The climate in 19539 Mertztown, PA is generally mild with temperatures rarely exceeding 80 degrees Fahrenheit in the summer and rarely dropping below freezing during the winter. Rainfall averages around 40 inches per year throughout the region, although it can vary slightly from year to year. Snowfall is relatively light compared with other areas of the country, averaging at around 20 inches per year. Winters tend to be cold and damp while summers are hot and humid. As a result, thunderstorms are common during the warmer months of the year as well as late spring.
Mertztown (zip 19539), Pennsylvania gets 47 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Mertztown (zip 19539) averages 21 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 204 sunny days per year in Mertztown (zip 19539). The US average is 205 sunny days.
Mertztown (zip 19539) gets some kind of precipitation, on average, 103 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 84 degrees
Winter Low: the January low is 19
Rain: averages 47 inches of rain a year
Snow: averages 21 inches of snow a year