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

39°F

4°C

Humidity 81%
Wind Speed S 12 mph
Barometer 29.98 in
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill32°F (0°C)
Last update 6 Dec 6:45 pm CST
Extended Forecast for

Benton IL

  • Tonight

    Tonight: A slight chance of drizzle after 4am. Patchy fog between 11pm and midnight. Otherwise, cloudy, with a low around 34. Light south wind.

    Low: 34 °F

    Patchy Fog
    then Slight
    Chance
    Drizzle

  • Sunday

    Sunday: A slight chance of drizzle before 5pm. Cloudy, with a high near 45. Light and variable wind becoming north 6 to 11 mph in the morning.

    High: 45 °F

    Slight Chance
    Drizzle

  • Sunday Night

    Sunday Night: A slight chance of rain and snow showers before 10pm, then a slight chance of snow showers between 10pm and midnight. Mostly cloudy, with a low around 25. North wind 6 to 11 mph. Chance of precipitation is 20%.

    Low: 25 °F

    Slight Chance
    Rain/Snow
    then Mostly
    Cloudy

  • Monday

    Monday: Mostly cloudy, then gradually becoming sunny, with a high near 37. North wind around 6 mph becoming calm in the afternoon.

    High: 37 °F

    Decreasing
    Clouds

  • Monday Night

    Monday Night: Mostly clear, with a low around 25. Calm wind becoming south southwest 5 to 9 mph after midnight.

    Low: 25 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 49. South southwest wind 10 to 15 mph, with gusts as high as 23 mph.

    High: 49 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 41. South southwest wind around 16 mph, with gusts as high as 25 mph.

    Low: 41 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A slight chance of showers after noon. Partly sunny, with a high near 51. Southwest wind 8 to 16 mph becoming northwest in the afternoon. Winds could gust as high as 23 mph.

    High: 51 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of rain and snow showers, mainly after midnight. Mostly cloudy, with a low around 29. Northwest wind 5 to 7 mph becoming east after midnight.

    Low: 29 °F

    Chance
    Rain/Snow

Detailed Forecast

Tonight
A slight chance of drizzle after 4am. Patchy fog between 11pm and midnight. Otherwise, cloudy, with a low around 34. Light south wind.
Sunday
A slight chance of drizzle before 5pm. Cloudy, with a high near 45. Light and variable wind becoming north 6 to 11 mph in the morning.
Sunday Night
A slight chance of rain and snow showers before 10pm, then a slight chance of snow showers between 10pm and midnight. Mostly cloudy, with a low around 25. North wind 6 to 11 mph. Chance of precipitation is 20%.
Monday
Mostly cloudy, then gradually becoming sunny, with a high near 37. North wind around 6 mph becoming calm in the afternoon.
Monday Night
Mostly clear, with a low around 25. Calm wind becoming south southwest 5 to 9 mph after midnight.
Tuesday
Mostly sunny, with a high near 49. South southwest wind 10 to 15 mph, with gusts as high as 23 mph.
Tuesday Night
Mostly cloudy, with a low around 41. South southwest wind around 16 mph, with gusts as high as 25 mph.
Wednesday
A slight chance of showers after noon. Partly sunny, with a high near 51. Southwest wind 8 to 16 mph becoming northwest in the afternoon. Winds could gust as high as 23 mph.
Wednesday Night
A chance of rain and snow showers, mainly after midnight. Mostly cloudy, with a low around 29. Northwest wind 5 to 7 mph becoming east after midnight.
Thursday
A chance of snow showers before noon, then a slight chance of rain and snow showers. Mostly cloudy, with a high near 40. East southeast wind 6 to 10 mph becoming west northwest in the afternoon.
Thursday Night
Mostly cloudy, with a low around 22. West northwest wind 6 to 8 mph.
Friday
Partly sunny, with a high near 31. Northwest wind 8 to 11 mph.
Friday Night
Partly cloudy, with a low around 10. Northwest wind 7 to 9 mph.
Saturday
Mostly sunny, with a high near 28. Northwest wind 7 to 10 mph.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Benton IL
 38°N 88.93°W
Last Update:
5:11 pm CST Dec 6, 2025
Forecast Valid:
8pm CST Dec 6, 2025-6pm CST Dec 13, 2025
 
Forecast Discussion
 
Get as KML Get as XML

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