The climate in 20854 Potomac, MD is typically mild with temperatures ranging from the mid-50s in the winter to mid-80s in the summer. Summers can be hot and humid, with occasional thunderstorms in the afternoon. Winters are cold but usually dry with only occasional snowfall. The area typically sees around 50 inches of rain per year, spread throughout all four seasons. Spring brings beautiful blooms while fall brings vibrant colors to the landscape. All in all, Potomac offers a pleasant and mild climate for its residents year-round.
Potomac (zip 20854), Maryland gets 42 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Potomac (zip 20854) averages 17 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 197 sunny days per year in Potomac (zip 20854). The US average is 205 sunny days.
Potomac (zip 20854) 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 85 degrees
Winter Low: the January low is 25
Rain: averages 42 inches of rain a year
Snow: averages 17 inches of snow a year