Chantilly, VA Climate

Chantilly, VA has a humid subtropical climate with hot and humid summers and cool winters. The average summer high temperatures range from the mid to upper 80s while winter temperatures can reach as low as the high 20s. Rainfall is generally moderate year round, with an average of 40 inches per year. Snowfall is rare, but there are some light snowfalls each year. The area generally enjoys mild weather throughout the year, which make it an ideal place to live for those wishing for seasonal changes without extreme temperatures.

Chantilly, Virginia gets 43 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Chantilly 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 Chantilly. The US average is 205 sunny days.

Chantilly gets some kind of precipitation, on average, 120 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

Bestplaces Comfort Index

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

8.3 Summer - 5.6 Winter

September, June and May are the most pleasant months in Chantilly, while January and February are the least comfortable months.

Climate	Chantilly, Virginia	United States
	42.9 in.	38.1 in.
	21.5 in.	27.8 in.
	119.5 days	106.2 days
	197 days	205 days
	85.8°	85.8°
	23.5°	21.7°
	7.3	7
	4	4.3
	325 ft.	2443 ft.

Climate

YOU SHOULD KNOW

Many people confuse weather and climate but they are different. Weather is the conditions of the atmosphere over a short period of time, and climate is how the atmosphere is over long periods of time.

Weather is how the atmosphere is behaving and its effects upon life and human activities. Weather can change from minute-to-minute. Most people think of weather in terms of temperature, humidity, precipitation, cloudiness, brightness, visibility, wind, and atmospheric pressure.

Climate is the description of the long-term pattern of weather in a place. Climate can mean the average weather for a particular region and time period taken over 30 years. Climate is the average of weather over time.

July is the hottest month for Chantilly with an average high temperature of 85.8°, which ranks it as cooler than most places in Virginia. In Chantilly, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Chantilly are September, June and May.

In Chantilly, there are 19.0 days annually when the high temperature is over 90°, which is cooler than most places in Virginia.

January has the coldest nighttime temperatures for Chantilly with an average of 23.5°. This is colder than most places in Virginia.

In Chantilly, there are 103.9 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Virginia.

In Chantilly, there are 0.6 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Virginia.

The humidity is usually acceptable in Chantilly but some summer months can be sticky or muggy. July is the most humid month, though humidity is low for most of the year. July, August and June are the three most uncomfortably humid months in Chantilly.

May is the wettest month in Chantilly with 4.6 inches of rain, and the driest month is February with 2.8 inches. The wettest season is Summer with 28% of yearly precipitation and 21% occurs in Spring, which is the driest season. The annual rainfall of 42.9 inches in Chantilly means that it is drier than most places in Virginia.

May is the rainiest month in Chantilly with 12.2 days of rain, and October is the driest month with only 8.1 rainy days. There are 119.5 rainy days annually in Chantilly, which is rainier than most 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 21.5 inches in Chantilly means that it is one of the snowiest places in Virginia. February is the snowiest month in Chantilly with 7.8 inches of snow, and 5 months of the year have significant snowfall.

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Beth · Chantilly, VA

wanting to spread out a little

Over 17 years ago

I have grown up in the Northern Va. area. It is a great place to make a lot of money and live a very busy life. We would now like to move to an area where we can More

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Joy · Chantilly, VA

Traffic

Over 18 years ago

The traffic in this area is More

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Jennifer · Chantilly, VA

4 Seasons

Over 18 years ago

If you enjoy all 4 seasons, then Chantilly, VA is a great place to More

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