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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

9°F

-13°C

Humidity 69%
Wind Speed NW 5 mph
Barometer 30.35 in
Dewpoint 0°F (-18°C)
Visibility 10.00 mi
Wind Chill0°F (-18°C)
Last update 25 Jan 11:55 pm CST
Extended Forecast for

Marion IL

Extreme Cold Warning January 26, 12:17am until January 27, 10:00am
Click here for hazard details and duration
Extreme Cold Warning
  •  
    Extreme Cold Warning January 26, 12:17am until January 27, 10:00am

    NOW until 10:00am Tue

    Extreme Cold Warning

  • Overnight

    Low: -5 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 14. Wind chill values as low as -19. West northwest wind 3 to 8 mph.

    High: 14 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a steady temperature around 7. Wind chill values as low as -8. Light south southwest wind increasing to 6 to 11 mph in the evening. Winds could gust as high as 21 mph.

    Low: 7 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 29. Wind chill values as low as -6. Southwest wind 5 to 11 mph becoming northwest in the afternoon. Winds could gust as high as 21 mph.

    High: 29 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around -2. Light north northwest wind.

    Low: -2 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 25. Calm wind becoming west southwest around 6 mph in the afternoon.

    High: 25 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 2. Light and variable wind.

    Low: 2 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 19. North northwest wind 3 to 6 mph.

    High: 19 °F

    Partly Sunny

Detailed Forecast

Overnight
Partly cloudy, with a low around -5. Wind chill values as low as -17. Northwest wind around 8 mph.
Monday
Sunny, with a high near 14. Wind chill values as low as -19. West northwest wind 3 to 8 mph.
Monday Night
Mostly clear, with a steady temperature around 7. Wind chill values as low as -8. Light south southwest wind increasing to 6 to 11 mph in the evening. Winds could gust as high as 21 mph.
Tuesday
Sunny, with a high near 29. Wind chill values as low as -6. Southwest wind 5 to 11 mph becoming northwest in the afternoon. Winds could gust as high as 21 mph.
Tuesday Night
Partly cloudy, with a low around -2. Light north northwest wind.
Wednesday
Mostly sunny, with a high near 25. Calm wind becoming west southwest around 6 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 2. Light and variable wind.
Thursday
Partly sunny, with a high near 19. North northwest wind 3 to 6 mph.
Thursday Night
Mostly cloudy, with a low around 3. Light north wind.
Friday
Partly sunny, with a high near 19. North wind 3 to 7 mph.
Friday Night
Partly cloudy, with a low around -1. North wind around 5 mph becoming calm in the evening.
Saturday
Mostly sunny, with a high near 20. North northwest wind 3 to 7 mph.
Saturday Night
Partly cloudy, with a low around 3. Light and variable wind.
Sunday
Partly sunny, with a high near 27. South southwest wind 3 to 7 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Marion IL
 37.73°N 88.95°W
Last Update:
10:06 pm CST Jan 25, 2026
Forecast Valid:
12am CST Jan 26, 2026-6pm CST Feb 1, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation