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.

A Few Clouds

75°F

24°C

Humidity 61%
Wind Speed SW 15 G 23 mph
Barometer 29.71 in
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 15 Nov 12:45 pm CST
Extended Forecast for

Benton IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 78. Southwest wind 9 to 15 mph, with gusts as high as 24 mph.

    High: 78 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 46. West southwest wind 6 to 8 mph becoming north after midnight.

    Low: 46 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 60. North northwest wind 6 to 9 mph.

    High: 60 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 35. Calm wind.

    Low: 35 °F

    Clear

  • Monday

    Monday: A 20 percent chance of showers after noon. Mostly sunny, with a high near 61. Calm wind becoming southeast 5 to 9 mph in the morning.

    High: 61 °F

    Sunny then
    Slight Chance
    Showers

  • Monday Night

    Monday Night: Showers likely, then showers and possibly a thunderstorm after midnight. Low around 47. Southeast wind 6 to 9 mph. Chance of precipitation is 80%.

    Low: 47 °F

    Showers

  • Tuesday

    Tuesday: A chance of showers and thunderstorms. Partly sunny, with a high near 73. South southwest wind 9 to 13 mph, with gusts as high as 18 mph. Chance of precipitation is 50%.

    High: 73 °F

    Chance
    T-storms then
    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A chance of showers. Mostly cloudy, with a low around 52. South wind 6 to 8 mph becoming north after midnight.

    Low: 52 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers. Mostly cloudy, with a high near 68. East northeast wind 6 to 8 mph becoming southwest in the afternoon.

    High: 68 °F

    Chance
    Showers

Detailed Forecast

This Afternoon
Sunny, with a high near 78. Southwest wind 9 to 15 mph, with gusts as high as 24 mph.
Tonight
Partly cloudy, with a low around 46. West southwest wind 6 to 8 mph becoming north after midnight.
Sunday
Sunny, with a high near 60. North northwest wind 6 to 9 mph.
Sunday Night
Clear, with a low around 35. Calm wind.
Monday
A 20 percent chance of showers after noon. Mostly sunny, with a high near 61. Calm wind becoming southeast 5 to 9 mph in the morning.
Monday Night
Showers likely, then showers and possibly a thunderstorm after midnight. Low around 47. Southeast wind 6 to 9 mph. Chance of precipitation is 80%.
Tuesday
A chance of showers and thunderstorms. Partly sunny, with a high near 73. South southwest wind 9 to 13 mph, with gusts as high as 18 mph. Chance of precipitation is 50%.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 52. South wind 6 to 8 mph becoming north after midnight.
Wednesday
A chance of showers. Mostly cloudy, with a high near 68. East northeast wind 6 to 8 mph becoming southwest in the afternoon.
Wednesday Night
Showers likely, mainly after midnight. Mostly cloudy, with a low around 54. East southeast wind 3 to 6 mph.
Thursday
Showers and possibly a thunderstorm. Cloudy, with a high near 68. South southeast wind 6 to 11 mph.
Thursday Night
Showers and possibly a thunderstorm. Mostly cloudy, with a low around 55. South wind 9 to 11 mph.
Friday
Showers likely. Partly sunny, with a high near 66. Southwest wind 11 to 15 mph, with gusts as high as 20 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Benton IL
 38°N 88.93°W
Last Update:
12:06 pm CST Nov 15, 2025
Forecast Valid:
12pm CST Nov 15, 2025-6pm CST Nov 21, 2025
 
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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