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

50°F

10°C

Humidity 29%
Wind Speed S 12 G 22 mph
Barometer 30.01 in (1016.5 mb)
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Wind Chill45°F (7°C)
Last update 13 Jan 11:52 am EST
Extended Forecast for

Vienna VA

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 51. South wind 7 to 10 mph.

    High: 51 °F

    Mostly Sunny

  • Tonight

    Tonight: A slight chance of rain after 1am. Mostly cloudy, with a low around 40. Southwest wind 8 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.

    Low: 40 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Wednesday

    Wednesday: A chance of rain, mainly after 1pm. Cloudy, with a high near 52. Southwest wind around 6 mph. Chance of precipitation is 40%.

    High: 52 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: A chance of rain before 4am, then a chance of snow. Mostly cloudy, with a low around 25. Light and variable wind becoming northwest 12 to 17 mph in the evening. Winds could gust as high as 31 mph. Chance of precipitation is 50%.

    Low: 25 °F

    Chance Rain
    then Chance
    Rain/Snow

  • Thursday

    Thursday: A chance of snow before 7am. Partly sunny, with a high near 30. Northwest wind 16 to 18 mph, with gusts as high as 31 mph. Chance of precipitation is 30%.

    High: 30 °F

    Chance Snow
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 17.

    Low: 17 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 34.

    High: 34 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 27.

    Low: 27 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 43.

    High: 43 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 51. South wind 7 to 10 mph.
Tonight
A slight chance of rain after 1am. Mostly cloudy, with a low around 40. Southwest wind 8 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.
Wednesday
A chance of rain, mainly after 1pm. Cloudy, with a high near 52. Southwest wind around 6 mph. Chance of precipitation is 40%.
Wednesday Night
A chance of rain before 4am, then a chance of snow. Mostly cloudy, with a low around 25. Light and variable wind becoming northwest 12 to 17 mph in the evening. Winds could gust as high as 31 mph. Chance of precipitation is 50%.
Thursday
A chance of snow before 7am. Partly sunny, with a high near 30. Northwest wind 16 to 18 mph, with gusts as high as 31 mph. Chance of precipitation is 30%.
Thursday Night
Partly cloudy, with a low around 17.
Friday
Mostly sunny, with a high near 34.
Friday Night
Partly cloudy, with a low around 27.
Saturday
Mostly sunny, with a high near 43.
Saturday Night
Mostly cloudy, with a low around 24.
Sunday
Partly sunny, with a high near 34.
Sunday Night
Partly cloudy, with a low around 19.
M.L.King Day
Mostly sunny, with a high near 32.
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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:
9:54 am EST Jan 13, 2026
Forecast Valid:
12pm EST Jan 13, 2026-6pm EST Jan 19, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation