Rockville, MD is known for its varied climate throughout the year, with moderately warm summers and cold winters. Average temperatures in the summer months range from highs of 82 to 88 degrees Fahrenheit and lows of 58 to 67 degrees Fahrenheit. In the winter months, average temperatures range from highs of 42 to 50 degrees Fahrenheit and lows of 22 to 32 degrees Fahrenheit. The city sees an average annual rainfall of 40 inches and an average snowfall of 17 inches each year.
Rockville, Maryland gets 42 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Rockville averages 18 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 203 sunny days per year in Rockville. The US average is 205 sunny days.
Rockville gets some kind of precipitation, on average, 112 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 18 inches of snow a year