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.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update 21 Jan 6:45 am CST
Extended Forecast for

Marion IL

  • Today

    Today: A slight chance of freezing rain before 8am, then a slight chance of rain showers between 8am and 9am. Partly sunny, with a high near 46. West southwest wind 6 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.

    High: 46 °F

    Slight Chance
    Rain/Freezing
    Rain then
    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 24. West southwest wind around 5 mph becoming light and variable after midnight.

    Low: 24 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 40. Calm wind becoming north around 5 mph.

    High: 40 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 16. Light northeast wind becoming north 8 to 13 mph after midnight. Winds could gust as high as 21 mph.

    Low: 16 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 22. North wind around 14 mph, with gusts as high as 24 mph.

    High: 22 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: A 20 percent chance of snow showers after midnight. Cloudy, with a low around 5. North northeast wind 10 to 14 mph, with gusts as high as 21 mph.

    Low: 5 °F

    Mostly Cloudy
    then Slight
    Chance Snow
    Showers

  • Saturday

    Saturday: Snow showers likely, mainly after noon. Cloudy, with a high near 15. North northeast wind around 11 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.

    High: 15 °F

    Snow Showers
    Likely

  • Saturday Night

    Saturday Night: Snow showers likely, mainly before midnight. Mostly cloudy, with a low around 10. North northeast wind 6 to 10 mph.

    Low: 10 °F

    Snow Showers
    Likely

  • Sunday

    Sunday: A slight chance of snow showers before noon. Mostly cloudy, with a high near 20. North wind 6 to 8 mph.

    High: 20 °F

    Slight Chance
    Snow Showers
    then Mostly
    Cloudy

Detailed Forecast

Today
A slight chance of freezing rain before 8am, then a slight chance of rain showers between 8am and 9am. Partly sunny, with a high near 46. West southwest wind 6 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.
Tonight
Mostly clear, with a low around 24. West southwest wind around 5 mph becoming light and variable after midnight.
Thursday
Mostly sunny, with a high near 40. Calm wind becoming north around 5 mph.
Thursday Night
Mostly cloudy, with a low around 16. Light northeast wind becoming north 8 to 13 mph after midnight. Winds could gust as high as 21 mph.
Friday
Mostly cloudy, with a high near 22. North wind around 14 mph, with gusts as high as 24 mph.
Friday Night
A 20 percent chance of snow showers after midnight. Cloudy, with a low around 5. North northeast wind 10 to 14 mph, with gusts as high as 21 mph.
Saturday
Snow showers likely, mainly after noon. Cloudy, with a high near 15. North northeast wind around 11 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.
Saturday Night
Snow showers likely, mainly before midnight. Mostly cloudy, with a low around 10. North northeast wind 6 to 10 mph.
Sunday
A slight chance of snow showers before noon. Mostly cloudy, with a high near 20. North wind 6 to 8 mph.
Sunday Night
Partly cloudy, with a low around 6. Northwest wind 3 to 5 mph.
Monday
Sunny, with a high near 23. Light and variable wind becoming west northwest around 6 mph in the morning.
Monday Night
Mostly clear, with a low around 7. South southwest wind 3 to 5 mph.
Tuesday
Mostly sunny, with a high near 31. South southwest wind 5 to 8 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Marion IL
 37.73°N 88.95°W
Last Update:
5:46 am CST Jan 21, 2026
Forecast Valid:
7am CST Jan 21, 2026-6pm CST Jan 27, 2026
 
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Additional Resources

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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