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

68°F

20°C

Humidity 80%
Wind Speed S 14 mph
Barometer 29.99 in
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 6 Mar 9:15 pm CST
Extended Forecast for

Benton IL

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly after 5am. Mostly cloudy, with a steady temperature around 68. South wind 9 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 60%.

    Low: 68 °F

    Partly Cloudy
    then T-storms
    Likely

  • Saturday

    Saturday: Showers and thunderstorms, mainly before 11am. High near 73. South southwest wind 11 to 15 mph becoming west northwest in the afternoon. Winds could gust as high as 23 mph. Chance of precipitation is 90%.

    High: 73 °F

    T-storms then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 20 percent chance of showers before midnight. Mostly cloudy, then gradually becoming mostly clear, with a low around 40. Northwest wind 6 to 11 mph becoming light after midnight.

    Low: 40 °F

    Slight Chance
    Showers then
    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 64. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 64 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 46. South southwest wind 3 to 6 mph.

    Low: 46 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 74. South southwest wind 6 to 14 mph, with gusts as high as 23 mph.

    High: 74 °F

    Sunny

  • Monday Night

    Monday Night: A 30 percent chance of showers and thunderstorms, mainly after midnight. Mostly clear, with a low around 61. South southwest wind 7 to 10 mph, with gusts as high as 20 mph.

    Low: 61 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Tuesday

    Tuesday: Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 78. South southwest wind 7 to 15 mph, with gusts as high as 23 mph.

    High: 78 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm. Cloudy, with a low around 56. South southwest wind around 14 mph, with gusts as high as 22 mph.

    Low: 56 °F

    Showers

Detailed Forecast

Tonight
Showers and thunderstorms likely, mainly after 5am. Mostly cloudy, with a steady temperature around 68. South wind 9 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 60%.
Saturday
Showers and thunderstorms, mainly before 11am. High near 73. South southwest wind 11 to 15 mph becoming west northwest in the afternoon. Winds could gust as high as 23 mph. Chance of precipitation is 90%.
Saturday Night
A 20 percent chance of showers before midnight. Mostly cloudy, then gradually becoming mostly clear, with a low around 40. Northwest wind 6 to 11 mph becoming light after midnight.
Sunday
Sunny, with a high near 64. Calm wind becoming southwest around 6 mph in the afternoon.
Sunday Night
Clear, with a low around 46. South southwest wind 3 to 6 mph.
Monday
Sunny, with a high near 74. South southwest wind 6 to 14 mph, with gusts as high as 23 mph.
Monday Night
A 30 percent chance of showers and thunderstorms, mainly after midnight. Mostly clear, with a low around 61. South southwest wind 7 to 10 mph, with gusts as high as 20 mph.
Tuesday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 78. South southwest wind 7 to 15 mph, with gusts as high as 23 mph.
Tuesday Night
Showers and possibly a thunderstorm. Cloudy, with a low around 56. South southwest wind around 14 mph, with gusts as high as 22 mph.
Wednesday
Showers and possibly a thunderstorm before noon, then showers likely. Cloudy, with a high near 66. West southwest wind around 14 mph becoming north northwest in the afternoon. Winds could gust as high as 22 mph.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 38. North wind 7 to 13 mph, with gusts as high as 20 mph.
Thursday
Partly sunny, with a high near 57. North wind 6 to 8 mph becoming east in the afternoon.
Thursday Night
Mostly clear, with a low around 39. East southeast wind 5 to 8 mph becoming south after midnight.
Friday
Sunny, with a high near 64. South southwest wind 8 to 14 mph, with gusts as high as 21 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:
8:32 pm CST Mar 6, 2026
Forecast Valid:
9pm CST Mar 6, 2026-6pm CDT Mar 13, 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