Old Tappan, NJ has a humid continental climate with hot and humid summers and cold winters. Average summer temperatures reach into the mid-80s with occasional heat waves while winter temperatures can dip below 0°F. Precipitation is abundant throughout the year, with over 40 inches of rain and snow annually. The climate in Old Tappan is typically mild, though weather can be unpredictable at times depending on the season.
Old Tappan, New Jersey gets 47 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Old Tappan 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 Old Tappan. The US average is 205 sunny days.
Old Tappan gets some kind of precipitation, on average, 121 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 19
Rain: averages 47 inches of rain a year
Snow: averages 27 inches of snow a year