Current conditions at

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

Overcast

75°F

24°C

Humidity 96%
Wind Speed Calm
Barometer 29.88 in (1011.5 mb)
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Last update 20 Jul 2:52 am EDT
Extended Forecast for

Vienna VA

  • Overnight

    Overnight: Mostly cloudy, with a low around 72. Calm wind.

    Low: 72 °F

    Mostly Cloudy

  • Sunday

    Sunday: Isolated showers and thunderstorms between 2pm and 3pm.  Mostly sunny, with a high near 91. Light west wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 18 mph.  Chance of precipitation is 20%.

    High: 91 °F

    Mostly Sunny
    then Isolated
    T-storms

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 72. Northwest wind around 8 mph.

    Low: 72 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 85. North wind around 7 mph.

    High: 85 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 65. Northeast wind 3 to 5 mph.

    Low: 65 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 83.

    High: 83 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 65.

    Low: 65 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 84.

    High: 84 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 66.

    Low: 66 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 72. Calm wind.
Sunday
Isolated showers and thunderstorms between 2pm and 3pm. Mostly sunny, with a high near 91. Light west wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 18 mph. Chance of precipitation is 20%.
Sunday Night
Partly cloudy, with a low around 72. Northwest wind around 8 mph.
Monday
Mostly sunny, with a high near 85. North wind around 7 mph.
Monday Night
Mostly clear, with a low around 65. Northeast wind 3 to 5 mph.
Tuesday
Sunny, with a high near 83.
Tuesday Night
Mostly clear, with a low around 65.
Wednesday
Mostly sunny, with a high near 84.
Wednesday Night
Partly cloudy, with a low around 66.
Thursday
Sunny, with a high near 90.
Thursday Night
Mostly clear, with a low around 72.
Friday
Sunny and hot, with a high near 97.
Friday Night
Partly cloudy, with a low around 76.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 94. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
Vienna VA
 38.89°N 77.25°W (Elev. 348 ft)
1:30 am EDT Jul 20, 2025
3am EDT Jul 20, 2025-6pm EDT Jul 26, 2025
 
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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