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

36°F

2°C

Humidity 70%
Wind Speed N 13 mph
Barometer 30.07 in
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Wind Chill27°F (-3°C)
Last update 3 Feb 12:45 pm CST
Extended Forecast for

Carterville IL

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 38. Light north wind increasing to 5 to 9 mph.

    High: 38 °F

    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy, with a low around 23. North wind 6 to 8 mph.

    Low: 23 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Cloudy, then gradually becoming mostly sunny, with a high near 31. North wind 6 to 9 mph.

    High: 31 °F

    Decreasing
    Clouds

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 14. North wind around 6 mph becoming calm in the evening.

    Low: 14 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 36. Calm wind becoming south 5 to 9 mph in the afternoon.

    High: 36 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 30. West southwest wind 6 to 9 mph.

    Low: 30 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 51. West southwest wind 6 to 10 mph becoming north northwest in the afternoon. Winds could gust as high as 18 mph.

    High: 51 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 26. North northwest wind 3 to 6 mph.

    Low: 26 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 42. Light and variable wind becoming east northeast around 5 mph.

    High: 42 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 38. Light north wind increasing to 5 to 9 mph.
Tonight
Mostly cloudy, with a low around 23. North wind 6 to 8 mph.
Wednesday
Cloudy, then gradually becoming mostly sunny, with a high near 31. North wind 6 to 9 mph.
Wednesday Night
Partly cloudy, with a low around 14. North wind around 6 mph becoming calm in the evening.
Thursday
Partly sunny, with a high near 36. Calm wind becoming south 5 to 9 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 30. West southwest wind 6 to 9 mph.
Friday
Sunny, with a high near 51. West southwest wind 6 to 10 mph becoming north northwest in the afternoon. Winds could gust as high as 18 mph.
Friday Night
Mostly clear, with a low around 26. North northwest wind 3 to 6 mph.
Saturday
Sunny, with a high near 42. Light and variable wind becoming east northeast around 5 mph.
Saturday Night
Partly cloudy, with a low around 29. South southeast wind 3 to 6 mph.
Sunday
Mostly sunny, with a high near 49. South southeast wind around 6 mph becoming northeast in the afternoon.
Sunday Night
Partly cloudy, with a low around 26. Light northeast wind.
Monday
Mostly sunny, with a high near 48. Calm wind becoming southeast around 5 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Carterville IL
 37.76°N 89.09°W
Last Update:
1:12 pm CST Feb 3, 2026
Forecast Valid:
1pm CST Feb 3, 2026-6pm CST Feb 9, 2026
 
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Additional Resources

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