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

16°F

-9°C

Humidity 86%
Wind Speed Calm
Barometer 30.27 in
Dewpoint 12°F (-11°C)
Visibility 10.00 mi
Last update 5 Feb 7:47 am CST
Extended Forecast for

Benton IL

  • Today

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

    High: 34 °F

    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy, with a low around 28. South wind around 6 mph becoming west after midnight.

    Low: 28 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 48. West southwest wind 6 to 13 mph becoming north northwest in the afternoon. Winds could gust as high as 20 mph.

    High: 48 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 24. North northwest wind 6 to 10 mph.

    Low: 24 °F

    Mostly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 35. North northeast wind around 6 mph becoming light and variable in the afternoon.

    High: 35 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 24. Calm wind becoming south southeast around 6 mph after midnight.

    Low: 24 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 52. South southwest wind 5 to 8 mph.

    High: 52 °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. Calm wind becoming south southwest around 5 mph.

    High: 57 °F

    Sunny

Detailed Forecast

Today
Mostly cloudy, with a high near 34. Calm wind becoming south southwest 5 to 8 mph in the morning.
Tonight
Mostly cloudy, with a low around 28. South wind around 6 mph becoming west after midnight.
Friday
Mostly sunny, with a high near 48. West southwest wind 6 to 13 mph becoming north northwest in the afternoon. Winds could gust as high as 20 mph.
Friday Night
Mostly cloudy, with a low around 24. North northwest wind 6 to 10 mph.
Saturday
Sunny, with a high near 35. North northeast wind around 6 mph becoming light and variable in the afternoon.
Saturday Night
Mostly cloudy, with a low around 24. Calm wind becoming south southeast around 6 mph after midnight.
Sunday
Mostly sunny, with a high near 52. 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. Calm wind becoming south southwest around 5 mph.
Monday Night
Partly cloudy, with a low around 42. South southwest wind 3 to 6 mph.
Tuesday
A slight chance of showers. Mostly cloudy, with a high near 62. South southwest wind 6 to 9 mph.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 43. South southwest wind around 7 mph.
Wednesday
A chance of showers. Mostly cloudy, with a high near 57. West wind 7 to 9 mph becoming south in the afternoon.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Benton IL
 38°N 88.93°W
Last Update:
5:12 am CST Feb 5, 2026
Forecast Valid:
8am CST Feb 5, 2026-6pm CST Feb 11, 2026
 
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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