Duncannon, PA has a humid continental climate with four distinct seasons. Summers are typically warm and humid while winters are cold and snowy. Spring brings mild temperatures and occasional rain showers, and autumn is cool and crisp. The area receives an average of 42 inches of precipitation per year, mostly in the form of rain in the spring and summer months, with some snowfall in the winter. Average high temperatures range from a low of 28°F in January to a high of 85°F in July, while average lows range from 14°F in January to 63°F in July.
Duncannon, Pennsylvania gets 44 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Duncannon averages 30 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 199 sunny days per year in Duncannon. The US average is 205 sunny days.
Duncannon 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 84 degrees
Winter Low: the January low is 21
Rain: averages 44 inches of rain a year
Snow: averages 30 inches of snow a year