Climate in Loudoun County, Virginia

Loudoun County, Virginia gets 42 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Loudoun County averages 21 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 Loudoun County. The US average is 205 sunny days.

Loudoun County 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 87 degrees
Winter Low: the January low is 23
Rain: averages 42 inches of rain a year
Snow: averages 21 inches of snow a year

BESTPLACES COMFORT INDEX

The annual BestPlaces Comfort Index for Loudoun County is 7.3 (10=best), which means it is about average compared to other places in Virginia.

July is the hottest month for Loudoun County with an average high temperature of 86.7°, which ranks it as about average compared to other places in Virginia. In Loudoun County, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Loudoun County are September, May and June.

January has the coldest nighttime temperatures for Loudoun County with an average of 22.5°. This is colder than most places in Virginia.

In Loudoun County, there are 22.6 days annually when the high temperature is over 90°, which is about average compared to other places in Virginia.

In Loudoun County, there are 111.7 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Virginia.

In Loudoun County, there are 0.8 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Virginia.

May is the wettest month in Loudoun County with 4.5 inches of rain, and the driest month is February with 2.7 inches. The wettest season is Summer with 27% of yearly precipitation and 20% occurs in Spring, which is the driest season. The annual rainfall of 42.2 inches in Loudoun County means that it is drier than most places in Virginia.

May is the rainiest month in Loudoun County with 11.9 days of rain, and October is the driest month with only 8.0 rainy days. There are 116.1 rainy days annually in Loudoun County, which is about average compared to other places in Virginia. The rainiest season is Summer when it rains 28% of the time and the driest is Winter with only a 22% chance of a rainy day.

An annual snowfall of 20.8 inches in Loudoun County means that it is snowier than most places in Virginia. January is the snowiest month in Loudoun County with 7.4 inches of snow, and 5 months of the year have significant snowfall.

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