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.

Partly Cloudy

31°C

87°F

Humidity 45%
Wind Speed NW 11 G 28 km/h
Barometer 1012.5 mb (29.91 in)
Dewpoint 17°C (63°F)
Visibility 16 km
Heat Index31°C (88°F)
Last update 3 Jul 2:52 pm EDT
Extended Forecast for

Vienna VA

  • Tonight

    Tonight: Mostly clear, with a low around 19. Northwest wind 8 to 10 km/h.

    Low: 19 °C

    Mostly Clear

  • Independence Day

    Independence Day: Sunny, with a high near 30. North wind 8 to 10 km/h.

    High: 30 °C

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 19. Calm wind.

    Low: 19 °C

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 31. Calm wind becoming south 5 to 10 km/h in the morning.

    High: 31 °C

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 19. South wind 8 to 10 km/h.

    Low: 19 °C

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 32.

    High: 32 °C

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 22.

    Low: 22 °C

    Partly Cloudy

  • Monday

    Monday: A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 33. Chance of precipitation is 40%.

    High: 33 °C

    Mostly Sunny
    then Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 23. Chance of precipitation is 30%.

    Low: 23 °C

    Chance
    T-storms then
    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 19. Northwest wind 8 to 10 km/h.
Independence Day
Sunny, with a high near 30. North wind 8 to 10 km/h.
Friday Night
Mostly clear, with a low around 19. Calm wind.
Saturday
Sunny, with a high near 31. Calm wind becoming south 5 to 10 km/h in the morning.
Saturday Night
Mostly clear, with a low around 19. South wind 8 to 10 km/h.
Sunday
Sunny, with a high near 32.
Sunday Night
Partly cloudy, with a low around 22.
Monday
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 33. Chance of precipitation is 40%.
Monday Night
A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 23. Chance of precipitation is 30%.
Tuesday
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 33. Chance of precipitation is 50%.
Tuesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 22. Chance of precipitation is 30%.
Wednesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 32. Chance of precipitation is 40%.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 22. Chance of precipitation is 30%.
Thursday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 31. Chance of precipitation is 60%.
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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 m)
Last Update:
1:30 pm EDT Jul 3, 2025
Forecast Valid:
3pm EDT Jul 3, 2025-6pm EDT Jul 10, 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