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.

Mostly Cloudy

37°F

3°C

Humidity 67%
Wind Speed S 8 mph
Barometer 30.27 in (1025.3 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Wind Chill31°F (-1°C)
Last update 19 Mar 8:52 am EDT
Extended Forecast for

Chantilly VA

  • Today

    Today: Partly sunny, with a high near 57. South wind around 6 mph.

    High: 57 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 38. Calm wind.

    Low: 38 °F

    Mostly Cloudy

  • Friday

    Friday: A slight chance of showers after 2pm. Partly sunny, with a high near 67. Light and variable wind becoming south 6 to 11 mph in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 20%.

    High: 67 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers, mainly between 8pm and 2am. Mostly cloudy, with a low around 50. South wind 7 to 9 mph. Chance of precipitation is 50%.

    Low: 50 °F

    Chance
    Showers

  • Saturday

    Saturday: Mostly sunny, with a high near 69. Northwest wind 6 to 8 mph.

    High: 69 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 46.

    Low: 46 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 74.

    High: 74 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A chance of rain. Mostly cloudy, with a low around 45. Chance of precipitation is 40%.

    Low: 45 °F

    Chance Rain

  • Monday

    Monday: Partly sunny, with a high near 56.

    High: 56 °F

    Partly Sunny

Detailed Forecast

Today
Partly sunny, with a high near 57. South wind around 6 mph.
Tonight
Mostly cloudy, with a low around 38. Calm wind.
Friday
A slight chance of showers after 2pm. Partly sunny, with a high near 67. Light and variable wind becoming south 6 to 11 mph in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 20%.
Friday Night
A chance of showers, mainly between 8pm and 2am. Mostly cloudy, with a low around 50. South wind 7 to 9 mph. Chance of precipitation is 50%.
Saturday
Mostly sunny, with a high near 69. Northwest wind 6 to 8 mph.
Saturday Night
Partly cloudy, with a low around 46.
Sunday
Mostly sunny, with a high near 74.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 45. Chance of precipitation is 40%.
Monday
Partly sunny, with a high near 56.
Monday Night
Partly cloudy, with a low around 31.
Tuesday
Mostly sunny, with a high near 50.
Tuesday Night
Mostly cloudy, with a low around 34.
Wednesday
Partly sunny, with a high near 58.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Chantilly VA
 38.88°N 77.43°W (Elev. 299 ft)
Last Update:
7:03 am EDT Mar 19, 2026
Forecast Valid:
9am EDT Mar 19, 2026-6pm EDT Mar 25, 2026
 
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