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

51°F

11°C

Humidity 52%
Wind Speed S 10 mph
Barometer 30.03 in (1016.7 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill47°F (8°C)
Last update 26 Mar 6:52 am EDT
Extended Forecast for

Chantilly VA

  • Today

    Today: Mostly sunny, with a high near 77. Southwest wind 9 to 14 mph, with gusts as high as 22 mph.

    High: 77 °F

    Mostly Sunny

  • Tonight

    Tonight: A slight chance of rain before 4am, then a chance of rain after 5am. Increasing clouds, with a low around 51. Southwest wind 9 to 14 mph, with gusts as high as 18 mph. Chance of precipitation is 30%.

    Low: 51 °F

    Mostly Cloudy
    then Chance
    Rain

  • Friday

    Friday: Rain, mainly after 7am. Temperature falling to around 51 by 5pm. North wind around 14 mph, with gusts as high as 18 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    High: 64 °F⇓

    Rain

  • Friday Night

    Friday Night: Rain, mainly before 8pm. Low around 34. Northwest wind 6 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 34 °F

    Rain then
    Chance Rain

  • Saturday

    Saturday: Sunny, with a high near 48. Northwest wind 11 to 13 mph, with gusts as high as 23 mph.

    High: 48 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 32.

    Low: 32 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 59.

    High: 59 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 44.

    Low: 44 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 66.

    High: 66 °F

    Partly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 77. Southwest wind 9 to 14 mph, with gusts as high as 22 mph.
Tonight
A slight chance of rain before 4am, then a chance of rain after 5am. Increasing clouds, with a low around 51. Southwest wind 9 to 14 mph, with gusts as high as 18 mph. Chance of precipitation is 30%.
Friday
Rain, mainly after 7am. Temperature falling to around 51 by 5pm. North wind around 14 mph, with gusts as high as 18 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Friday Night
Rain, mainly before 8pm. Low around 34. Northwest wind 6 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
Sunny, with a high near 48. Northwest wind 11 to 13 mph, with gusts as high as 23 mph.
Saturday Night
Mostly clear, with a low around 32.
Sunday
Sunny, with a high near 59.
Sunday Night
Partly cloudy, with a low around 44.
Monday
Partly sunny, with a high near 66.
Monday Night
A chance of rain after 8pm. Mostly cloudy, with a low around 53. Chance of precipitation is 30%.
Tuesday
A chance of rain. Mostly cloudy, with a high near 72. Chance of precipitation is 40%.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 55. Chance of precipitation is 40%.
Wednesday
A chance of rain. Partly sunny, with a high near 78. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Chantilly VA
 38.88°N 77.43°W (Elev. 299 ft)
Last Update:
4:55 am EDT Mar 26, 2026
Forecast Valid:
7am EDT Mar 26, 2026-6pm EDT Apr 1, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation