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

70°F

21°C

Humidity 64%
Wind Speed Calm
Barometer 30.30 in
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 11 Apr 1:47 pm CDT
Extended Forecast for

Benton IL

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 75. Southeast wind around 5 mph.

    High: 75 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 61. Southeast wind 3 to 6 mph.

    Low: 61 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 82. South southwest wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 26 mph.

    High: 82 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A slight chance of showers, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 67. South wind 14 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 60%.

    Low: 67 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Monday

    Monday: A chance of showers and thunderstorms before 7am, then a chance of showers between 7am and 1pm. Mostly sunny, with a high near 83. South southwest wind 15 to 18 mph, with gusts as high as 26 mph. Chance of precipitation is 30%.

    High: 83 °F

    Chance
    Showers

  • Monday Night

    Monday Night: Partly cloudy, with a low around 69. South southwest wind 13 to 15 mph, with gusts as high as 24 mph.

    Low: 69 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 86. South southwest wind 11 to 18 mph, with gusts as high as 25 mph.

    High: 86 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of showers, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 70. South southwest wind 11 to 14 mph, with gusts as high as 22 mph.

    Low: 70 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Wednesday

    Wednesday: A chance of showers and thunderstorms. Partly sunny, with a high near 83. South southwest wind 11 to 15 mph, with gusts as high as 23 mph.

    High: 83 °F

    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 75. Southeast wind around 5 mph.
Tonight
Partly cloudy, with a low around 61. Southeast wind 3 to 6 mph.
Sunday
Mostly sunny, with a high near 82. South southwest wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 26 mph.
Sunday Night
A slight chance of showers, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 67. South wind 14 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 60%.
Monday
A chance of showers and thunderstorms before 7am, then a chance of showers between 7am and 1pm. Mostly sunny, with a high near 83. South southwest wind 15 to 18 mph, with gusts as high as 26 mph. Chance of precipitation is 30%.
Monday Night
Partly cloudy, with a low around 69. South southwest wind 13 to 15 mph, with gusts as high as 24 mph.
Tuesday
Mostly sunny, with a high near 86. South southwest wind 11 to 18 mph, with gusts as high as 25 mph.
Tuesday Night
A slight chance of showers, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 70. South southwest wind 11 to 14 mph, with gusts as high as 22 mph.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 83. South southwest wind 11 to 15 mph, with gusts as high as 23 mph.
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 7 to 10 mph.
Thursday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 81. Southwest wind 7 to 10 mph, with gusts as high as 18 mph.
Thursday Night
A slight chance of showers. Mostly clear, with a low around 62. South wind around 6 mph.
Friday
A chance of showers and thunderstorms. Partly sunny, with a high near 85. South southwest wind 6 to 13 mph, with gusts as high as 20 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:
1:27 pm CDT Apr 11, 2026
Forecast Valid:
2pm CDT Apr 11, 2026-6pm CDT Apr 17, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation