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

12°F

-11°C

Humidity 73%
Wind Speed SW 12 mph
Barometer 30.29 in
Dewpoint 5°F (-15°C)
Visibility 10.00 mi
Wind Chill-2°F (-19°C)
Last update 27 Jan 7:45 am CST
Extended Forecast for

Marion IL

Extreme Cold Warning January 27, 08:33am until January 27, 10:00am
Click here for hazard details and duration
...
  •  
    Extreme Cold Warning January 27, 08:33am until January 27, 10:00am

    NOW until 10:00am Tue

    Extreme Cold Warning

  • Today

    High: 31 °F

    Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 0. Light north northwest wind.

    Low: 0 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 29. Wind chill values as low as zero. Calm wind becoming west around 6 mph.

    High: 29 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 10. Calm wind.

    Low: 10 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 24. Calm wind becoming north around 6 mph in the afternoon.

    High: 24 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 4. North wind 3 to 6 mph.

    Low: 4 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 16. North wind 6 to 10 mph.

    High: 16 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around -1. North wind 6 to 8 mph.

    Low: -1 °F

    Partly Cloudy

Detailed Forecast

Today
Sunny, with a high near 31. Southwest wind 6 to 13 mph becoming west northwest in the afternoon. Winds could gust as high as 18 mph.
Tonight
Mostly cloudy, with a low around 0. Light north northwest wind.
Wednesday
Mostly sunny, with a high near 29. Wind chill values as low as zero. Calm wind becoming west around 6 mph.
Wednesday Night
Mostly cloudy, with a low around 10. Calm wind.
Thursday
Mostly cloudy, with a high near 24. Calm wind becoming north around 6 mph in the afternoon.
Thursday Night
Mostly cloudy, with a low around 4. North wind 3 to 6 mph.
Friday
Mostly sunny, with a high near 16. North wind 6 to 10 mph.
Friday Night
Partly cloudy, with a low around -1. North wind 6 to 8 mph.
Saturday
Mostly sunny, with a high near 17. Northwest wind 6 to 9 mph.
Saturday Night
Partly cloudy, with a low around 2. Northwest wind around 5 mph becoming calm in the evening.
Sunday
Partly sunny, with a high near 26. Calm wind becoming west around 6 mph in the morning.
Sunday Night
Mostly cloudy, with a low around 10. Light southwest wind.
Monday
Partly sunny, with a high near 32. West southwest wind 3 to 7 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Marion IL
 37.73°N 88.92°W
Last Update:
8:12 am CST Jan 27, 2026
Forecast Valid:
8am CST Jan 27, 2026-6pm CST Feb 2, 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