National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Marion - Williamson County Regional Airport (KMWA)

Lat: 37.77°NLon: 89.01°WElev: 486ft.

Fair

82°F

28°C

Humidity 30%
Wind Speed W 8 G 18 mph
Barometer 29.90 in
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 20 Mar 2:45 pm CDT
Extended Forecast for

Benton IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 84. West southwest wind around 10 mph.

    High: 84 °F

    Sunny

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming clear, with a low around 54. Southwest wind 5 to 7 mph becoming calm in the evening.

    Low: 54 °F

    Decreasing
    Clouds

  • Saturday

    Saturday: Sunny, with a high near 82. Light and variable wind becoming east northeast around 5 mph in the afternoon.

    High: 82 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 62. Calm wind becoming south southwest 5 to 8 mph in the evening.

    Low: 62 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 85. South southwest wind 9 to 14 mph, with gusts as high as 22 mph.

    High: 85 °F

    Sunny

  • Sunday Night

    Sunday Night: A 20 percent chance of showers before 1am. Partly cloudy, with a low around 42. West wind around 14 mph becoming north in the evening. Winds could gust as high as 23 mph.

    Low: 42 °F

    Slight Chance
    Showers

  • Monday

    Monday: Sunny, with a high near 59. North northeast wind 9 to 11 mph, with gusts as high as 20 mph.

    High: 59 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 39. East northeast wind 3 to 6 mph.

    Low: 39 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 61. South wind around 6 mph.

    High: 61 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 84. West southwest wind around 10 mph.
Tonight
Mostly cloudy, then gradually becoming clear, with a low around 54. Southwest wind 5 to 7 mph becoming calm in the evening.
Saturday
Sunny, with a high near 82. Light and variable wind becoming east northeast around 5 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 62. Calm wind becoming south southwest 5 to 8 mph in the evening.
Sunday
Sunny, with a high near 85. South southwest wind 9 to 14 mph, with gusts as high as 22 mph.
Sunday Night
A 20 percent chance of showers before 1am. Partly cloudy, with a low around 42. West wind around 14 mph becoming north in the evening. Winds could gust as high as 23 mph.
Monday
Sunny, with a high near 59. North northeast wind 9 to 11 mph, with gusts as high as 20 mph.
Monday Night
Partly cloudy, with a low around 39. East northeast wind 3 to 6 mph.
Tuesday
Partly sunny, with a high near 61. South wind around 6 mph.
Tuesday Night
A slight chance of showers after 1am. Mostly cloudy, with a low around 44. Light and variable wind becoming east around 5 mph after midnight.
Wednesday
A slight chance of showers. Mostly cloudy, with a high near 68. East northeast wind 6 to 9 mph becoming south southeast in the afternoon.
Wednesday Night
Partly cloudy, with a low around 51. South southeast wind 6 to 8 mph.
Thursday
A slight chance of showers and thunderstorms. Sunny, with a high near 79. South wind 10 to 15 mph, with gusts as high as 23 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Benton IL
 38°N 88.93°W
Last Update:
1:26 pm CDT Mar 20, 2026
Forecast Valid:
4pm CDT Mar 20, 2026-6pm CDT Mar 26, 2026
 
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Additional Resources

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Chance of Precipitation