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

27°F

-3°C

Humidity 46%
Wind Speed SW 12 mph
Barometer 30.06 in
Dewpoint 9°F (-13°C)
Visibility 10.00 mi
Wind Chill16°F (-9°C)
Last update 18 Jan 1:47 pm CST
Extended Forecast for

Benton IL

  • This Afternoon

    This Afternoon: Sunny early, then becoming mostly cloudy, with a steady temperature around 28. South southwest wind 7 to 10 mph, with gusts as high as 21 mph.

    High: 28 °F

    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 13. Southwest wind 10 to 14 mph becoming northwest after midnight. Winds could gust as high as 23 mph.

    Low: 13 °F

    Decreasing
    Clouds

  • M.L.King Day

    M.L.King Day: Increasing clouds, with a high near 22. Wind chill values as low as -3. Northwest wind 6 to 15 mph, with gusts as high as 24 mph.

    High: 22 °F

    Increasing
    Clouds

  • Monday Night

    Monday Night: Mostly clear, with a low around 11. Light and variable wind.

    Low: 11 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 36. Light south southwest wind increasing to 5 to 10 mph in the morning.

    High: 36 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 26. South wind 7 to 14 mph, with gusts as high as 23 mph.

    Low: 26 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A slight chance of rain and snow showers before noon. Partly sunny, with a high near 46. Southwest wind 7 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.

    High: 46 °F

    Slight Chance
    Rain/Snow
    then Mostly
    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 23. West northwest wind around 6 mph.

    Low: 23 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 37. Northwest wind 3 to 8 mph.

    High: 37 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny early, then becoming mostly cloudy, with a steady temperature around 28. South southwest wind 7 to 10 mph, with gusts as high as 21 mph.
Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 13. Southwest wind 10 to 14 mph becoming northwest after midnight. Winds could gust as high as 23 mph.
M.L.King Day
Increasing clouds, with a high near 22. Wind chill values as low as -3. Northwest wind 6 to 15 mph, with gusts as high as 24 mph.
Monday Night
Mostly clear, with a low around 11. Light and variable wind.
Tuesday
Sunny, with a high near 36. Light south southwest wind increasing to 5 to 10 mph in the morning.
Tuesday Night
Partly cloudy, with a low around 26. South wind 7 to 14 mph, with gusts as high as 23 mph.
Wednesday
A slight chance of rain and snow showers before noon. Partly sunny, with a high near 46. Southwest wind 7 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.
Wednesday Night
Partly cloudy, with a low around 23. West northwest wind around 6 mph.
Thursday
Sunny, with a high near 37. Northwest wind 3 to 8 mph.
Thursday Night
Partly cloudy, with a low around 22. Calm wind becoming south southwest around 6 mph after midnight.
Friday
Partly sunny, with a high near 40. South southwest wind 6 to 10 mph becoming north northeast in the afternoon.
Friday Night
A chance of snow showers. Mostly cloudy, with a low around 19. North northeast wind 7 to 10 mph.
Saturday
A chance of snow showers. Mostly cloudy, with a high near 29. North northeast wind around 11 mph, with gusts as high as 18 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:
2:21 pm CST Jan 18, 2026
Forecast Valid:
2pm CST Jan 18, 2026-6pm CST Jan 24, 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