Great Falls (zip 22066), Virginia gets 42 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Great Falls (zip 22066) 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 Great Falls (zip 22066). The US average is 205 sunny days.
Great Falls (zip 22066) 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 42 inches of rain a year
Snow: averages 22 inches of snow a year
BESTPLACES COMFORT INDEX
The annual BestPlaces Comfort Index for the 22066 zip code is 7.3 (10=best), which means it is about average compared to other places in Virginia.
8.3 / 5.6
Summer / Winter
September, June and May are the most pleasant months in the 22066 zip code, while January and February are the least comfortable months.