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.

Fair

44°F

7°C

Humidity 73%
Wind Speed Calm
Barometer 30.03 in
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Last update 28 Feb 3:35 am CST
Extended Forecast for

Benton IL

  • Overnight

    Overnight: Mostly clear, with a low around 41. Light northeast wind.

    Low: 41 °F

    Mostly Clear

  • Saturday

    Saturday: Increasing clouds, with a high near 67. North northeast wind around 6 mph becoming south southwest in the afternoon.

    High: 67 °F

    Increasing
    Clouds

  • Saturday Night

    Saturday Night: A slight chance of showers between 7pm and 11pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 34. South wind 5 to 10 mph becoming north after midnight. Winds could gust as high as 18 mph. Chance of precipitation is 20%.

    Low: 34 °F

    Slight Chance
    Showers then
    Partly Cloudy

  • Sunday

    Sunday: Increasing clouds, with a high near 48. North northeast wind 9 to 11 mph, with gusts as high as 18 mph.

    High: 48 °F

    Increasing
    Clouds

  • Sunday Night

    Sunday Night: A chance of rain showers before 9pm, then rain and snow showers likely. Cloudy, with a low around 33. East northeast wind around 10 mph. Chance of precipitation is 70%.

    Low: 33 °F

    Chance
    Rain/Snow
    then
    Rain/Snow
    Likely

  • Monday

    Monday: A chance of rain and snow showers before 9am, then a chance of rain showers. Cloudy, with a high near 44. East wind 7 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 50%.

    High: 44 °F

    Chance
    Rain/Snow
    then Slight
    Chance
    Showers

  • Monday Night

    Monday Night: Showers likely, mainly after midnight. Cloudy, with a low around 40. East wind 6 to 10 mph becoming south after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 60%.

    Low: 40 °F

    Showers
    Likely

  • Tuesday

    Tuesday: Showers likely and possibly a thunderstorm. Cloudy, with a high near 64. South southwest wind 11 to 14 mph, with gusts as high as 23 mph.

    High: 64 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers likely, with thunderstorms also possible after midnight. Cloudy, with a low around 53. South southwest wind 7 to 10 mph becoming southeast after midnight.

    Low: 53 °F

    Showers
    Likely

Detailed Forecast

Overnight
Mostly clear, with a low around 41. Light northeast wind.
Saturday
Increasing clouds, with a high near 67. North northeast wind around 6 mph becoming south southwest in the afternoon.
Saturday Night
A slight chance of showers between 7pm and 11pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 34. South wind 5 to 10 mph becoming north after midnight. Winds could gust as high as 18 mph. Chance of precipitation is 20%.
Sunday
Increasing clouds, with a high near 48. North northeast wind 9 to 11 mph, with gusts as high as 18 mph.
Sunday Night
A chance of rain showers before 9pm, then rain and snow showers likely. Cloudy, with a low around 33. East northeast wind around 10 mph. Chance of precipitation is 70%.
Monday
A chance of rain and snow showers before 9am, then a chance of rain showers. Cloudy, with a high near 44. East wind 7 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 50%.
Monday Night
Showers likely, mainly after midnight. Cloudy, with a low around 40. East wind 6 to 10 mph becoming south after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 60%.
Tuesday
Showers likely and possibly a thunderstorm. Cloudy, with a high near 64. South southwest wind 11 to 14 mph, with gusts as high as 23 mph.
Tuesday Night
Showers likely, with thunderstorms also possible after midnight. Cloudy, with a low around 53. South southwest wind 7 to 10 mph becoming southeast after midnight.
Wednesday
Showers likely and possibly a thunderstorm before noon, then a chance of showers and thunderstorms after noon. Cloudy, with a high near 67. South wind 8 to 11 mph, with gusts as high as 18 mph.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 54. South wind around 9 mph.
Thursday
A chance of showers. Partly sunny, with a high near 70. South southwest wind 8 to 11 mph, with gusts as high as 18 mph.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 57. South wind around 7 mph.
Friday
Showers and thunderstorms likely. Mostly cloudy, with a high near 74. South southwest wind 7 to 13 mph, with gusts as high as 20 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:
3:31 am CST Feb 28, 2026
Forecast Valid:
3am CST Feb 28, 2026-6pm CST Mar 6, 2026
 
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