Raritan borough is located in central New Jersey and has a humid continental climate. The summers are warm to hot and humid, with July being the hottest month with an average high of 85 degrees Fahrenheit (29 degrees Celsius). Winters are cold with January normally being the coldest month, when temperatures can dip into the low 20s Fahrenheit (-6 degrees Celsius). The area receives an average of 40 inches (102 cm) of precipitation every year, which is spread throughout all four seasons. Snowfall can be significant in winter, especially during late December to mid-March.
Raritan, New Jersey gets 47 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Raritan averages 23 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 205 sunny days per year in Raritan. The US average is 205 sunny days.
Raritan gets some kind of precipitation, on average, 117 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 86 degrees
Winter Low: the January low is 20
Rain: averages 47 inches of rain a year
Snow: averages 23 inches of snow a year