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 43%
Wind Speed Calm
Barometer 30.27 in
Dewpoint 9°F (-13°C)
Visibility 10.00 mi
Last update 28 Jan 4:47 pm CST
Extended Forecast for

Benton IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 12. Calm wind.

    Low: 12 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 27. Calm wind becoming northeast around 6 mph in the morning.

    High: 27 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: A 20 percent chance of snow showers. Mostly cloudy, with a low around 11. North northeast wind 3 to 6 mph.

    Low: 11 °F

    Slight Chance
    Snow Showers

  • Friday

    Friday: Partly sunny, with a high near 21. North wind 6 to 10 mph.

    High: 21 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 5. North wind 7 to 9 mph.

    Low: 5 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 17. Northwest wind 8 to 13 mph, with gusts as high as 20 mph.

    High: 17 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 4. Northwest wind 3 to 7 mph.

    Low: 4 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 26. Light and variable wind becoming west around 6 mph in the morning.

    High: 26 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 11. South southwest wind around 5 mph.

    Low: 11 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 12. Calm wind.
Thursday
Mostly cloudy, with a high near 27. Calm wind becoming northeast around 6 mph in the morning.
Thursday Night
A 20 percent chance of snow showers. Mostly cloudy, with a low around 11. North northeast wind 3 to 6 mph.
Friday
Partly sunny, with a high near 21. North wind 6 to 10 mph.
Friday Night
Mostly cloudy, with a low around 5. North wind 7 to 9 mph.
Saturday
Mostly sunny, with a high near 17. Northwest wind 8 to 13 mph, with gusts as high as 20 mph.
Saturday Night
Partly cloudy, with a low around 4. Northwest wind 3 to 7 mph.
Sunday
Partly sunny, with a high near 26. Light and variable wind becoming west around 6 mph in the morning.
Sunday Night
Mostly cloudy, with a low around 11. South southwest wind around 5 mph.
Monday
Partly sunny, with a high near 34. Southwest wind 5 to 8 mph.
Monday Night
Partly cloudy, with a low around 20. Light southwest wind.
Tuesday
Partly sunny, with a high near 36. Southwest wind 3 to 6 mph.
Tuesday Night
A chance of rain and snow showers. Mostly cloudy, with a low around 26. South wind around 6 mph.
Wednesday
A chance of showers. Mostly cloudy, with a high near 37. South wind around 7 mph becoming west southwest in the afternoon.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Benton IL
 38°N 88.93°W
Last Update:
5:06 pm CST Jan 28, 2026
Forecast Valid:
5pm CST Jan 28, 2026-6pm CST Feb 4, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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