National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Marion - Williamson County Regional Airport (KMWA)

Lat: 37.77°NLon: 89.01°WElev: 486ft.

Overcast

35°F

2°C

Humidity 46%
Wind Speed SW 15 G 22 mph
Barometer 30.17 in
Dewpoint 16°F (-9°C)
Visibility 10.00 mi
Wind Chill25°F (-4°C)
Last update 21 Jan 3:55 am CST
Extended Forecast for

Benton IL

  • Today

    Today: Mostly cloudy, then gradually becoming sunny, with a high near 47. West southwest wind 7 to 14 mph, with gusts as high as 23 mph.

    High: 47 °F

    Decreasing
    Clouds

  • Tonight

    Tonight: Mostly clear, with a low around 24. West southwest wind around 6 mph becoming light and variable after midnight.

    Low: 24 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 39. North northwest wind 3 to 5 mph.

    High: 39 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 14. Light north northeast wind becoming north 8 to 13 mph after midnight. Winds could gust as high as 21 mph.

    Low: 14 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 21. North wind around 14 mph, with gusts as high as 22 mph.

    High: 21 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: A 20 percent chance of snow showers after midnight. Mostly cloudy, with a low around 4. North northeast wind 10 to 13 mph, with gusts as high as 20 mph.

    Low: 4 °F

    Mostly Cloudy
    then Slight
    Chance Snow
    Showers

  • Saturday

    Saturday: Snow showers likely, mainly after noon. Cloudy, with a high near 15. Northeast wind 9 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.

    High: 15 °F

    Chance Snow
    Showers then
    Snow Showers
    Likely

  • Saturday Night

    Saturday Night: Snow showers likely, mainly before midnight. Mostly cloudy, with a low around 10. North northeast wind 7 to 9 mph.

    Low: 10 °F

    Snow Showers
    Likely

  • Sunday

    Sunday: A slight chance of snow showers before noon. Mostly cloudy, with a high near 20. North wind 6 to 8 mph.

    High: 20 °F

    Slight Chance
    Snow Showers
    then Partly
    Sunny

Detailed Forecast

Today
Mostly cloudy, then gradually becoming sunny, with a high near 47. West southwest wind 7 to 14 mph, with gusts as high as 23 mph.
Tonight
Mostly clear, with a low around 24. West southwest wind around 6 mph becoming light and variable after midnight.
Thursday
Mostly sunny, with a high near 39. North northwest wind 3 to 5 mph.
Thursday Night
Mostly cloudy, with a low around 14. Light north northeast wind becoming north 8 to 13 mph after midnight. Winds could gust as high as 21 mph.
Friday
Mostly cloudy, with a high near 21. North wind around 14 mph, with gusts as high as 22 mph.
Friday Night
A 20 percent chance of snow showers after midnight. Mostly cloudy, with a low around 4. North northeast wind 10 to 13 mph, with gusts as high as 20 mph.
Saturday
Snow showers likely, mainly after noon. Cloudy, with a high near 15. Northeast wind 9 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.
Saturday Night
Snow showers likely, mainly before midnight. Mostly cloudy, with a low around 10. North northeast wind 7 to 9 mph.
Sunday
A slight chance of snow showers before noon. Mostly cloudy, with a high near 20. North wind 6 to 8 mph.
Sunday Night
Partly cloudy, with a low around 6. Northwest wind 3 to 5 mph.
Monday
Sunny, with a high near 23. Northwest wind 5 to 7 mph becoming west southwest in the afternoon.
Monday Night
Mostly clear, with a low around 8. South southwest wind 3 to 5 mph.
Tuesday
Mostly sunny, with a high near 31. South southwest wind 5 to 8 mph.
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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 Jan 21, 2026
Forecast Valid:
4am CST Jan 21, 2026-6pm CST Jan 27, 2026
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation