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

Typhoon Sinlaku to Impact the Marianas and Guam; Severe Weather from the Southern Plains to the Great Lakes

Typhoon Sinlaku will bring destructive winds, widespread heavy rain/flooding, thunderstorms, and coastal impacts to the Marianas Islands into Wednesday. Typhoon conditions are likely over CNMI and tropical storm conditions over Guam. Severe thunderstorms and heavy rain are expected from the Southern Plains to the Great Lakes today. Read More >

Hazardous Weather Conditions

Current conditions at

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

Partly Cloudy

86°F

30°C

Humidity 35%
Wind Speed S 16 G 23 mph
Barometer 29.92 in (1013.0 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 14 Apr 4:52 pm EDT
Extended Forecast for

Vienna VA

  • Tonight

    Tonight: Isolated showers and thunderstorms before 8pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 67. Southwest wind 5 to 10 mph becoming light after midnight. Winds could gust as high as 18 mph. Chance of precipitation is 20%.

    Low: 67 °F

    Isolated
    T-storms then
    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 92. Southwest wind 3 to 8 mph. Winds could gust as high as 18 mph.

    High: 92 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 70. Southwest wind 5 to 7 mph.

    Low: 70 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 91. Southwest wind 3 to 8 mph.

    High: 91 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: A slight chance of showers. Mostly cloudy, with a low around 70. West wind 6 to 8 mph. Chance of precipitation is 20%.

    Low: 70 °F

    Slight Chance
    Showers

  • Friday

    Friday: A chance of showers, mainly after 2pm. Mostly sunny, with a high near 85. Chance of precipitation is 30%.

    High: 85 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers before 8pm. Mostly clear, with a low around 62. Chance of precipitation is 30%.

    Low: 62 °F

    Chance
    Showers then
    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 89.

    High: 89 °F

    Sunny

  • Saturday Night

    Saturday Night: A chance of showers. Mostly cloudy, with a low around 59. Chance of precipitation is 30%.

    Low: 59 °F

    Chance
    Showers

Detailed Forecast

Tonight
Isolated showers and thunderstorms before 8pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 67. Southwest wind 5 to 10 mph becoming light after midnight. Winds could gust as high as 18 mph. Chance of precipitation is 20%.
Wednesday
Sunny, with a high near 92. Southwest wind 3 to 8 mph. Winds could gust as high as 18 mph.
Wednesday Night
Partly cloudy, with a low around 70. Southwest wind 5 to 7 mph.
Thursday
Partly sunny, with a high near 91. Southwest wind 3 to 8 mph.
Thursday Night
A slight chance of showers. Mostly cloudy, with a low around 70. West wind 6 to 8 mph. Chance of precipitation is 20%.
Friday
A chance of showers, mainly after 2pm. Mostly sunny, with a high near 85. Chance of precipitation is 30%.
Friday Night
A chance of showers before 8pm. Mostly clear, with a low around 62. Chance of precipitation is 30%.
Saturday
Sunny, with a high near 89.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 59. Chance of precipitation is 30%.
Sunday
Showers likely, mainly after 2pm. Mostly cloudy, with a high near 73. Chance of precipitation is 60%.
Sunday Night
Showers likely. Partly cloudy, with a low around 43. Chance of precipitation is 60%.
Monday
Sunny, with a high near 59.
Monday Night
Mostly clear, with a low around 39.
Tuesday
Sunny, with a high near 63.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Vienna VA
 38.89°N 77.25°W (Elev. 348 ft)
Last Update:
5:36 pm EDT Apr 14, 2026
Forecast Valid:
5pm EDT Apr 14, 2026-6pm EDT Apr 21, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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