Chantilly, VA Weather

Chantilly, VA climate is warm during summer when temperatures tend to be in the 70's and very cold during winter when temperatures tend to be in the 30's.

The warmest month of the year is July with an average maximum temperature of 87.40 degrees Fahrenheit, while the coldest month of the year is January with an average minimum temperature of 21.90 degrees Fahrenheit.

Temperature variations between night and day tend to be moderate during summer with a difference that can reach 23 degrees Fahrenheit, and moderate during winter with an average difference of 20 degrees Fahrenheit.

The annual average precipitation at Chantilly is 41.80 Inches. Rainfall in is fairly evenly distributed throughout the year. The wettest month of the year is May with an average rainfall of 4.22 Inches.

Weather Data

Current Conditions

(Updated: 9:52 PM EST TUE NOV 24 2009)

Fog, 51°F	Humidity: 92%	Dewpoint: 49°F
	Wind Speed: CALM	Heat Index: 51°F
	Barometer: 30.13 in.	Wind Chill: 51°F

Moon, Sunrise and Sunset

	Moon Phase: Waxing Gibbous Moon	Civil Twilight: 6:32 AM EST	Sunrise: 7:01 AM EST
		Sunset: 4:50 PM EST	Civil Twilight: 5:19 PM EST

Normal Climate

Normal Temperatures

(WASHINGTON DULLES INTL Weather station, 3.60 miles from Chantilly)

Month	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Annual
Max °F	41.4	45.5	55.0	65.9	74.6	82.8	87.4	85.9	78.9	67.7	56.5	45.9	65.6
Mean °F	31.7	34.8	43.4	53.1	62.3	70.9	75.7	74.4	67.3	55.0	45.2	36.0	54.2
Min °F	21.9	24.1	31.8	40.2	49.9	59.0	64.0	62.8	55.6	42.3	33.8	26.0	42.6

Normal Precipitation