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.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

Benton IL

  • Today

    Today: Partly sunny, with a high near 33. West northwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 33 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 23. North northwest wind 5 to 8 mph becoming calm in the evening.

    Low: 23 °F

    Mostly Cloudy

  • Monday

    Monday: A slight chance of rain between 2pm and 3pm, then a chance of snow. Mostly cloudy, with a high near 36. East wind 3 to 6 mph. Chance of precipitation is 30%.

    High: 36 °F

    Mostly Cloudy
    then Chance
    Rain/Snow

  • Monday Night

    Monday Night: Snow, possibly mixed with sleet before midnight, then a chance of snow. Low around 24. Calm wind becoming north northwest around 6 mph after midnight. Chance of precipitation is 80%.

    Low: 24 °F

    Snow/Sleet
    then Chance
    Snow

  • Tuesday

    Tuesday: Partly sunny, with a high near 34. North northwest wind 5 to 7 mph becoming calm in the afternoon.

    High: 34 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 21. Light and variable wind.

    Low: 21 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 42. South southwest wind 5 to 10 mph.

    High: 42 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 20. South southwest wind 5 to 9 mph becoming north northwest after midnight.

    Low: 20 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 29. North northwest wind 5 to 10 mph.

    High: 29 °F

    Partly Sunny

Detailed Forecast

Today
Partly sunny, with a high near 33. West northwest wind 10 to 15 mph, with gusts as high as 25 mph.
Tonight
Mostly cloudy, with a low around 23. North northwest wind 5 to 8 mph becoming calm in the evening.
Monday
A slight chance of rain between 2pm and 3pm, then a chance of snow. Mostly cloudy, with a high near 36. East wind 3 to 6 mph. Chance of precipitation is 30%.
Monday Night
Snow, possibly mixed with sleet before midnight, then a chance of snow. Low around 24. Calm wind becoming north northwest around 6 mph after midnight. Chance of precipitation is 80%.
Tuesday
Partly sunny, with a high near 34. North northwest wind 5 to 7 mph becoming calm in the afternoon.
Tuesday Night
Mostly clear, with a low around 21. Light and variable wind.
Wednesday
Mostly sunny, with a high near 42. South southwest wind 5 to 10 mph.
Wednesday Night
Mostly cloudy, with a low around 20. South southwest wind 5 to 9 mph becoming north northwest after midnight.
Thursday
Partly sunny, with a high near 29. North northwest wind 5 to 10 mph.
Thursday Night
A chance of snow and freezing rain after midnight. Mostly cloudy, with a low around 18. Light and variable wind.
Friday
A chance of rain, snow, and freezing rain. Mostly cloudy, with a high near 34. Calm wind becoming south southeast around 6 mph in the morning.
Friday Night
A chance of freezing rain. Mostly cloudy, with a low around 26. Calm wind becoming southwest around 5 mph after midnight.
Saturday
Partly sunny, with a high near 42. Southwest wind 5 to 8 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:
3:16 am CST Nov 30, 2025
Forecast Valid:
4am CST Nov 30, 2025-6pm CST Dec 6, 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