Williamsport, PA has a humid continental climate with cold winters and warm, humid summers. Average temperatures range from 22°F in January to 76°F in July. Snowfall is common in the winter months while rainfall is spread throughout the year with an average of 44 inches annually. Summer temperatures often reach into the 80s and thunderstorms are frequent. Spring and fall can be unpredictable, with temperature fluctuations ranging from mild to cold or hot.
Williamsport, Pennsylvania gets 42 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Williamsport averages 33 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 180 sunny days per year in Williamsport. The US average is 205 sunny days.
Williamsport gets some kind of precipitation, on average, 135 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 85 degrees
Winter Low: the January low is 20
Rain: averages 42 inches of rain a year
Snow: averages 33 inches of snow a year