Fairfax County, Virginia gets 43 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Fairfax County averages 19 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 199 sunny days per year in Fairfax County. The US average is 205 sunny days.
Fairfax County gets some kind of precipitation, on average, 118 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.
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 19 inches of snow a year
BESTPLACES COMFORT INDEX
The annual BestPlaces Comfort Index for Fairfax County is 7.3 (10=best), which means it is about average compared to other places in Virginia.
7.3 / 10
September, May and June are the most pleasant months in Fairfax County, while January and February are the least comfortable months.