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

45°F

7°C

Humidity 57%
Wind Speed N 13 mph
Barometer 30.35 in
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Wind Chill39°F (4°C)
Last update 1 Mar 11:47 am CST
Extended Forecast for

Benton IL

  • Today

    Today: Partly sunny, with a high near 52. Northeast wind around 11 mph, with gusts as high as 18 mph.

    High: 52 °F

    Partly Sunny

  • Tonight

    Tonight: Rain, mainly after 10pm. Low around 37. East northeast wind 7 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 100%.

    Low: 37 °F

    Rain

  • Monday

    Monday: Rain, mainly before 8am, then a slight chance of drizzle after 5pm. High near 48. East wind 7 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.

    High: 48 °F

    Rain then
    Slight Chance
    Rain

  • Monday Night

    Monday Night: Showers likely after midnight. Cloudy, with a low around 44. Calm wind becoming south 5 to 8 mph after midnight. Chance of precipitation is 60%.

    Low: 44 °F

    Cloudy then
    Showers
    Likely

  • Tuesday

    Tuesday: A 40 percent chance of showers. Mostly cloudy, with a high near 70. South southwest wind 9 to 15 mph, with gusts as high as 23 mph.

    High: 70 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A 50 percent chance of showers, mainly after midnight. Mostly cloudy, with a low around 59. South wind 6 to 8 mph.

    Low: 59 °F

    Slight Chance
    Showers then
    Chance
    Showers

  • Wednesday

    Wednesday: Showers likely, with thunderstorms also possible after noon. Mostly cloudy, with a high near 71. South southwest wind 9 to 14 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.

    High: 71 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 56. South southwest wind 7 to 9 mph.

    Low: 56 °F

    Showers
    Likely

  • Thursday

    Thursday: Showers likely. Mostly cloudy, with a high near 71. South southwest wind 7 to 11 mph.

    High: 71 °F

    Showers
    Likely

Detailed Forecast

Today
Partly sunny, with a high near 52. Northeast wind around 11 mph, with gusts as high as 18 mph.
Tonight
Rain, mainly after 10pm. Low around 37. East northeast wind 7 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 100%.
Monday
Rain, mainly before 8am, then a slight chance of drizzle after 5pm. High near 48. East wind 7 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.
Monday Night
Showers likely after midnight. Cloudy, with a low around 44. Calm wind becoming south 5 to 8 mph after midnight. Chance of precipitation is 60%.
Tuesday
A 40 percent chance of showers. Mostly cloudy, with a high near 70. South southwest wind 9 to 15 mph, with gusts as high as 23 mph.
Tuesday Night
A 50 percent chance of showers, mainly after midnight. Mostly cloudy, with a low around 59. South wind 6 to 8 mph.
Wednesday
Showers likely, with thunderstorms also possible after noon. Mostly cloudy, with a high near 71. South southwest wind 9 to 14 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.
Wednesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 56. South southwest wind 7 to 9 mph.
Thursday
Showers likely. Mostly cloudy, with a high near 71. South southwest wind 7 to 11 mph.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 59. South wind around 8 mph.
Friday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 75. South southwest wind 9 to 14 mph, with gusts as high as 22 mph.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 56. South wind around 10 mph, with gusts as high as 18 mph.
Saturday
Showers likely. Cloudy, with a high near 68. South southwest wind 8 to 11 mph, with gusts as high as 18 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:
11:02 am CST Mar 1, 2026
Forecast Valid:
11am CST Mar 1, 2026-6pm CST Mar 7, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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