Hummelstown, PA has a humid continental climate with four distinct seasons. Winters are cold and snowy, with temperatures averaging in the mid-30s. Summers are hot and humid, with temperatures often reaching into the high-80s and low-90s. Spring and autumn tend to be mild but can still experience some extreme weather conditions such as heavy rains or strong winds. Precipitation is abundant throughout the year, but especially during the summer months when thunderstorms are common. Hummelstown experiences an extended growing season due to its location in the southern portion of Pennsylvania, which allows for an abundant harvest of fruits and vegetables all year round.
Hummelstown, Pennsylvania gets 42 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Hummelstown averages 26 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 194 sunny days per year in Hummelstown. The US average is 205 sunny days.
Hummelstown gets some kind of precipitation, on average, 122 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 22
Rain: averages 42 inches of rain a year
Snow: averages 26 inches of snow a year