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.

Partly Cloudy and Breezy

42°F

6°C

Humidity 45%
Wind Speed NW 21 G 31 mph
Barometer 30.26 in (1024.5 mb)
Dewpoint 22°F (-6°C)
Visibility 10.00 mi
Wind Chill33°F (1°C)
Last update 23 Mar 9:52 pm EDT
Extended Forecast for

Chantilly VA

  • Tonight

    Tonight: Partly cloudy, with a low around 32. Northwest wind 10 to 17 mph, with gusts as high as 29 mph.

    Low: 32 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 51. North wind 5 to 7 mph becoming calm in the afternoon.

    High: 51 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 36. Calm wind becoming south around 5 mph after midnight.

    Low: 36 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 60. South wind 6 to 13 mph, with gusts as high as 21 mph.

    High: 60 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 48. South wind around 10 mph, with gusts as high as 18 mph.

    Low: 48 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 73.

    High: 73 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: A chance of rain after 2am. Mostly cloudy, with a low around 55. Chance of precipitation is 50%.

    Low: 55 °F

    Mostly Cloudy
    then Chance
    Rain

  • Friday

    Friday: A chance of rain. Mostly cloudy, with a high near 63. Chance of precipitation is 50%.

    High: 63 °F

    Chance Rain

  • Friday Night

    Friday Night: A chance of rain before 2am. Mostly cloudy, with a low around 31. Chance of precipitation is 30%.

    Low: 31 °F

    Chance Rain

Detailed Forecast

Tonight
Partly cloudy, with a low around 32. Northwest wind 10 to 17 mph, with gusts as high as 29 mph.
Tuesday
Sunny, with a high near 51. North wind 5 to 7 mph becoming calm in the afternoon.
Tuesday Night
Partly cloudy, with a low around 36. Calm wind becoming south around 5 mph after midnight.
Wednesday
Partly sunny, with a high near 60. South wind 6 to 13 mph, with gusts as high as 21 mph.
Wednesday Night
Mostly cloudy, with a low around 48. South wind around 10 mph, with gusts as high as 18 mph.
Thursday
Partly sunny, with a high near 73.
Thursday Night
A chance of rain after 2am. Mostly cloudy, with a low around 55. Chance of precipitation is 50%.
Friday
A chance of rain. Mostly cloudy, with a high near 63. Chance of precipitation is 50%.
Friday Night
A chance of rain before 2am. Mostly cloudy, with a low around 31. Chance of precipitation is 30%.
Saturday
Sunny, with a high near 50.
Saturday Night
Mostly clear, with a low around 32.
Sunday
Sunny, with a high near 58.
Sunday Night
Partly cloudy, with a low around 39.
Monday
Partly sunny, with a high near 65.
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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:
9:32 pm EDT Mar 23, 2026
Forecast Valid:
10pm EDT Mar 23, 2026-6pm EDT Mar 30, 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