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.

A Few Clouds

46°F

8°C

Humidity 51%
Wind Speed SW 6 mph
Barometer 29.86 in (1011.1 mb)
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Wind Chill43°F (6°C)
Last update 14 Mar 3:52 am EDT
Extended Forecast for

Chantilly VA

  • Today

    Today: Mostly sunny, with a high near 57. West wind 10 to 14 mph, with gusts as high as 23 mph.

    High: 57 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 39. Calm wind becoming east around 5 mph after midnight.

    Low: 39 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 59. Southeast wind 6 to 15 mph, with gusts as high as 25 mph.

    High: 59 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Showers. Low around 53. Southeast wind around 14 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 53 °F

    Showers

  • Monday

    Monday: Showers, with thunderstorms also possible after 2pm. High near 71. Breezy, with a south wind 17 to 22 mph, with gusts as high as 37 mph. Chance of precipitation is 100%.

    High: 71 °F

    Showers and
    Breezy

  • Monday Night

    Monday Night: Rain showers likely, mixing with snow after 11pm, then gradually ending. Mostly cloudy, with a low around 29. Chance of precipitation is 60%. Little or no snow accumulation expected.

    Low: 29 °F

    Rain/Snow
    Likely

  • Tuesday

    Tuesday: Mostly sunny, with a high near 38.

    High: 38 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 23.

    Low: 23 °F

    Mostly Clear

  • Wednesday

    Wednesday: Partly sunny, with a high near 44.

    High: 44 °F

    Partly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 57. West wind 10 to 14 mph, with gusts as high as 23 mph.
Tonight
Partly cloudy, with a low around 39. Calm wind becoming east around 5 mph after midnight.
Sunday
Mostly cloudy, with a high near 59. Southeast wind 6 to 15 mph, with gusts as high as 25 mph.
Sunday Night
Showers. Low around 53. Southeast wind around 14 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Monday
Showers, with thunderstorms also possible after 2pm. High near 71. Breezy, with a south wind 17 to 22 mph, with gusts as high as 37 mph. Chance of precipitation is 100%.
Monday Night
Rain showers likely, mixing with snow after 11pm, then gradually ending. Mostly cloudy, with a low around 29. Chance of precipitation is 60%. Little or no snow accumulation expected.
Tuesday
Mostly sunny, with a high near 38.
Tuesday Night
Mostly clear, with a low around 23.
Wednesday
Partly sunny, with a high near 44.
Wednesday Night
Mostly cloudy, with a low around 31.
Thursday
Mostly sunny, with a high near 54.
Thursday Night
Partly cloudy, with a low around 36.
Friday
Mostly sunny, with a high near 61.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Chantilly VA
 38.88°N 77.43°W (Elev. 299 ft)
Last Update:
1:53 am EDT Mar 14, 2026
Forecast Valid:
4am EDT Mar 14, 2026-6pm EDT Mar 20, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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