Upper Merion, PA has a humid continental climate with hot and humid summers and cold, snowy winters. The area experiences 4 distinct seasons each year with an average temperature of 53°F in the winter and 79°F in the summer. Precipitation is plentiful throughout the year, with an average of 43 inches per year. Upper Merion also experiences a wide range of temperatures due to its location between two major metropolitan areas.
Upper Merion, Pennsylvania gets 47 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Upper Merion 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 Upper Merion. The US average is 205 sunny days.
Upper Merion 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 21
Rain: averages 47 inches of rain a year
Snow: averages 17 inches of snow a year