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

24°F

-4°C

Humidity 63%
Wind Speed NW 8 mph
Barometer 30.40 in
Dewpoint 13°F (-11°C)
Visibility 10.00 mi
Wind Chill15°F (-9°C)
Last update 29 Dec 10:35 pm CST
Extended Forecast for

Benton IL

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 16. Northwest wind 7 to 10 mph, with gusts as high as 20 mph.

    Low: 16 °F

    Decreasing
    Clouds

  • Tuesday

    Tuesday: Sunny, with a high near 35. West northwest wind 6 to 9 mph becoming southwest in the afternoon.

    High: 35 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 27. Southwest wind around 6 mph.

    Low: 27 °F

    Mostly Clear

  • Wednesday

    Wednesday: Partly sunny, with a high near 43. West northwest wind 6 to 10 mph.

    High: 43 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 26. Light and variable wind.

    Low: 26 °F

    Partly Cloudy

  • New Year's Day

    New Year's Day: Mostly sunny, with a high near 42. North wind 3 to 6 mph.

    High: 42 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 30. Calm wind.

    Low: 30 °F

    Mostly Cloudy

  • Friday

    Friday: A slight chance of showers after noon. Mostly cloudy, with a high near 48. Calm wind becoming southeast around 6 mph in the morning.

    High: 48 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Friday Night

    Friday Night: A slight chance of showers before midnight. Mostly cloudy, with a low around 31. North northeast wind 3 to 5 mph.

    Low: 31 °F

    Slight Chance
    Showers then
    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 16. Northwest wind 7 to 10 mph, with gusts as high as 20 mph.
Tuesday
Sunny, with a high near 35. West northwest wind 6 to 9 mph becoming southwest in the afternoon.
Tuesday Night
Mostly clear, with a low around 27. Southwest wind around 6 mph.
Wednesday
Partly sunny, with a high near 43. West northwest wind 6 to 10 mph.
Wednesday Night
Partly cloudy, with a low around 26. Light and variable wind.
New Year's Day
Mostly sunny, with a high near 42. North wind 3 to 6 mph.
Thursday Night
Mostly cloudy, with a low around 30. Calm wind.
Friday
A slight chance of showers after noon. Mostly cloudy, with a high near 48. Calm wind becoming southeast around 6 mph in the morning.
Friday Night
A slight chance of showers before midnight. Mostly cloudy, with a low around 31. North northeast wind 3 to 5 mph.
Saturday
Mostly sunny, with a high near 45. North wind 3 to 7 mph.
Saturday Night
Partly cloudy, with a low around 28. Calm wind.
Sunday
Mostly sunny, with a high near 48. Calm wind becoming south 5 to 7 mph in the morning.
Sunday Night
Partly cloudy, with a low around 34. South southwest wind around 6 mph.
Monday
Mostly sunny, with a high near 51. West wind 6 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:
9:11 pm CST Dec 29, 2025
Forecast Valid:
10pm CST Dec 29, 2025-6pm CST Jan 5, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation