Super Typhoon Sinlaku to Impact the Marianas and Guam; Severe Weather Threat from the Central Plains to the Great Lakes

Super Typhoon Sinlaku will bring destructive winds, widespread heavy rain/flooding, and thunderstorms to the Marianas Islands into Wednesday. Tropical Storm conditions are likely over Guam. Severe thunderstorms and heavy rain are likely across the Upper Mississippi Valley and Great Lakes region with potential for large to very large hail, damaging wind, and tornadoes through Tuesday. Read More >

Current conditions at

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

Mostly Cloudy

77°F

25°C

Humidity 43%
Wind Speed SW 17 G 30 mph
Barometer 30.06 in (1017.7 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 13 Apr 3:52 pm EDT
Extended Forecast for

Great Falls VA

  • This Afternoon

    This Afternoon: Isolated showers before 5pm.  Mostly cloudy, with a high near 80. Southwest wind around 16 mph, with gusts as high as 29 mph.  Chance of precipitation is 20%.

    High: 80 °F

    Isolated
    Showers

  • Tonight

    Tonight: Partly cloudy, with a low around 63. Southwest wind 3 to 7 mph.

    Low: 63 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 87. Calm wind becoming southwest 5 to 9 mph in the morning. Winds could gust as high as 18 mph.

    High: 87 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 67. Southwest wind 3 to 6 mph.

    Low: 67 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 92. Southwest wind 3 to 8 mph.

    High: 92 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 68.

    Low: 68 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 92.

    High: 92 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: A chance of showers after 2am.  Mostly cloudy, with a low around 68. Chance of precipitation is 30%.

    Low: 68 °F

    Mostly Cloudy
    then Chance
    Showers

  • Friday

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

    High: 85 °F

    Chance
    Showers

Detailed Forecast

This Afternoon
Isolated showers before 5pm. Mostly cloudy, with a high near 80. Southwest wind around 16 mph, with gusts as high as 29 mph. Chance of precipitation is 20%.
Tonight
Partly cloudy, with a low around 63. Southwest wind 3 to 7 mph.
Tuesday
Mostly sunny, with a high near 87. Calm wind becoming southwest 5 to 9 mph in the morning. Winds could gust as high as 18 mph.
Tuesday Night
Partly cloudy, with a low around 67. Southwest wind 3 to 6 mph.
Wednesday
Mostly sunny, with a high near 92. Southwest wind 3 to 8 mph.
Wednesday Night
Partly cloudy, with a low around 68.
Thursday
Partly sunny, with a high near 92.
Thursday Night
A chance of showers after 2am. Mostly cloudy, with a low around 68. Chance of precipitation is 30%.
Friday
A chance of showers before 2pm. Mostly sunny, with a high near 85. Chance of precipitation is 30%.
Friday Night
Partly cloudy, with a low around 62.
Saturday
Mostly sunny, with a high near 90.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 64. Chance of precipitation is 30%.
Sunday
A chance of showers. Mostly cloudy, with a high near 80. Chance of precipitation is 50%.
Sunday Night
A chance of showers. Partly cloudy, with a low around 43. Chance of precipitation is 30%.
Monday
Sunny, with a high near 62.
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ABOUT THIS FORECAST

 
Point Forecast:
Great Falls VA
 39.01°N 77.29°W (Elev. 348 ft)
2:23 pm EDT Apr 13, 2026
4pm EDT Apr 13, 2026-6pm EDT Apr 20, 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