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

73°F

23°C

Humidity 33%
Wind Speed S 12 mph
Barometer 30.09 in
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 19 Mar 1:47 pm CDT
Extended Forecast for

Benton IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 76. South wind around 8 mph.

    High: 76 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 52. South wind around 7 mph.

    Low: 52 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 81. West southwest wind 7 to 11 mph, with gusts as high as 18 mph.

    High: 81 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 52. West southwest wind 5 to 7 mph becoming calm after midnight.

    Low: 52 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 80. Calm wind becoming northwest around 5 mph in the afternoon.

    High: 80 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 59. South wind 3 to 8 mph.

    Low: 59 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 85. South southwest wind 9 to 15 mph, with gusts as high as 24 mph.

    High: 85 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 43. West wind 11 to 14 mph becoming north after midnight. Winds could gust as high as 23 mph.

    Low: 43 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 59. North wind 9 to 11 mph, with gusts as high as 18 mph.

    High: 59 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 76. South wind around 8 mph.
Tonight
Mostly clear, with a low around 52. South wind around 7 mph.
Friday
Sunny, with a high near 81. West southwest wind 7 to 11 mph, with gusts as high as 18 mph.
Friday Night
Partly cloudy, with a low around 52. West southwest wind 5 to 7 mph becoming calm after midnight.
Saturday
Sunny, with a high near 80. Calm wind becoming northwest around 5 mph in the afternoon.
Saturday Night
Clear, with a low around 59. South wind 3 to 8 mph.
Sunday
Sunny, with a high near 85. South southwest wind 9 to 15 mph, with gusts as high as 24 mph.
Sunday Night
Partly cloudy, with a low around 43. West wind 11 to 14 mph becoming north after midnight. Winds could gust as high as 23 mph.
Monday
Mostly sunny, with a high near 59. North wind 9 to 11 mph, with gusts as high as 18 mph.
Monday Night
Partly cloudy, with a low around 39. East northeast wind around 6 mph.
Tuesday
Partly sunny, with a high near 61. Southeast wind around 6 mph.
Tuesday Night
Mostly cloudy, with a low around 43. East wind 3 to 5 mph.
Wednesday
Mostly sunny, with a high near 71. South southeast wind 6 to 9 mph.
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:
3:57 pm CDT Mar 19, 2026
Forecast Valid:
4pm CDT Mar 19, 2026-6pm CDT Mar 25, 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