Folsom, PA experiences all four seasons with hot and humid summers, cold winters, and mild springs and autumns. The average temperature in the summer is around 78°F and in the winter it cools to an average of 34°F. Rainfall is evenly distributed throughout the year with an annual average of 42 inches. Snowfall varies from year to year, but typically ranges between 24-30 inches each season.
Folsom, Pennsylvania gets 43 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Folsom averages 16 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 208 sunny days per year in Folsom. The US average is 205 sunny days.
Folsom gets some kind of precipitation, on average, 114 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 27
Rain: averages 43 inches of rain a year
Snow: averages 16 inches of snow a year