Heavy to Excessive Rains in The Four Corners Region and Midwest; Heat Persists in the South-Central U.S.

Repeated rounds of showers and thunderstorms could bring a flash flooding threat across the Four Corners region and from the mid-Mississippi Valley into the lower Great Lakes. Hot temperatures and high humidity will continue to challenge daily records from the Southern Plains to the lower Mississippi Valley. Read More >

Current conditions at

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

A Few Clouds

84°F

29°C

Humidity 55%
Wind Speed S 6 mph
Barometer 30.29 in (1025.4 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Heat Index86°F (30°C)
Last update 16 Sep 4:52 pm EDT
Extended Forecast for

Vienna VA

  • Tonight

    Tonight: Partly cloudy, with a low around 66. South wind 3 to 6 mph.

    Low: 66 °F

    Partly Cloudy

  • Thursday

    Thursday: A chance of showers and thunderstorms after 2pm.  Mostly sunny, with a high near 89. South wind 5 to 7 mph.  Chance of precipitation is 40%.

    High: 89 °F

    Mostly Sunny
    then Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before midnight, then a slight chance of showers between midnight and 2am.  Mostly cloudy, with a low around 70. Southwest wind around 5 mph becoming calm  in the evening.  Chance of precipitation is 50%.

    Low: 70 °F

    Chance
    Showers then
    Slight Chance
    Showers

  • Friday

    Friday: Mostly sunny, with a high near 85. North wind 7 to 10 mph.

    High: 85 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 62. Northeast wind 6 to 8 mph.

    Low: 62 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 82.

    High: 82 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 65.

    Low: 65 °F

    Mostly Cloudy

  • Sunday

    Sunday: A slight chance of showers, then showers likely and possibly a thunderstorm after 2pm.  Partly sunny, with a high near 84. Chance of precipitation is 60%.

    High: 84 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Sunday Night

    Sunday Night: Showers likely and possibly a thunderstorm before 2am, then a slight chance of showers.  Mostly cloudy, with a low around 65. Chance of precipitation is 60%.

    Low: 65 °F

    Showers
    Likely

Detailed Forecast

Tonight
Partly cloudy, with a low around 66. South wind 3 to 6 mph.
Thursday
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 89. South wind 5 to 7 mph. Chance of precipitation is 40%.
Thursday Night
A chance of showers and thunderstorms before midnight, then a slight chance of showers between midnight and 2am. Mostly cloudy, with a low around 70. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 50%.
Friday
Mostly sunny, with a high near 85. North wind 7 to 10 mph.
Friday Night
Partly cloudy, with a low around 62. Northeast wind 6 to 8 mph.
Saturday
Mostly sunny, with a high near 82.
Saturday Night
Mostly cloudy, with a low around 65.
Sunday
A slight chance of showers, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 84. Chance of precipitation is 60%.
Sunday Night
Showers likely and possibly a thunderstorm before 2am, then a slight chance of showers. Mostly cloudy, with a low around 65. Chance of precipitation is 60%.
Monday
A chance of showers, mainly after 8am. Mostly cloudy, with a high near 77. Chance of precipitation is 40%.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 64. Chance of precipitation is 50%.
Tuesday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 74. Chance of precipitation is 50%.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 62. Chance of precipitation is 40%.
Wednesday
A chance of showers. Mostly cloudy, with a high near 73. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
Vienna VA
 38.91°N 77.25°W (Elev. 397 ft)
4:52 pm EDT Sep 16, 2026
6pm EDT Sep 16, 2026-6pm EDT Sep 23, 2026
 
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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