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

56°F

13°C

Humidity 37%
Wind Speed Vrbl 3 mph
Barometer 30.18 in (1022.2 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Last update 19 Mar 2:52 pm EDT
Extended Forecast for

Vienna VA

  • Tonight

    Tonight: Mostly clear, with a low around 38. Light south wind.

    Low: 38 °F

    Mostly Clear

  • Friday

    Friday: Scattered showers after 2pm. Increasing clouds, with a high near 67. Light south wind becoming southwest 9 to 14 mph in the morning. Winds could gust as high as 24 mph. Chance of precipitation is 30%.

    High: 67 °F

    Sunny then
    Scattered
    Showers

  • Friday Night

    Friday Night: Showers likely, mainly between 8pm and 2am. Mostly cloudy, with a low around 48. Southwest wind 6 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 48 °F

    Showers
    Likely

  • Saturday

    Saturday: Mostly sunny, with a high near 68. Northwest wind around 7 mph.

    High: 68 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 46. East wind 3 to 5 mph.

    Low: 46 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 74.

    High: 74 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A chance of rain after 2am. Mostly cloudy, with a low around 52. Chance of precipitation is 40%.

    Low: 52 °F

    Mostly Cloudy
    then Chance
    Rain

  • Monday

    Monday: A chance of rain before 8am. Mostly sunny, with a high near 62. Chance of precipitation is 30%.

    High: 62 °F

    Chance Rain
    then Mostly
    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 31.

    Low: 31 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 38. Light south wind.
Friday
Scattered showers after 2pm. Increasing clouds, with a high near 67. Light south wind becoming southwest 9 to 14 mph in the morning. Winds could gust as high as 24 mph. Chance of precipitation is 30%.
Friday Night
Showers likely, mainly between 8pm and 2am. Mostly cloudy, with a low around 48. Southwest wind 6 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
Mostly sunny, with a high near 68. Northwest wind around 7 mph.
Saturday Night
Mostly cloudy, with a low around 46. East wind 3 to 5 mph.
Sunday
Mostly sunny, with a high near 74.
Sunday Night
A chance of rain after 2am. Mostly cloudy, with a low around 52. Chance of precipitation is 40%.
Monday
A chance of rain before 8am. Mostly sunny, with a high near 62. Chance of precipitation is 30%.
Monday Night
Mostly clear, with a low around 31.
Tuesday
Mostly sunny, with a high near 51.
Tuesday Night
Mostly cloudy, with a low around 37.
Wednesday
Mostly cloudy, with a high near 55.
Wednesday Night
Mostly cloudy, with a low around 39.
Thursday
Partly sunny, with a high near 63.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Vienna VA
 38.89°N 77.25°W (Elev. 348 ft)
Last Update:
2:22 pm EDT Mar 19, 2026
Forecast Valid:
3pm EDT Mar 19, 2026-6pm EDT Mar 26, 2026
 
Forecast Discussion
 
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Additional Resources

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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