Reston, VA has a humid subtropical climate with hot and humid summers and cold winters. Average temperatures in the summer months range from 70 to 88 degrees Fahrenheit, while winter temperatures stay between 28 and 48 degrees Fahrenheit. The area experiences a significant amount of precipitation annually, with an average of 45 inches throughout the year. Most of this precipitation is received during the warmer months as thunderstorms and showers. Reston is also prone to occasional snowstorms during winter months, although they are usually light and short-lived.
Reston (zip 20194), Virginia gets 43 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Reston (zip 20194) averages 22 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 Reston (zip 20194). The US average is 205 sunny days.
Reston (zip 20194) gets some kind of precipitation, on average, 116 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 24
Rain: averages 43 inches of rain a year
Snow: averages 22 inches of snow a year