 47 inches of rain a year
Snow: averages 29 inches of snow a year