National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

Overcast

42°F

6°C

Humidity 68%
Wind Speed S 14 mph
Barometer 29.48 in (998.3 mb)
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Wind Chill35°F (2°C)
Last update 10 Dec 5:52 pm EST
Extended Forecast for

Chantilly VA

  • Tonight

    Tonight: Partly cloudy, with a low around 30. Southwest wind 9 to 13 mph becoming northwest after midnight. Winds could gust as high as 26 mph.

    Low: 30 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 36. Northwest wind 14 to 16 mph, with gusts as high as 30 mph.

    High: 36 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Increasing clouds, with a low around 26. West wind 5 to 8 mph.

    Low: 26 °F

    Increasing
    Clouds

  • Friday

    Friday: A chance of snow, mainly after 1pm. Mostly cloudy, with a high near 37. Southwest wind 3 to 6 mph. Chance of precipitation is 30%.

    High: 37 °F

    Chance Snow

  • Friday Night

    Friday Night: A chance of snow before 1am. Mostly cloudy, with a low around 26. Light south wind. Chance of precipitation is 30%.

    Low: 26 °F

    Chance Snow

  • Saturday

    Saturday: Partly sunny, with a high near 42.

    High: 42 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A chance of snow after 1am. Mostly cloudy, with a low around 24. Chance of precipitation is 50%.

    Low: 24 °F

    Mostly Cloudy
    then Chance
    Snow

  • Sunday

    Sunday: Mostly sunny, with a high near 31.

    High: 31 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 19.

    Low: 19 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 30. Southwest wind 9 to 13 mph becoming northwest after midnight. Winds could gust as high as 26 mph.
Thursday
Mostly sunny, with a high near 36. Northwest wind 14 to 16 mph, with gusts as high as 30 mph.
Thursday Night
Increasing clouds, with a low around 26. West wind 5 to 8 mph.
Friday
A chance of snow, mainly after 1pm. Mostly cloudy, with a high near 37. Southwest wind 3 to 6 mph. Chance of precipitation is 30%.
Friday Night
A chance of snow before 1am. Mostly cloudy, with a low around 26. Light south wind. Chance of precipitation is 30%.
Saturday
Partly sunny, with a high near 42.
Saturday Night
A chance of snow after 1am. Mostly cloudy, with a low around 24. Chance of precipitation is 50%.
Sunday
Mostly sunny, with a high near 31.
Sunday Night
Partly cloudy, with a low around 19.
Monday
Sunny, with a high near 33.
Monday Night
Partly cloudy, with a low around 19.
Tuesday
Mostly sunny, with a high near 39.
Tuesday Night
Partly cloudy, with a low around 25.
Wednesday
Partly sunny, with a high near 43.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Chantilly VA
 38.88°N 77.4°W (Elev. 358 ft)
Last Update:
3:53 pm EST Dec 10, 2025
Forecast Valid:
6pm EST Dec 10, 2025-6pm EST Dec 17, 2025
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation