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

81°F

27°C

Humidity 30%
Wind Speed NW 6 mph
Barometer 30.15 in
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 4 Oct 2:45 pm CDT
Extended Forecast for

Benton IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 80. North wind around 8 mph.

    High: 80 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 52. Calm wind becoming north around 5 mph in the evening.

    Low: 52 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 77. Northeast wind 5 to 10 mph.

    High: 77 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 46. Northeast wind around 5 mph becoming calm in the evening.

    Low: 46 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 79. Calm wind becoming southeast around 5 mph.

    High: 79 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 49. Calm wind.

    Low: 49 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 86. Calm wind becoming west southwest 5 to 8 mph in the morning.

    High: 86 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 54. West southwest wind around 5 mph becoming calm in the evening.

    Low: 54 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 85. Calm wind becoming northeast 5 to 7 mph in the morning.

    High: 85 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 80. North wind around 8 mph.
Tonight
Clear, with a low around 52. Calm wind becoming north around 5 mph in the evening.
Monday
Sunny, with a high near 77. Northeast wind 5 to 10 mph.
Monday Night
Clear, with a low around 46. Northeast wind around 5 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 79. Calm wind becoming southeast around 5 mph.
Tuesday Night
Clear, with a low around 49. Calm wind.
Wednesday
Sunny, with a high near 86. Calm wind becoming west southwest 5 to 8 mph in the morning.
Wednesday Night
Clear, with a low around 54. West southwest wind around 5 mph becoming calm in the evening.
Thursday
Sunny, with a high near 85. Calm wind becoming northeast 5 to 7 mph in the morning.
Thursday Night
Clear, with a low around 54. East northeast wind around 5 mph becoming calm in the evening.
Friday
Sunny, with a high near 84. Calm wind becoming southeast 5 to 7 mph in the morning.
Friday Night
Mostly clear, with a low around 54. East southeast wind around 5 mph becoming calm in the evening.
Saturday
Mostly sunny, with a high near 83. Light east southeast wind becoming southeast 5 to 10 mph in the morning.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Benton IL
 38.02°N 88.9°W
Last Update:
1:26 pm CDT Oct 4, 2026
Forecast Valid:
2pm CDT Oct 4, 2026-6pm CDT Oct 10, 2026
 
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Additional Resources

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Chance of Precipitation