Glassboro, NJ has a humid subtropical climate characterized by hot summers and cold winters. July is usually the hottest month of the year with temperatures reaching up to 86°F (30°C), while January is typically the coldest month with temperatures dropping to as low as 27°F (-3°C). Annual precipitation in Glassboro averages around 45 inches (114 cm) and occurs throughout the year, primarily from thunderstorms during the summer months. Snowfall is moderate with an average of 18 inches (45 cm) each winter season.
Glassboro, New Jersey gets 46 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Glassboro averages 17 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 Glassboro. The US average is 205 sunny days.
Glassboro 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.
Weather Highlights
Summer High: the July high is around 87 degrees
Winter Low: the January low is 24
Rain: averages 46 inches of rain a year
Snow: averages 17 inches of snow a year