Williamstown, New Jersey gets 46 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Williamstown averages 19 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 207 sunny days per year in Williamstown. The US average is 205 sunny days.
Williamstown gets some kind of precipitation, on average, 116 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 87 degrees
Winter Low: the January low is 23
Rain: averages 46 inches of rain a year
Snow: averages 19 inches of snow a year
BESTPLACES COMFORT INDEX
The annual BestPlaces Comfort Index for Williamstown is 7.2 (10=best), which means it is about average compared to other places in New Jersey.
7.2 / 10
September, June and May are the most pleasant months in Williamstown, while January and February are the least comfortable months.