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

26°F

-3°C

Humidity 92%
Wind Speed S 7 mph
Barometer 29.85 in
Dewpoint 24°F (-4°C)
Visibility 7.00 mi
Wind Chill18°F (-8°C)
Last update 6 Feb 3:55 am CST
Extended Forecast for

Benton IL

  • Today

    Today: Mostly sunny, with a high near 46. West southwest wind 8 to 15 mph becoming north northwest in the morning. Winds could gust as high as 24 mph.

    High: 46 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 22. North northwest wind 6 to 10 mph.

    Low: 22 °F

    Mostly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 34. North northeast wind around 6 mph becoming calm in the afternoon.

    High: 34 °F

    Sunny

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 23. Calm wind becoming south southeast around 6 mph after midnight.

    Low: 23 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Mostly sunny, with a high near 49. South southwest wind 5 to 8 mph.

    High: 49 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 31. Light and variable wind.

    Low: 31 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 57. Light west southwest wind.

    High: 57 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 41. South wind 3 to 6 mph.

    Low: 41 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A chance of showers, mainly after noon. Mostly cloudy, with a high near 64. South southwest wind 6 to 9 mph.

    High: 64 °F

    Chance
    Showers

Detailed Forecast

Today
Mostly sunny, with a high near 46. West southwest wind 8 to 15 mph becoming north northwest in the morning. Winds could gust as high as 24 mph.
Tonight
Mostly cloudy, with a low around 22. North northwest wind 6 to 10 mph.
Saturday
Sunny, with a high near 34. North northeast wind around 6 mph becoming calm in the afternoon.
Saturday Night
Increasing clouds, with a low around 23. Calm wind becoming south southeast around 6 mph after midnight.
Sunday
Mostly sunny, with a high near 49. South southwest wind 5 to 8 mph.
Sunday Night
Mostly clear, with a low around 31. Light and variable wind.
Monday
Sunny, with a high near 57. Light west southwest wind.
Monday Night
Partly cloudy, with a low around 41. South wind 3 to 6 mph.
Tuesday
A chance of showers, mainly after noon. Mostly cloudy, with a high near 64. South southwest wind 6 to 9 mph.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 40. Southwest wind around 8 mph becoming northwest after midnight.
Wednesday
A slight chance of showers. Mostly cloudy, with a high near 53. North northwest wind 7 to 10 mph.
Wednesday Night
A slight chance of showers. Mostly cloudy, with a low around 32. North wind around 6 mph.
Thursday
A slight chance of showers. Mostly cloudy, with a high near 46. North wind 5 to 7 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Benton IL
 38°N 88.93°W
Last Update:
3:21 am CST Feb 6, 2026
Forecast Valid:
4am CST Feb 6, 2026-6pm CST Feb 12, 2026
 
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Additional Resources

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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