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.

Partly Cloudy

75°F

24°C

Humidity 65%
Wind Speed SW 9 mph
Barometer 29.96 in
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 16 Apr 3:47 pm CDT
Extended Forecast for

Benton IL

  • This Afternoon

    This Afternoon: A 30 percent chance of showers and thunderstorms after 5pm. Mostly sunny, with a high near 81. West southwest wind around 9 mph.

    High: 81 °F

    Chance
    T-storms

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly before 7pm. Mostly clear, with a low around 60. Southwest wind around 5 mph becoming calm in the evening.

    Low: 60 °F

    Chance
    T-storms then
    Mostly Clear

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms, mainly between 3pm and 4pm. Mostly sunny, with a high near 86. Light south wind becoming south southwest 9 to 14 mph in the morning. Winds could gust as high as 21 mph.

    High: 86 °F

    Mostly Sunny
    then Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 54. South wind 11 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 70%.

    Low: 54 °F

    Chance
    T-storms then
    Showers
    Likely

  • Saturday

    Saturday: Showers and possibly a thunderstorm before 4pm, then showers likely. High near 68. West northwest wind 14 to 16 mph, with gusts as high as 23 mph. Chance of precipitation is 80%.

    High: 68 °F

    Showers

  • Saturday Night

    Saturday Night: A 20 percent chance of showers before 1am. Mostly clear, with a low around 39. Northwest wind 6 to 13 mph, with gusts as high as 21 mph.

    Low: 39 °F

    Slight Chance
    Showers

  • Sunday

    Sunday: Sunny, with a high near 67. West northwest wind 5 to 13 mph, with gusts as high as 20 mph.

    High: 67 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 43. North northwest wind around 6 mph becoming calm in the evening.

    Low: 43 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 72. Light and variable wind becoming south southeast 5 to 7 mph in the morning.

    High: 72 °F

    Sunny

Detailed Forecast

This Afternoon
A 30 percent chance of showers and thunderstorms after 5pm. Mostly sunny, with a high near 81. West southwest wind around 9 mph.
Tonight
A 30 percent chance of showers and thunderstorms, mainly before 7pm. Mostly clear, with a low around 60. Southwest wind around 5 mph becoming calm in the evening.
Friday
A 30 percent chance of showers and thunderstorms, mainly between 3pm and 4pm. Mostly sunny, with a high near 86. Light south wind becoming south southwest 9 to 14 mph in the morning. Winds could gust as high as 21 mph.
Friday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 54. South wind 11 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 70%.
Saturday
Showers and possibly a thunderstorm before 4pm, then showers likely. High near 68. West northwest wind 14 to 16 mph, with gusts as high as 23 mph. Chance of precipitation is 80%.
Saturday Night
A 20 percent chance of showers before 1am. Mostly clear, with a low around 39. Northwest wind 6 to 13 mph, with gusts as high as 21 mph.
Sunday
Sunny, with a high near 67. West northwest wind 5 to 13 mph, with gusts as high as 20 mph.
Sunday Night
Clear, with a low around 43. North northwest wind around 6 mph becoming calm in the evening.
Monday
Sunny, with a high near 72. Light and variable wind becoming south southeast 5 to 7 mph in the morning.
Monday Night
Mostly clear, with a low around 52. South wind around 7 mph.
Tuesday
Sunny, with a high near 78. Southwest wind 7 to 14 mph, with gusts as high as 22 mph.
Tuesday Night
Partly cloudy, with a low around 56. South southwest wind 6 to 9 mph.
Wednesday
Mostly sunny, with a high near 78. Southwest wind 6 to 10 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Benton IL
 38°N 88.93°W
Last Update:
2:57 pm CDT Apr 16, 2026
Forecast Valid:
4pm CDT Apr 16, 2026-6pm CDT Apr 22, 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