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.

Mostly Cloudy

70°F

21°C

Humidity 73%
Wind Speed S 14 mph
Barometer 29.82 in
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 18 Nov 1:45 pm CST
Extended Forecast for

Benton IL

  • This Afternoon

    This Afternoon: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5pm. Partly sunny, with a high near 66. Southwest wind 6 to 10 mph. Chance of precipitation is 60%.

    High: 66 °F

    Showers
    Likely

  • Tonight

    Tonight: A 40 percent chance of showers before 8pm. Increasing clouds, with a low around 49. Light and variable wind.

    Low: 49 °F

    Chance
    Showers then
    Mostly Cloudy

  • Wednesday

    Wednesday: Cloudy, with a high near 61. Calm wind becoming north around 5 mph.

    High: 61 °F

    Cloudy

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers after midnight. Mostly cloudy, with a low around 49. Calm wind.

    Low: 49 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Thursday

    Thursday: Showers, with thunderstorms also possible after 3pm. High near 62. Calm wind becoming southeast 5 to 7 mph in the morning. Chance of precipitation is 80%.

    High: 62 °F

    Showers

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm before 9pm, then showers between 9pm and midnight, then showers and possibly a thunderstorm after midnight. Low around 55. Light and variable wind. Chance of precipitation is 80%.

    Low: 55 °F

    Showers

  • Friday

    Friday: Showers. High near 63. Light east northeast wind increasing to 5 to 10 mph in the morning. Chance of precipitation is 90%.

    High: 63 °F

    Showers

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm before midnight, then a chance of showers. Mostly cloudy, with a low around 50. North northeast wind around 7 mph.

    Low: 50 °F

    Showers

  • Saturday

    Saturday: A slight chance of showers before noon. Partly sunny, with a high near 61. North northwest wind 3 to 8 mph.

    High: 61 °F

    Slight Chance
    Showers then
    Partly Sunny

Detailed Forecast

This Afternoon
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5pm. Partly sunny, with a high near 66. Southwest wind 6 to 10 mph. Chance of precipitation is 60%.
Tonight
A 40 percent chance of showers before 8pm. Increasing clouds, with a low around 49. Light and variable wind.
Wednesday
Cloudy, with a high near 61. Calm wind becoming north around 5 mph.
Wednesday Night
A 20 percent chance of showers after midnight. Mostly cloudy, with a low around 49. Calm wind.
Thursday
Showers, with thunderstorms also possible after 3pm. High near 62. Calm wind becoming southeast 5 to 7 mph in the morning. Chance of precipitation is 80%.
Thursday Night
Showers and possibly a thunderstorm before 9pm, then showers between 9pm and midnight, then showers and possibly a thunderstorm after midnight. Low around 55. Light and variable wind. Chance of precipitation is 80%.
Friday
Showers. High near 63. Light east northeast wind increasing to 5 to 10 mph in the morning. Chance of precipitation is 90%.
Friday Night
Showers and possibly a thunderstorm before midnight, then a chance of showers. Mostly cloudy, with a low around 50. North northeast wind around 7 mph.
Saturday
A slight chance of showers before noon. Partly sunny, with a high near 61. North northwest wind 3 to 8 mph.
Saturday Night
Partly cloudy, with a low around 42. Calm wind.
Sunday
Mostly sunny, with a high near 63. Calm wind becoming west 5 to 7 mph in the morning.
Sunday Night
A slight chance of showers. Partly cloudy, with a low around 44. Light south southwest wind.
Monday
A chance of showers. Partly sunny, with a high near 62. Calm wind becoming south southwest 5 to 7 mph in the morning.
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:
1:02 pm CST Nov 18, 2025
Forecast Valid:
2pm CST Nov 18, 2025-6pm CST Nov 24, 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