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 38%
Wind Speed S 6 mph
Barometer 30.26 in
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 26 Oct 4:45 pm CDT
Extended Forecast for

Benton IL

  • Tonight

    Tonight: Partly cloudy, with a low around 49. Calm wind.

    Low: 49 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 77. Calm wind becoming south around 6 mph in the afternoon.

    High: 77 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 50. Calm wind.

    Low: 50 °F

    Decreasing
    Clouds

  • Wednesday

    Wednesday: Sunny, with a high near 79. Calm wind becoming south 5 to 8 mph in the afternoon.

    High: 79 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 51. Light south wind.

    Low: 51 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 82. Light south wind becoming south southwest 5 to 10 mph in the morning.

    High: 82 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 53. South wind around 5 mph becoming calm in the evening.

    Low: 53 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 81. Calm wind becoming south 5 to 7 mph in the afternoon.

    High: 81 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 57. Calm wind.

    Low: 57 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 49. Calm wind.
Tuesday
Partly sunny, with a high near 77. Calm wind becoming south around 6 mph in the afternoon.
Tuesday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 50. Calm wind.
Wednesday
Sunny, with a high near 79. Calm wind becoming south 5 to 8 mph in the afternoon.
Wednesday Night
Clear, with a low around 51. Light south wind.
Thursday
Sunny, with a high near 82. Light south wind becoming south southwest 5 to 10 mph in the morning.
Thursday Night
Partly cloudy, with a low around 53. South wind around 5 mph becoming calm in the evening.
Friday
Partly sunny, with a high near 81. Calm wind becoming south 5 to 7 mph in the afternoon.
Friday Night
Mostly cloudy, with a low around 57. Calm wind.
Saturday
A chance of showers after 1pm. Mostly cloudy, with a high near 76. Calm wind becoming south southeast 5 to 7 mph in the afternoon.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 58. Southeast wind around 5 mph becoming calm in the evening.
Sunday
A chance of showers. Mostly cloudy, with a high near 76. Calm wind becoming south 5 to 7 mph in the morning.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 58. Light southeast wind.
Monday
A chance of showers. Partly sunny, with a high near 76. Calm wind becoming south southwest 5 to 9 mph in the morning.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Benton IL
 38°N 88.93°W
Last Update:
1:31 pm CDT Oct 26, 2026
Forecast Valid:
5pm CDT Oct 26, 2026-6pm CST Nov 2, 2026
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation