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

57°F

14°C

Humidity 29%
Wind Speed S 8 mph
Barometer 30.13 in
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Last update 13 Feb 5:45 pm CST
Extended Forecast for

Benton IL

  • Tonight

    Tonight: Increasing clouds, with a low around 37. Light south wind.

    Low: 37 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Showers, mainly after noon. High near 54. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 90%.

    High: 54 °F

    Chance
    Showers then
    Showers

  • Saturday Night

    Saturday Night: Showers. Low around 46. East wind around 7 mph. Chance of precipitation is 100%.

    Low: 46 °F

    Showers

  • Sunday

    Sunday: A 40 percent chance of showers before noon. Mostly cloudy, with a high near 55. North northeast wind 6 to 10 mph.

    High: 55 °F

    Chance
    Showers then
    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 39. North northeast wind around 5 mph becoming calm in the evening.

    Low: 39 °F

    Partly Cloudy

  • Washington's Birthday

    Washington's Birthday: Mostly sunny, with a high near 61. Calm wind becoming south southeast around 6 mph in the afternoon.

    High: 61 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 44. Light south wind.

    Low: 44 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 65. South wind 5 to 14 mph, with gusts as high as 21 mph.

    High: 65 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 56. South southwest wind around 14 mph, with gusts as high as 23 mph.

    Low: 56 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Increasing clouds, with a low around 37. Light south wind.
Saturday
Showers, mainly after noon. High near 54. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 90%.
Saturday Night
Showers. Low around 46. East wind around 7 mph. Chance of precipitation is 100%.
Sunday
A 40 percent chance of showers before noon. Mostly cloudy, with a high near 55. North northeast wind 6 to 10 mph.
Sunday Night
Partly cloudy, with a low around 39. North northeast wind around 5 mph becoming calm in the evening.
Washington's Birthday
Mostly sunny, with a high near 61. Calm wind becoming south southeast around 6 mph in the afternoon.
Monday Night
Mostly cloudy, with a low around 44. Light south wind.
Tuesday
Mostly cloudy, with a high near 65. South wind 5 to 14 mph, with gusts as high as 21 mph.
Tuesday Night
Mostly cloudy, with a low around 56. South southwest wind around 14 mph, with gusts as high as 23 mph.
Wednesday
Partly sunny, with a high near 71. Southwest wind 9 to 14 mph, with gusts as high as 22 mph.
Wednesday Night
Mostly cloudy, with a low around 51. South southwest wind around 8 mph.
Thursday
A slight chance of showers. Partly sunny, with a high near 69. South southwest wind 7 to 13 mph, with gusts as high as 22 mph.
Thursday Night
A slight chance of showers. Partly cloudy, with a low around 44. South southwest wind 8 to 11 mph becoming west after midnight. Winds could gust as high as 20 mph.
Friday
Mostly sunny, with a high near 58. West wind 8 to 10 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Benton IL
 38°N 88.93°W
Last Update:
4:57 pm CST Feb 13, 2026
Forecast Valid:
5pm CST Feb 13, 2026-6pm CST Feb 20, 2026
 
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Additional Resources

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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