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Weather in Chantilly, VA · National Weather Service + NOAA

Weather in Chantilly

Chantilly has chilly winters and warm summers. A typical July afternoon reaches 87°, a January night drops to 26°, and about 21 inches of snow falls in a normal winter. In November, a normal day reaches 56° and a normal night drops to 36°.

Winter 45°/27°Spring 65°/44°Summer 85°/65°Fall 68°/47°
Right now
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Sunrise 6:38 am · sunset 5:08 pm

Getting the latest forecast from the National Weather Service…

A normal year

Where today sits in Chantilly’s year

Typical highs and lows month by month, from 30 years of NOAA records.

Full climate →
Winter
45° / 27°
5 days with an inch or more of snow
Spring
65° / 44°
Last frost around Apr 15
Summer
85° / 65°
33 days reach 90° in a normal year
Fall now
68° / 47°
First frost around Oct 24
Pastthe usual first frost (Oct 24). Last frost next spring: Apr 15
Best months to be outside
AprMayJunSepOct
Highs of 62–84° and lows of 40° or more
How much snow does Chantilly get?About 21 inches a winter.When is it wettest?May, with 4.3 inches.Is it warmer than it used to be?+1.7° vs. the 20th century.

Weather talk

Road reports, first frosts and storm memories from neighbors in Chantilly.

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Forecast, conditions and alerts: National Weather Service. Climate: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000. Temperatures and rainfall come from NOAA’s gridded normals for Chantilly itself (about a 3-mile square). Snow, frost dates and day counts: the NOAA station at Washington Dc Dulles Airport, VA (4 mi). Sunrise and sunset are calculated from the town’s position. Normals are 30-year averages, not a forecast.