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Hazardous Weather Conditions

Current conditions at

Marion - Williamson County Regional Airport (KMWA)

Lat: 37.77°NLon: 89.01°WElev: 486ft.

Fair

6°F

-14°C

Humidity 67%
Wind Speed NW 3 mph
Barometer 30.36 in
Dewpoint -2°F (-19°C)
Visibility 10.00 mi
Last update 26 Jan 2:15 am CST
Extended Forecast for

Carterville IL

Extreme Cold Warning January 26, 02:37am until January 27, 10:00am
Click here for hazard details and duration
Extreme Cold Warning
  •  
    Extreme Cold Warning January 26, 02:37am until January 27, 10:00am

    NOW until 10:00am Tue

    Extreme Cold Warning

  • Overnight

    Low: -4 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 15. Wind chill values as low as -18. Northwest wind 5 to 8 mph becoming west southwest in the afternoon.

    High: 15 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a temperature rising to around 11 by 4am. Wind chill values as low as -6. Light south southwest wind becoming southwest 6 to 11 mph in the evening. Winds could gust as high as 22 mph.

    Low: 7 °F⇑

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 32. Wind chill values as low as -3. Southwest wind 5 to 10 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph.

    High: 32 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around -1. Light north northwest wind.

    Low: -1 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 28. Calm wind becoming west southwest around 6 mph in the afternoon.

    High: 28 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 5. Light and variable wind.

    Low: 5 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 22. Calm wind becoming north around 5 mph.

    High: 22 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around -4. Wind chill values as low as -15. Northwest wind 6 to 8 mph.
Monday
Sunny, with a high near 15. Wind chill values as low as -18. Northwest wind 5 to 8 mph becoming west southwest in the afternoon.
Monday Night
Mostly clear, with a temperature rising to around 11 by 4am. Wind chill values as low as -6. Light south southwest wind becoming southwest 6 to 11 mph in the evening. Winds could gust as high as 22 mph.
Tuesday
Sunny, with a high near 32. Wind chill values as low as -3. Southwest wind 5 to 10 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph.
Tuesday Night
Partly cloudy, with a low around -1. Light north northwest wind.
Wednesday
Sunny, with a high near 28. Calm wind becoming west southwest around 6 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 5. Light and variable wind.
Thursday
Mostly cloudy, with a high near 22. Calm wind becoming north around 5 mph.
Thursday Night
Mostly cloudy, with a low around 4. Light north wind.
Friday
Mostly sunny, with a high near 18. North wind 3 to 7 mph.
Friday Night
Mostly clear, with a low around -2. North wind 3 to 6 mph.
Saturday
Mostly sunny, with a high near 21. Northwest wind 3 to 6 mph.
Saturday Night
Partly cloudy, with a low around 5. Light and variable wind.
Sunday
Partly sunny, with a high near 28. South southwest wind 3 to 6 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Carterville IL
 37.74°N 89.09°W
Last Update:
1:01 am CST Jan 26, 2026
Forecast Valid:
2am CST Jan 26, 2026-6pm CST Feb 1, 2026
 
Forecast Discussion
 
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Additional Resources

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