Potomac, MD has a humid subtropical climate. Summers in Potomac are hot and humid, with temperatures usually reaching into the high 80s and sometimes even the 90s Fahrenheit. Winters are usually mild with temperatures rarely dropping below freezing. Precipitation is spread out throughout the year, with some months receiving more rain than others. Snowfall is generally light and doesn’t accumulate very often. Overall, Potomac has a pleasant climate that encourages outdoor activities like hiking, biking and boating in the summer months and skiing and snowshoeing in the winter.
Potomac, Maryland gets 42 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Potomac averages 17 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 201 sunny days per year in Potomac. The US average is 205 sunny days.
Potomac 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 86 degrees
Winter Low: the January low is 25
Rain: averages 42 inches of rain a year
Snow: averages 17 inches of snow a year