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.

Mostly Cloudy

48°F

9°C

Humidity 50%
Wind Speed SW 16 G 25 mph
Barometer 29.94 in
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Wind Chill42°F (6°C)
Last update 13 Jan 10:45 am CST
Extended Forecast for

Benton IL

  • Today

    Today: Partly sunny, with a high near 61. Southwest wind 9 to 15 mph, with gusts as high as 24 mph.

    High: 61 °F

    Partly Sunny

  • Tonight

    Tonight: A chance of showers before 2am, then a slight chance of showers after 5am. Mostly cloudy, with a low around 40. Southwest wind 6 to 8 mph becoming northwest after midnight. Chance of precipitation is 50%.

    Low: 40 °F

    Chance
    Showers

  • Wednesday

    Wednesday: Mostly cloudy, then gradually becoming sunny, with a temperature falling to around 33 by 5pm. Breezy, with a north northwest wind 9 to 14 mph increasing to 15 to 20 mph in the morning. Winds could gust as high as 28 mph.

    High: 45 °F⇓

    Decreasing
    Clouds and
    Breezy

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 19. Northwest wind 7 to 15 mph, with gusts as high as 28 mph.

    Low: 19 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 31. Northwest wind 5 to 7 mph becoming south southwest in the afternoon.

    High: 31 °F

    Sunny

  • Thursday Night

    Thursday Night: A 20 percent chance of snow showers after midnight. Mostly cloudy, with a low around 24. Light south wind becoming south southwest 9 to 14 mph in the evening. Winds could gust as high as 23 mph.

    Low: 24 °F

    Partly Cloudy
    then Slight
    Chance Snow
    Showers

  • Friday

    Friday: Partly sunny, with a high near 45. West wind 11 to 16 mph, with gusts as high as 24 mph.

    High: 45 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 22. West northwest wind around 10 mph, with gusts as high as 20 mph.

    Low: 22 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 33. West northwest wind 10 to 14 mph, with gusts as high as 22 mph.

    High: 33 °F

    Partly Sunny

Detailed Forecast

Today
Partly sunny, with a high near 61. Southwest wind 9 to 15 mph, with gusts as high as 24 mph.
Tonight
A chance of showers before 2am, then a slight chance of showers after 5am. Mostly cloudy, with a low around 40. Southwest wind 6 to 8 mph becoming northwest after midnight. Chance of precipitation is 50%.
Wednesday
Mostly cloudy, then gradually becoming sunny, with a temperature falling to around 33 by 5pm. Breezy, with a north northwest wind 9 to 14 mph increasing to 15 to 20 mph in the morning. Winds could gust as high as 28 mph.
Wednesday Night
Mostly clear, with a low around 19. Northwest wind 7 to 15 mph, with gusts as high as 28 mph.
Thursday
Sunny, with a high near 31. Northwest wind 5 to 7 mph becoming south southwest in the afternoon.
Thursday Night
A 20 percent chance of snow showers after midnight. Mostly cloudy, with a low around 24. Light south wind becoming south southwest 9 to 14 mph in the evening. Winds could gust as high as 23 mph.
Friday
Partly sunny, with a high near 45. West wind 11 to 16 mph, with gusts as high as 24 mph.
Friday Night
Mostly cloudy, with a low around 22. West northwest wind around 10 mph, with gusts as high as 20 mph.
Saturday
Partly sunny, with a high near 33. West northwest wind 10 to 14 mph, with gusts as high as 22 mph.
Saturday Night
Partly cloudy, with a low around 11. Northwest wind 7 to 9 mph.
Sunday
Sunny, with a high near 27. West southwest wind 8 to 11 mph, with gusts as high as 18 mph.
Sunday Night
Partly cloudy, with a low around 12. Southwest wind 7 to 9 mph.
M.L.King Day
Sunny, with a high near 35. West northwest wind 8 to 14 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:
11:11 am CST Jan 13, 2026
Forecast Valid:
11am CST Jan 13, 2026-6pm CST Jan 19, 2026
 
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Additional Resources

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Chance of Precipitation