Bethesda, MD has a humid subtropical climate with moderate temperatures throughout the year. Summers are hot and humid, with average high temperatures in the upper 80s and plenty of sunny days. Winters are generally mild, with average low temperatures in the 30s and 40s. The area experiences some snowfall but not enough to cause major disruptions to daily life. Precipitation is fairly evenly distributed throughout the year, with occasional thunderstorms during the summer months. Overall, Bethesda offers a pleasant climate for those who live there.
Bethesda (zip 20817), Maryland gets 43 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Bethesda (zip 20817) averages 18 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 202 sunny days per year in Bethesda (zip 20817). The US average is 205 sunny days.
Bethesda (zip 20817) 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 87 degrees
Winter Low: the January low is 25
Rain: averages 43 inches of rain a year
Snow: averages 18 inches of snow a year