Heat Wave Expands to the East Coast; Flash Flooding Likely in the Central Plains into the Midwest; Severe Thunderstorms in the Northeast

Dangerous, prolonged heat is ongoing in the Mid-South to Mid-Mississippi Valley and heat expands into the Northeast for a brief period today. Widely scattered instances of flash flooding due to heavy rains are forecast from northeast Kansas to much of Indiana. Scattered strong to severe thunderstorms are possible across parts of New England, northern Mid-Atlantic, and North Dakota. Read More >

Current conditions at

Marion - Williamson County Regional Airport (KMWA)

Lat: 37.77°NLon: 89.01°WElev: 486ft.

Partly Cloudy

81°F

27°C

Humidity 84%
Wind Speed SW 6 mph
Barometer 30.10 in
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index87°F (31°C)
Last update 27 Jul 8:47 am CDT
Extended Forecast for

Goreville IL

Extreme Heat Watch July 28, 12:00pm until July 30, 08:00pm
Heat Advisory July 27, 09:46am until July 28, 12:00pm
Click here for hazard details and duration
Extreme Heat Watch
Heat Advisory
  •  
    Heat Advisory July 27, 09:46am until July 28, 12:00pm

    NOW until 12:00pm Mon

    Heat Advisory

  • Today

    High: 90 °F

    Chance
    T-storms

  • Tonight

    Tonight: Partly cloudy, with a low around 76. South southwest wind 3 to 6 mph.

    Low: 76 °F

    Partly Cloudy

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms, mainly after 1pm.  Patchy fog before 8am.  Otherwise, mostly sunny, with a high near 94. Heat index values as high as 106. Light and variable wind becoming west southwest around 6 mph in the afternoon.

    High: 94 °F

    Chance
    T-storms and
    Patchy Fog

  • Monday Night

    Monday Night: Mostly clear, with a low around 77. Calm wind.

    Low: 77 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 96. Calm wind.

    High: 96 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 77. Calm wind.

    Low: 77 °F

    Mostly Clear

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms after 1pm.  Sunny, with a high near 94. Light northeast wind.

    High: 94 °F

    Sunny then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms, mainly before 1am.  Partly cloudy, with a low around 75. Light north northeast wind.

    Low: 75 °F

    Chance
    T-storms

Detailed Forecast

Today
A 40 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 90. South southwest wind around 8 mph.
Tonight
Partly cloudy, with a low around 76. South southwest wind 3 to 6 mph.
Monday
A 30 percent chance of showers and thunderstorms, mainly after 1pm. Patchy fog before 8am. Otherwise, mostly sunny, with a high near 94. Heat index values as high as 106. Light and variable wind becoming west southwest around 6 mph in the afternoon.
Monday Night
Mostly clear, with a low around 77. Calm wind.
Tuesday
Sunny, with a high near 96. Calm wind.
Tuesday Night
Mostly clear, with a low around 77. Calm wind.
Wednesday
A 30 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 94. Light northeast wind.
Wednesday Night
A chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 75. Light north northeast wind.
Thursday
A chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 85. North northeast wind 6 to 8 mph.
Thursday Night
A slight chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 69. Northeast wind around 8 mph.
Friday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 82. Northeast wind 8 to 10 mph, with gusts as high as 18 mph.
Friday Night
Partly cloudy, with a low around 65. Northeast wind 6 to 9 mph.
Saturday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 82. Northeast wind 6 to 8 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Goreville IL
 37.56°N 88.99°W
7:17 am CDT Jul 27, 2025
9am CDT Jul 27, 2025-6pm CDT Aug 2, 2025
 
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Additional Resources

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