Severe Weather and Heavy Rain from the Great Lakes to the Mid-Atlantic; Heat Persists in the East

Widespread strong thunderstorms with damaging winds and locally heavy rain are expected from the Upper Ohio Valley into the southern Mid-Atlantic today and portions of the central Appalachians and Carolinas on Saturday. Monsoonal moisture will bring a flash flooding threat to the Desert Southwest. Sweltering heat persists from the Plains to the southern Mid-Atlantic through tonight. Read More >

Hazardous Weather Conditions

Current conditions at

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

A Few Clouds

81°F

27°C

Humidity 69%
Wind Speed NW 7 mph
Barometer 29.98 in (1014.7 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 4 Sep 9:52 am EDT
Extended Forecast for

2 Miles ESE Great Falls VA

  • Today

    Today: A chance of showers and thunderstorms, mainly after 4pm.  Increasing clouds, with a high near 90. Northwest wind 6 to 8 mph, with gusts as high as 18 mph.  Chance of precipitation is 30%.

    High: 90 °F

    Sunny then
    Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms, mainly before 9pm.  Mostly cloudy, with a low around 71. Northwest wind 3 to 5 mph.  Chance of precipitation is 40%.

    Low: 71 °F

    Chance
    T-storms then
    Mostly Cloudy

  • Saturday

    Saturday: A slight chance of showers and thunderstorms before 10am, then a slight chance of showers and thunderstorms after 4pm.  Partly sunny, with a high near 83. North wind 3 to 6 mph.  Chance of precipitation is 20%.

    High: 83 °F

    Slight Chance
    T-storms then
    Partly Sunny

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 8pm.  Partly cloudy, with a low around 64. Light north wind.  Chance of precipitation is 30%.

    Low: 64 °F

    Chance
    T-storms then
    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 81. Northeast wind around 7 mph.

    High: 81 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 61.

    Low: 61 °F

    Mostly Clear

  • Labor Day

    Labor Day: Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 62.

    Low: 62 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 84.

    High: 84 °F

    Mostly Sunny

Detailed Forecast

Today
A chance of showers and thunderstorms, mainly after 4pm. Increasing clouds, with a high near 90. Northwest wind 6 to 8 mph, with gusts as high as 18 mph. Chance of precipitation is 30%.
Tonight
A chance of showers and thunderstorms, mainly before 9pm. Mostly cloudy, with a low around 71. Northwest wind 3 to 5 mph. Chance of precipitation is 40%.
Saturday
A slight chance of showers and thunderstorms before 10am, then a slight chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 83. North wind 3 to 6 mph. Chance of precipitation is 20%.
Saturday Night
A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 64. Light north wind. Chance of precipitation is 30%.
Sunday
Mostly sunny, with a high near 81. Northeast wind around 7 mph.
Sunday Night
Mostly clear, with a low around 61.
Labor Day
Mostly sunny, with a high near 81.
Monday Night
Partly cloudy, with a low around 62.
Tuesday
Mostly sunny, with a high near 84.
Tuesday Night
Partly cloudy, with a low around 65.
Wednesday
Mostly sunny, with a high near 86.
Wednesday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 71. Chance of precipitation is 20%.
Thursday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 89. Chance of precipitation is 20%.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ESE Great Falls VA
 39°N 77.24°W (Elev. 318 ft)
7:53 am EDT Sep 4, 2026
10am EDT Sep 4, 2026-6pm EDT Sep 10, 2026
 
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Additional Resources

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Hourly Weather Forecast

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