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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

34°F

1°C

Humidity 49%
Wind Speed NW 5 mph
Barometer 30.32 in
Dewpoint 17°F (-8°C)
Visibility 10.00 mi
Wind Chill29°F (-2°C)
Last update 22 Jan 2:15 am CST
Extended Forecast for

Marion IL

Winter Storm Watch January 24, 12:00am until January 25, 12:00pm
Click here for hazard details and duration
Winter Storm Watch

  • Overnight

    Overnight: Mostly clear, with a low around 26. North northwest wind around 7 mph.

    Low: 26 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 41. North northwest wind 3 to 6 mph.

    High: 41 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 17. Light and variable wind becoming north 6 to 11 mph after midnight. Winds could gust as high as 23 mph.

    Low: 17 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 23. North wind around 14 mph, with gusts as high as 24 mph.

    High: 23 °F

    Partly Sunny

  • Friday Night

    Friday Night: A 20 percent chance of snow showers after midnight. Cloudy, with a low around 8. North northeast wind 10 to 14 mph, with gusts as high as 22 mph.

    Low: 8 °F

    Mostly Cloudy
    then Slight
    Chance Snow
    Showers

  • Saturday

    Saturday: Snow showers. High near 16. Northeast wind around 11 mph, with gusts as high as 21 mph. Chance of precipitation is 90%.

    High: 16 °F

    Snow Showers
    Likely then
    Snow Showers

  • Saturday Night

    Saturday Night: Snow showers before 9pm, then snow showers, possibly mixed with sleet between 9pm and 3am, then snow showers after 3am. Low around 12. North northeast wind 7 to 10 mph. Chance of precipitation is 90%.

    Low: 12 °F

    Snow/Sleet

  • Sunday

    Sunday: A chance of snow showers, mainly before noon. Mostly cloudy, with a high near 19. North wind 8 to 10 mph, with gusts as high as 18 mph.

    High: 19 °F

    Chance Snow
    Showers

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 3. West northwest wind 5 to 7 mph.

    Low: 3 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 26. North northwest wind around 7 mph.
Thursday
Mostly sunny, with a high near 41. North northwest wind 3 to 6 mph.
Thursday Night
Partly cloudy, with a low around 17. Light and variable wind becoming north 6 to 11 mph after midnight. Winds could gust as high as 23 mph.
Friday
Partly sunny, with a high near 23. 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 8. North northeast wind 10 to 14 mph, with gusts as high as 22 mph.
Saturday
Snow showers. High near 16. Northeast wind around 11 mph, with gusts as high as 21 mph. Chance of precipitation is 90%.
Saturday Night
Snow showers before 9pm, then snow showers, possibly mixed with sleet between 9pm and 3am, then snow showers after 3am. Low around 12. North northeast wind 7 to 10 mph. Chance of precipitation is 90%.
Sunday
A chance of snow showers, mainly before noon. Mostly cloudy, with a high near 19. North wind 8 to 10 mph, with gusts as high as 18 mph.
Sunday Night
Mostly cloudy, with a low around 3. West northwest wind 5 to 7 mph.
Monday
Sunny, with a high near 21. West northwest wind 5 to 7 mph becoming southwest in the afternoon.
Monday Night
Mostly clear, with a low around 7. South southwest wind around 5 mph.
Tuesday
Mostly sunny, with a high near 32. South southwest wind 5 to 7 mph.
Tuesday Night
Mostly cloudy, with a low around 18. Southwest wind 3 to 5 mph.
Wednesday
Partly sunny, with a high near 32. West northwest wind 5 to 8 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Marion IL
 37.73°N 88.92°W
Last Update:
1:26 am CST Jan 22, 2026
Forecast Valid:
2am CST Jan 22, 2026-6pm CST Jan 28, 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