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.

Mostly Cloudy

77°F

25°C

Humidity 47%
Wind Speed S 17 mph
Barometer 30.13 in
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 12 Apr 11:47 am CDT
Extended Forecast for

Benton IL

  • Today

    Today: Partly sunny, with a high near 82. South southwest wind 14 to 18 mph, with gusts as high as 26 mph.

    High: 82 °F

    Partly Sunny

  • Tonight

    Tonight: A slight chance of showers, then a chance of showers and thunderstorms after 10pm. Mostly cloudy, with a low around 66. South southwest wind 15 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 50%.

    Low: 66 °F

    Chance
    Showers then
    Chance
    T-storms

  • Monday

    Monday: A slight chance of thunderstorms before 7am. Mostly sunny, with a high near 83. South southwest wind 14 to 18 mph, with gusts as high as 25 mph. Chance of precipitation is 10%.

    High: 83 °F

    Slight Chance
    T-storms then
    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 69. South southwest wind 13 to 16 mph, with gusts as high as 24 mph.

    Low: 69 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 86. South southwest wind 11 to 17 mph, with gusts as high as 25 mph.

    High: 86 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 69. South southwest wind 10 to 14 mph, with gusts as high as 22 mph.

    Low: 69 °F

    Slight Chance
    T-storms

  • Wednesday

    Wednesday: A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 85. South southwest wind 10 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 50%.

    High: 85 °F

    Chance
    Showers then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 65. South southwest wind around 10 mph, with gusts as high as 20 mph.

    Low: 65 °F

    Chance
    T-storms then
    Showers
    Likely

  • Thursday

    Thursday: A chance of showers and thunderstorms. Partly sunny, with a high near 82. Southwest wind 8 to 11 mph.

    High: 82 °F

    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

Today
Partly sunny, with a high near 82. South southwest wind 14 to 18 mph, with gusts as high as 26 mph.
Tonight
A slight chance of showers, then a chance of showers and thunderstorms after 10pm. Mostly cloudy, with a low around 66. South southwest wind 15 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 50%.
Monday
A slight chance of thunderstorms before 7am. Mostly sunny, with a high near 83. South southwest wind 14 to 18 mph, with gusts as high as 25 mph. Chance of precipitation is 10%.
Monday Night
Partly cloudy, with a low around 69. South southwest wind 13 to 16 mph, with gusts as high as 24 mph.
Tuesday
A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 86. South southwest wind 11 to 17 mph, with gusts as high as 25 mph.
Tuesday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 69. South southwest wind 10 to 14 mph, with gusts as high as 22 mph.
Wednesday
A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 85. South southwest wind 10 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 50%.
Wednesday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 65. South southwest wind around 10 mph, with gusts as high as 20 mph.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 82. Southwest wind 8 to 11 mph.
Thursday Night
A slight chance of showers and thunderstorms before 1am. Mostly clear, with a low around 62. South southwest wind 3 to 6 mph.
Friday
A chance of showers and thunderstorms. Mostly sunny, with a high near 87. South southwest wind 5 to 13 mph, with gusts as high as 20 mph.
Friday Night
A chance of showers. Mostly cloudy, with a low around 65. South wind around 9 mph.
Saturday
A chance of showers and thunderstorms. Partly sunny, with a high near 80. South southwest wind 10 to 15 mph, with gusts as high as 21 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:
11:31 am CDT Apr 12, 2026
Forecast Valid:
11am CDT Apr 12, 2026-6pm CDT Apr 18, 2026
 
Forecast Discussion
 
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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