Reston, VA has a moderate climate, with mild winters and warm summers. The average high temperature in the summer months is around 86°F, while the average low temperature in the winter months is around 32°F. Rainfall is quite common throughout the year, averaging at least 3 inches per month from April to November. Snowfall is also possible during the winter months but doesn't usually accumulate much beyond 1-2 inches on a single day. Humidity levels tend to be higher during the warmer months of the year, while temperatures are typically cooler in the evening hours.
Reston (zip 20190), Virginia gets 43 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Reston (zip 20190) 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 20190). The US average is 205 sunny days.
Reston (zip 20190) 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