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.

Rain

35°F

2°C

Humidity 96%
Wind Speed E 9 mph
Barometer 30.24 in
Dewpoint 34°F (1°C)
Visibility 7.00 mi
Wind Chill28°F (-2°C)
Last update 2 Mar 4:15 am CST
Extended Forecast for

Benton IL

  • Overnight

    Overnight: Showers. Low around 35. East wind 7 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.

    Low: 35 °F

    Showers

  • Monday

    Monday: Showers before 2pm, then a slight chance of drizzle after 5pm. High near 46. East northeast wind 6 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 80%.

    High: 46 °F

    Showers then
    Slight Chance
    Showers

  • Monday Night

    Monday Night: Showers likely, mainly after 5am. Mostly cloudy, with a low around 41. East northeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%.

    Low: 41 °F

    Mostly Cloudy
    then Showers
    Likely

  • Tuesday

    Tuesday: Showers likely, mainly before noon. Mostly cloudy, with a high near 69. East wind 5 to 11 mph becoming south southwest in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 70%.

    High: 69 °F

    Showers
    Likely then
    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A 50 percent chance of showers. Mostly cloudy, with a low around 57. South wind 6 to 8 mph.

    Low: 57 °F

    Chance
    Showers

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 73. South southwest wind 8 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.

    High: 73 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 59. South southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.

    Low: 59 °F

    Showers
    Likely

  • Thursday

    Thursday: Showers. Mostly cloudy, with a high near 71. Southwest wind 8 to 11 mph, with gusts as high as 20 mph.

    High: 71 °F

    Showers

  • Thursday Night

    Thursday Night: A chance of showers, then showers likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 59. South wind 6 to 8 mph.

    Low: 59 °F

    Showers
    Likely

Detailed Forecast

Overnight
Showers. Low around 35. East wind 7 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.
Monday
Showers before 2pm, then a slight chance of drizzle after 5pm. High near 46. East northeast wind 6 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 80%.
Monday Night
Showers likely, mainly after 5am. Mostly cloudy, with a low around 41. East northeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%.
Tuesday
Showers likely, mainly before noon. Mostly cloudy, with a high near 69. East wind 5 to 11 mph becoming south southwest in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 70%.
Tuesday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 57. South wind 6 to 8 mph.
Wednesday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 73. South southwest wind 8 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.
Wednesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 59. South southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.
Thursday
Showers. Mostly cloudy, with a high near 71. Southwest wind 8 to 11 mph, with gusts as high as 20 mph.
Thursday Night
A chance of showers, then showers likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 59. South wind 6 to 8 mph.
Friday
A chance of showers and thunderstorms before noon, then a slight chance of showers. Partly sunny, with a high near 78. South southwest wind 9 to 16 mph, with gusts as high as 23 mph.
Friday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 59. South wind around 10 mph, with gusts as high as 20 mph.
Saturday
Showers likely and possibly a thunderstorm. Cloudy, with a high near 70. Southwest wind 6 to 10 mph, with gusts as high as 18 mph.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 49. West wind around 5 mph becoming light and variable in the evening.
Sunday
A chance of showers. Mostly cloudy, with a high near 66. Light and variable wind becoming south 5 to 8 mph in the morning.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Benton IL
 38°N 88.93°W
Last Update:
3:52 am CST Mar 2, 2026
Forecast Valid:
4am CST Mar 2, 2026-6pm CDT Mar 8, 2026
 
Forecast Discussion
 
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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