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.

Overcast

46°F

8°C

Humidity 93%
Wind Speed S 12 mph
Barometer 29.99 in
Dewpoint 45°F (7°C)
Visibility 7.00 mi
Wind Chill40°F (4°C)
Last update 17 Feb 8:47 am CST
Extended Forecast for

Benton IL

  • Today

    Today: Mostly cloudy, with a high near 64. South wind 10 to 16 mph, with gusts as high as 28 mph.

    High: 64 °F

    Mostly Cloudy

  • Tonight

    Tonight: A 20 percent chance of rain after 5am. Mostly cloudy, with a low around 56. Breezy, with a south wind 15 to 20 mph, with gusts as high as 32 mph.

    Low: 56 °F

    Breezy.
    Cloudy then
    Slight Chance
    Rain

  • Wednesday

    Wednesday: Mostly sunny, with a high near 73. Southwest wind 7 to 16 mph, with gusts as high as 28 mph.

    High: 73 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers after midnight. Partly cloudy, with a low around 55. South wind around 6 mph.

    Low: 55 °F

    Partly Cloudy
    then Chance
    Showers

  • Thursday

    Thursday: A chance of showers, with thunderstorms also possible after noon. Partly sunny, with a high near 71. South southwest wind 6 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 50%.

    High: 71 °F

    Chance
    Showers then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 40. West wind 10 to 13 mph, with gusts as high as 20 mph.

    Low: 40 °F

    Chance
    T-storms then
    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 54. West wind 7 to 13 mph, with gusts as high as 20 mph.

    High: 54 °F

    Sunny

  • Friday Night

    Friday Night: A slight chance of showers after midnight. Partly cloudy, with a low around 33. Light and variable wind becoming north around 6 mph after midnight.

    Low: 33 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Saturday

    Saturday: A chance of showers, mainly after noon. Mostly sunny, with a high near 47. North northwest wind 6 to 9 mph.

    High: 47 °F

    Chance
    Showers

Detailed Forecast

Today
Mostly cloudy, with a high near 64. South wind 10 to 16 mph, with gusts as high as 28 mph.
Tonight
A 20 percent chance of rain after 5am. Mostly cloudy, with a low around 56. Breezy, with a south wind 15 to 20 mph, with gusts as high as 32 mph.
Wednesday
Mostly sunny, with a high near 73. Southwest wind 7 to 16 mph, with gusts as high as 28 mph.
Wednesday Night
A 30 percent chance of showers after midnight. Partly cloudy, with a low around 55. South wind around 6 mph.
Thursday
A chance of showers, with thunderstorms also possible after noon. Partly sunny, with a high near 71. South southwest wind 6 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 50%.
Thursday Night
A 30 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 40. West wind 10 to 13 mph, with gusts as high as 20 mph.
Friday
Sunny, with a high near 54. West wind 7 to 13 mph, with gusts as high as 20 mph.
Friday Night
A slight chance of showers after midnight. Partly cloudy, with a low around 33. Light and variable wind becoming north around 6 mph after midnight.
Saturday
A chance of showers, mainly after noon. Mostly sunny, with a high near 47. North northwest wind 6 to 9 mph.
Saturday Night
A slight chance of rain and snow showers. Mostly clear, with a low around 27. Northwest wind 7 to 9 mph.
Sunday
Sunny, with a high near 41. Northwest wind 9 to 13 mph, with gusts as high as 20 mph.
Sunday Night
Mostly clear, with a low around 20. North northwest wind 6 to 8 mph.
Monday
Sunny, with a high near 40. North northwest wind 5 to 8 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Benton IL
 38°N 88.93°W
Last Update:
7:26 am CST Feb 17, 2026
Forecast Valid:
9am CST Feb 17, 2026-6pm CST Feb 23, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation