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.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Benton IL
 38°N 88.93°W
Last Update:
2:17 pm CST Nov 18, 2025
Forecast Valid:
2pm CST Nov 18, 2025-6pm CST Nov 24, 2025
 
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Additional Resources

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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