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.

Overcast

28°F

-2°C

Humidity 69%
Wind Speed N 14 mph
Barometer 30.35 in
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Wind Chill17°F (-8°C)
Last update 4 Feb 12:45 pm CST
Extended Forecast for

Benton IL

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 30. North wind around 8 mph.

    High: 30 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 14. North wind 5 to 7 mph becoming calm after midnight.

    Low: 14 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 34. Calm wind becoming south southwest 5 to 8 mph in the morning.

    High: 34 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 27. West southwest wind around 6 mph.

    Low: 27 °F

    Decreasing
    Clouds

  • Friday

    Friday: Sunny, with a high near 49. West southwest wind 6 to 13 mph becoming north northwest in the afternoon. Winds could gust as high as 21 mph.

    High: 49 °F

    Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 26. North northwest wind 6 to 9 mph.

    Low: 26 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 36. North northeast wind around 6 mph becoming east in the afternoon.

    High: 36 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 24. Southeast wind 3 to 6 mph.

    Low: 24 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 51. South southwest wind 5 to 8 mph.

    High: 51 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Partly sunny, with a high near 30. North wind around 8 mph.
Tonight
Mostly cloudy, with a low around 14. North wind 5 to 7 mph becoming calm after midnight.
Thursday
Mostly cloudy, with a high near 34. Calm wind becoming south southwest 5 to 8 mph in the morning.
Thursday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 27. West southwest wind around 6 mph.
Friday
Sunny, with a high near 49. West southwest wind 6 to 13 mph becoming north northwest in the afternoon. Winds could gust as high as 21 mph.
Friday Night
Mostly cloudy, with a low around 26. North northwest wind 6 to 9 mph.
Saturday
Mostly sunny, with a high near 36. North northeast wind around 6 mph becoming east in the afternoon.
Saturday Night
Mostly cloudy, with a low around 24. Southeast wind 3 to 6 mph.
Sunday
Partly sunny, with a high near 51. 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 55. Calm wind becoming south southwest around 6 mph in the afternoon.
Monday Night
Mostly clear, with a low around 39. South southwest wind 3 to 5 mph.
Tuesday
A slight chance of showers. Partly sunny, with a high near 60. South southwest wind 5 to 8 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Benton IL
 38°N 88.93°W
Last Update:
1:12 pm CST Feb 4, 2026
Forecast Valid:
1pm CST Feb 4, 2026-6pm CST Feb 10, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation