National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

Rain Fog/Mist

34°F

1°C

Humidity 97%
Wind Speed Calm
Barometer 29.91 in (1013.3 mb)
Dewpoint 33°F (1°C)
Visibility 2.50 mi
Last update 2 Dec 8:52 am EST
Extended Forecast for

Vienna VA

  • Today

    Today: Rain, mainly before 2pm. Patchy fog before 4pm. High near 39. Calm wind becoming northwest 5 to 9 mph in the afternoon. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 39 °F

    Rain and
    Patchy Fog

  • Tonight

    Tonight: Mostly clear, with a low around 27. Northwest wind around 10 mph, with gusts as high as 21 mph.

    Low: 27 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 41. Northwest wind around 6 mph becoming light and variable in the afternoon.

    High: 41 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 26. Light and variable wind.

    Low: 26 °F

    Mostly Clear

  • Thursday

    Thursday: Partly sunny, with a high near 43. Light northwest wind increasing to 6 to 11 mph in the morning. Winds could gust as high as 21 mph.

    High: 43 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 20.

    Low: 20 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 34.

    High: 34 °F

    Partly Sunny

  • Friday Night

    Friday Night: A chance of snow. Mostly cloudy, with a low around 26. Chance of precipitation is 30%.

    Low: 26 °F

    Chance Snow

  • Saturday

    Saturday: Partly sunny, with a high near 44.

    High: 44 °F

    Partly Sunny

Detailed Forecast

Today
Rain, mainly before 2pm. Patchy fog before 4pm. High near 39. Calm wind becoming northwest 5 to 9 mph in the afternoon. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Tonight
Mostly clear, with a low around 27. Northwest wind around 10 mph, with gusts as high as 21 mph.
Wednesday
Sunny, with a high near 41. Northwest wind around 6 mph becoming light and variable in the afternoon.
Wednesday Night
Mostly clear, with a low around 26. Light and variable wind.
Thursday
Partly sunny, with a high near 43. Light northwest wind increasing to 6 to 11 mph in the morning. Winds could gust as high as 21 mph.
Thursday Night
Partly cloudy, with a low around 20.
Friday
Partly sunny, with a high near 34.
Friday Night
A chance of snow. Mostly cloudy, with a low around 26. Chance of precipitation is 30%.
Saturday
Partly sunny, with a high near 44.
Saturday Night
Mostly cloudy, with a low around 28.
Sunday
Partly sunny, with a high near 41.
Sunday Night
Mostly cloudy, with a low around 25.
Monday
Partly sunny, with a high near 35.
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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:
9:29 am EST Dec 2, 2025
Forecast Valid:
9am EST Dec 2, 2025-6pm EST Dec 8, 2025
 
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