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

37°F

3°C

Humidity 54%
Wind Speed W 7 mph
Barometer 29.80 in
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Wind Chill32°F (0°C)
Last update 20 Feb 5:55 am CST
Extended Forecast for

Benton IL

  • Today

    Today: Sunny, with a high near 48. West wind 6 to 16 mph, with gusts as high as 25 mph.

    High: 48 °F

    Sunny

  • Tonight

    Tonight: A slight chance of rain showers before 3am, then a slight chance of snow showers between 3am and 4am, then a slight chance of rain showers after 4am. Increasing clouds, with a low around 32. Light and variable wind. Chance of precipitation is 20%.

    Low: 32 °F

    Partly Cloudy
    then Slight
    Chance
    Rain/Snow

  • Saturday

    Saturday: Mostly sunny, with a high near 44. Northwest wind 5 to 10 mph.

    High: 44 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 24. Northwest wind 8 to 10 mph, with gusts as high as 20 mph.

    Low: 24 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 37. Northwest wind 10 to 18 mph, with gusts as high as 28 mph.

    High: 37 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 18. Northwest wind 11 to 14 mph, with gusts as high as 22 mph.

    Low: 18 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 35. North northwest wind 7 to 14 mph, with gusts as high as 21 mph.

    High: 35 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 18. Northwest wind around 5 mph becoming calm in the evening.

    Low: 18 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 46. Light south southwest wind increasing to 9 to 14 mph in the morning. Winds could gust as high as 21 mph.

    High: 46 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 48. West wind 6 to 16 mph, with gusts as high as 25 mph.
Tonight
A slight chance of rain showers before 3am, then a slight chance of snow showers between 3am and 4am, then a slight chance of rain showers after 4am. Increasing clouds, with a low around 32. Light and variable wind. Chance of precipitation is 20%.
Saturday
Mostly sunny, with a high near 44. Northwest wind 5 to 10 mph.
Saturday Night
Mostly clear, with a low around 24. Northwest wind 8 to 10 mph, with gusts as high as 20 mph.
Sunday
Sunny, with a high near 37. Northwest wind 10 to 18 mph, with gusts as high as 28 mph.
Sunday Night
Mostly clear, with a low around 18. Northwest wind 11 to 14 mph, with gusts as high as 22 mph.
Monday
Sunny, with a high near 35. North northwest wind 7 to 14 mph, with gusts as high as 21 mph.
Monday Night
Mostly clear, with a low around 18. Northwest wind around 5 mph becoming calm in the evening.
Tuesday
Mostly sunny, with a high near 46. Light south southwest wind increasing to 9 to 14 mph in the morning. Winds could gust as high as 21 mph.
Tuesday Night
Mostly cloudy, with a low around 38. South southwest wind around 14 mph, with gusts as high as 24 mph.
Wednesday
A slight chance of showers. Mostly cloudy, with a high near 56. Southwest wind 10 to 15 mph, with gusts as high as 23 mph.
Wednesday Night
A slight chance of showers. Mostly cloudy, with a low around 35. Southwest wind 6 to 9 mph becoming north northwest after midnight.
Thursday
A slight chance of showers. Mostly sunny, with a high near 55. North northwest wind 6 to 9 mph becoming south in the afternoon.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Benton IL
 38°N 88.93°W
Last Update:
3:16 am CST Feb 20, 2026
Forecast Valid:
6am CST Feb 20, 2026-6pm CST Feb 26, 2026
 
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Additional Resources

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Chance of Precipitation