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

Hazardous Weather Conditions

Current conditions at

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

Mostly Cloudy

31°F

-1°C

Humidity 92%
Wind Speed Calm
Barometer 29.95 in (1014.5 mb)
Dewpoint 29°F (-2°C)
Visibility 7.00 mi
Last update 6 Dec 6:52 am EST
Extended Forecast for

3 Miles SSE Chantilly VA

  • Today

    Today: Patchy fog before 9am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 42. Calm wind.

    High: 42 °F

    Patchy Fog
    then Partly
    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 27. Calm wind.

    Low: 27 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 43. Calm wind becoming south around 5 mph in the afternoon.

    High: 43 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 26. Light and variable wind becoming north 5 to 10 mph after midnight.

    Low: 26 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 34. North wind 10 to 13 mph, with gusts as high as 22 mph.

    High: 34 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 18.

    Low: 18 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 37.

    High: 37 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 29.

    Low: 29 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 47.

    High: 47 °F

    Mostly Cloudy

Detailed Forecast

Today
Patchy fog before 9am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 42. Calm wind.
Tonight
Partly cloudy, with a low around 27. Calm wind.
Sunday
Partly sunny, with a high near 43. Calm wind becoming south around 5 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 26. Light and variable wind becoming north 5 to 10 mph after midnight.
Monday
Mostly sunny, with a high near 34. North wind 10 to 13 mph, with gusts as high as 22 mph.
Monday Night
Partly cloudy, with a low around 18.
Tuesday
Mostly sunny, with a high near 37.
Tuesday Night
Mostly cloudy, with a low around 29.
Wednesday
Mostly cloudy, with a high near 47.
Wednesday Night
A chance of rain after 1am. Mostly cloudy, with a low around 33. Chance of precipitation is 30%.
Thursday
Partly sunny, with a high near 44.
Thursday Night
A chance of rain and snow. Mostly cloudy, with a low around 29. Chance of precipitation is 40%.
Friday
Partly sunny, with a high near 40.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSE Chantilly VA
 38.84°N 77.38°W (Elev. 449 ft)
Last Update:
6:53 am EST Dec 6, 2025
Forecast Valid:
7am EST Dec 6, 2025-6pm EST Dec 12, 2025
 
Forecast Discussion
 
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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