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

Marion - Williamson County Regional Airport (KMWA)

Lat: 37.77°NLon: 89.01°WElev: 486ft.

Fair

52°F

11°C

Humidity 94%
Wind Speed Calm
Barometer 29.98 in
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 12 Oct 6:45 am CDT
Extended Forecast for

Benton IL

  • Today

    Today: Sunny, with a high near 80. Calm wind becoming east southeast around 6 mph in the afternoon.

    High: 80 °F

    Sunny

  • Tonight

    Tonight: Patchy fog after 4am. Otherwise, clear, with a low around 51. East southeast wind around 5 mph becoming calm in the evening.

    Low: 51 °F

    Clear then
    Patchy Fog

  • Columbus Day

    Columbus Day: Patchy fog before 8am. Otherwise, sunny, with a high near 82. Calm wind becoming east around 5 mph in the afternoon.

    High: 82 °F

    Patchy Fog
    then Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 56. Calm wind.

    Low: 56 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 83. Calm wind becoming east northeast around 6 mph in the afternoon.

    High: 83 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 57. Light northeast wind.

    Low: 57 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 79. Northeast wind 3 to 8 mph.

    High: 79 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 52. Northeast wind around 6 mph becoming calm in the evening.

    Low: 52 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 76. East wind 5 to 9 mph.

    High: 76 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 80. Calm wind becoming east southeast around 6 mph in the afternoon.
Tonight
Patchy fog after 4am. Otherwise, clear, with a low around 51. East southeast wind around 5 mph becoming calm in the evening.
Columbus Day
Patchy fog before 8am. Otherwise, sunny, with a high near 82. Calm wind becoming east around 5 mph in the afternoon.
Monday Night
Mostly clear, with a low around 56. Calm wind.
Tuesday
Sunny, with a high near 83. Calm wind becoming east northeast around 6 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 57. Light northeast wind.
Wednesday
Sunny, with a high near 79. Northeast wind 3 to 8 mph.
Wednesday Night
Clear, with a low around 52. Northeast wind around 6 mph becoming calm in the evening.
Thursday
Sunny, with a high near 76. East wind 5 to 9 mph.
Thursday Night
Mostly clear, with a low around 52. East southeast wind 3 to 6 mph.
Friday
Mostly sunny, with a high near 81. South wind 5 to 11 mph.
Friday Night
Partly cloudy, with a low around 60. South southeast wind 6 to 8 mph.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 80. South southwest wind 8 to 13 mph, with gusts as high as 18 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Benton IL
 38°N 88.93°W
Last Update:
6:16 am CDT Oct 12, 2025
Forecast Valid:
7am CDT Oct 12, 2025-6pm CDT Oct 18, 2025
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation