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

Hazardous Weather Conditions

Current conditions at

Marion - Williamson County Regional Airport (KMWA)

Lat: 37.77°NLon: 89.01°WElev: 486ft.

Fair

88°F

31°C

Humidity 62%
Wind Speed SW 7 mph
Barometer 30.09 in
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index96°F (36°C)
Last update 1 Sep 9:45 am CDT
Extended Forecast for

2 Miles SSW Goreville IL

Heat Advisory September 1, 09:50am until September 4, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory September 1, 09:50am until September 4, 08:00pm

    NOW until 8:00pm Fri

    Heat Advisory

  • Today

    High: 97 °F

    Hot

  • Tonight

    Tonight: Clear, with a low around 74. Calm wind.

    Low: 74 °F

    Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 97. Calm wind becoming south southwest around 6 mph in the afternoon.

    High: 97 °F

    Hot

  • Wednesday Night

    Wednesday Night: Clear, with a low around 75. Calm wind.

    Low: 75 °F

    Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 97. Calm wind becoming south southwest around 6 mph in the afternoon.

    High: 97 °F

    Hot

  • Thursday Night

    Thursday Night: Clear, with a low around 74. Calm wind.

    Low: 74 °F

    Clear

  • Friday

    Friday: Sunny and hot, with a high near 97. Light south southwest wind.

    High: 97 °F

    Hot

  • Friday Night

    Friday Night: Mostly clear, with a low around 75. Calm wind.

    Low: 75 °F

    Mostly Clear

Detailed Forecast

Today
Sunny and hot, with a high near 97. Calm wind becoming west southwest around 5 mph in the afternoon.
Tonight
Clear, with a low around 74. Calm wind.
Wednesday
Sunny and hot, with a high near 97. Calm wind becoming south southwest around 6 mph in the afternoon.
Wednesday Night
Clear, with a low around 75. Calm wind.
Thursday
Sunny and hot, with a high near 97. Calm wind becoming south southwest around 6 mph in the afternoon.
Thursday Night
Clear, with a low around 74. Calm wind.
Friday
Sunny and hot, with a high near 97. Light south southwest wind.
Friday Night
Mostly clear, with a low around 75. Calm wind.
Saturday
Sunny, with a high near 96. Calm wind.
Saturday Night
A slight chance of showers and thunderstorms after 1am. Mostly clear, with a low around 73. Calm wind.
Sunday
Mostly sunny, with a high near 95. Light north northeast wind.
Sunday Night
Partly cloudy, with a low around 71. Calm wind.
Labor Day
Sunny, with a high near 92. Calm wind becoming east northeast around 5 mph in the afternoon.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSW Goreville IL
 37.54°N 88.99°W
Last Update:
9:31 am CDT Sep 1, 2026
Forecast Valid:
9am CDT Sep 1, 2026-6pm CDT Sep 7, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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