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

60°F

16°C

Humidity 52%
Wind Speed S 14 mph
Barometer 29.72 in
Dewpoint 42°F (6°C)
Visibility 10.00 mi
Last update 15 Mar 3:15 am CDT
Extended Forecast for

Benton IL

Wind Advisory March 15, 10:00am until March 16, 07:00am
Click here for hazard details and duration
Wind Advisory

  • Overnight

    Overnight: Mostly cloudy, with a steady temperature around 58. South wind 7 to 9 mph, with gusts as high as 21 mph.

    Low: 58 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 4pm. High near 70. Breezy, with a south wind 16 to 26 mph, with gusts as high as 39 mph. Chance of precipitation is 80%.

    High: 70 °F

    Breezy.
    Mostly Cloudy
    then Showers

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm, mainly before 10pm. Low around 25. Breezy, with a west wind 23 to 26 mph, with gusts as high as 40 mph. Chance of precipitation is 90%.

    Low: 25 °F

    Breezy.
    Showers then
    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 33. Breezy, with a west northwest wind around 22 mph, with gusts as high as 33 mph.

    High: 33 °F

    Mostly Cloudy
    and Breezy

  • Monday Night

    Monday Night: Mostly clear, with a low around 17. West northwest wind 10 to 18 mph, with gusts as high as 25 mph.

    Low: 17 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 38. West northwest wind around 7 mph.

    High: 38 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of snow showers after 1am. Mostly cloudy, with a low around 30. Light south southeast wind becoming south 8 to 13 mph in the evening. Winds could gust as high as 21 mph.

    Low: 30 °F

    Mostly Cloudy
    then Slight
    Chance Snow
    Showers

  • Wednesday

    Wednesday: Partly sunny, with a high near 60. South wind 13 to 15 mph, with gusts as high as 23 mph.

    High: 60 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 43. South southwest wind 5 to 7 mph.

    Low: 43 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a steady temperature around 58. South wind 7 to 9 mph, with gusts as high as 21 mph.
Sunday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 4pm. High near 70. Breezy, with a south wind 16 to 26 mph, with gusts as high as 39 mph. Chance of precipitation is 80%.
Sunday Night
Showers and possibly a thunderstorm, mainly before 10pm. Low around 25. Breezy, with a west wind 23 to 26 mph, with gusts as high as 40 mph. Chance of precipitation is 90%.
Monday
Mostly cloudy, with a high near 33. Breezy, with a west northwest wind around 22 mph, with gusts as high as 33 mph.
Monday Night
Mostly clear, with a low around 17. West northwest wind 10 to 18 mph, with gusts as high as 25 mph.
Tuesday
Sunny, with a high near 38. West northwest wind around 7 mph.
Tuesday Night
A 20 percent chance of snow showers after 1am. Mostly cloudy, with a low around 30. Light south southeast wind becoming south 8 to 13 mph in the evening. Winds could gust as high as 21 mph.
Wednesday
Partly sunny, with a high near 60. South wind 13 to 15 mph, with gusts as high as 23 mph.
Wednesday Night
Partly cloudy, with a low around 43. South southwest wind 5 to 7 mph.
Thursday
Sunny, with a high near 70. South southwest wind 5 to 7 mph becoming west in the afternoon.
Thursday Night
Partly cloudy, with a low around 44. Light and variable wind.
Friday
Mostly sunny, with a high near 74. Southwest wind 3 to 8 mph.
Friday Night
Mostly cloudy, with a low around 49. Southwest wind around 7 mph becoming northwest after midnight.
Saturday
Partly sunny, with a high near 69. Northwest wind 8 to 10 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Benton IL
 38°N 88.93°W
Last Update:
3:16 am CDT Mar 15, 2026
Forecast Valid:
3am CDT Mar 15, 2026-6pm CDT Mar 21, 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