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

40°F

4°C

Humidity 65%
Wind Speed S 6 mph
Barometer 30.34 in (1027.5 mb)
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Wind Chill36°F (2°C)
Last update 25 Mar 3:52 am EDT
Extended Forecast for

Vienna VA

  • Today

    Today: Partly sunny, with a high near 59. South wind 6 to 10 mph, with gusts as high as 18 mph.

    High: 59 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 48. South wind 8 to 10 mph, with gusts as high as 18 mph.

    Low: 48 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 74. South wind 10 to 13 mph, with gusts as high as 23 mph.

    High: 74 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Rain likely, mainly after 2am. Increasing clouds, with a low around 54. Southwest wind 11 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 54 °F

    Slight Chance
    Rain then
    Rain Likely

  • Friday

    Friday: Rain likely. Cloudy, with a high near 62. North wind 11 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 70%.

    High: 62 °F

    Rain Likely

  • Friday Night

    Friday Night: A slight chance of rain before 2am. Mostly cloudy, with a low around 33. Chance of precipitation is 20%.

    Low: 33 °F

    Slight Chance
    Rain

  • Saturday

    Saturday: Sunny, with a high near 50.

    High: 50 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 33.

    Low: 33 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 58.

    High: 58 °F

    Sunny

Detailed Forecast

Today
Partly sunny, with a high near 59. South wind 6 to 10 mph, with gusts as high as 18 mph.
Tonight
Mostly cloudy, with a low around 48. South wind 8 to 10 mph, with gusts as high as 18 mph.
Thursday
Partly sunny, with a high near 74. South wind 10 to 13 mph, with gusts as high as 23 mph.
Thursday Night
Rain likely, mainly after 2am. Increasing clouds, with a low around 54. Southwest wind 11 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Rain likely. Cloudy, with a high near 62. North wind 11 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 70%.
Friday Night
A slight chance of rain before 2am. Mostly cloudy, with a low around 33. Chance of precipitation is 20%.
Saturday
Sunny, with a high near 50.
Saturday Night
Mostly clear, with a low around 33.
Sunday
Sunny, with a high near 58.
Sunday Night
Partly cloudy, with a low around 42.
Monday
Partly sunny, with a high near 65.
Monday Night
Partly cloudy, with a low around 51.
Tuesday
Mostly sunny, with a high near 73.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Vienna VA
 38.89°N 77.25°W (Elev. 348 ft)
Last Update:
2:24 am EDT Mar 25, 2026
Forecast Valid:
4am EDT Mar 25, 2026-6pm EDT Mar 31, 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