Current conditions at

Marion - Williamson County Regional Airport (KMWA)

Lat: 37.77°NLon: 89.01°WElev: 486ft.

Fair

28°F

-2°C

Humidity 80%
Wind Speed SW 7 mph
Barometer 29.93 in
Dewpoint 22°F (-6°C)
Visibility 10.00 mi
Wind Chill21°F (-6°C)
Last update 6 Feb 12:35 am CST
Extended Forecast for

Marion IL

  • Overnight

    Overnight: Mostly clear, with a low around 27. West southwest wind around 6 mph.

    Low: 27 °F

    Mostly Clear

  • Friday

    Friday: Increasing clouds, with a high near 47. West southwest wind 6 to 15 mph becoming north northwest in the afternoon. Winds could gust as high as 24 mph.

    High: 47 °F

    Increasing
    Clouds

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 23. North northwest wind 6 to 9 mph.

    Low: 23 °F

    Mostly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 35. North northeast wind around 6 mph becoming light and variable  in the afternoon.

    High: 35 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 24. Calm wind becoming south southeast around 5 mph after midnight.

    Low: 24 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 50. South southwest wind 5 to 8 mph.

    High: 50 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 32. Light south wind.

    Low: 32 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 59. Light southwest wind.

    High: 59 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 42. Calm wind becoming south southwest around 6 mph after midnight.

    Low: 42 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 27. West southwest wind around 6 mph.
Friday
Increasing clouds, with a high near 47. West southwest wind 6 to 15 mph becoming north northwest in the afternoon. Winds could gust as high as 24 mph.
Friday Night
Mostly cloudy, with a low around 23. North northwest wind 6 to 9 mph.
Saturday
Sunny, with a high near 35. North northeast wind around 6 mph becoming light and variable in the afternoon.
Saturday Night
Mostly cloudy, with a low around 24. Calm wind becoming south southeast around 5 mph after midnight.
Sunday
Mostly sunny, with a high near 50. South southwest wind 5 to 8 mph.
Sunday Night
Mostly clear, with a low around 32. Light south wind.
Monday
Sunny, with a high near 59. Light southwest wind.
Monday Night
Partly cloudy, with a low around 42. Calm wind becoming south southwest around 6 mph after midnight.
Tuesday
A chance of showers, mainly after noon. Mostly cloudy, with a high near 65. South southwest wind 6 to 9 mph.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 42. Southwest wind around 7 mph becoming northwest after midnight.
Wednesday
A slight chance of showers. Mostly cloudy, with a high near 54. North northwest wind 6 to 9 mph.
Wednesday Night
A slight chance of showers. Mostly cloudy, with a low around 33. North wind around 5 mph.
Thursday
A slight chance of showers. Mostly cloudy, with a high near 47. North wind 5 to 7 mph.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Marion IL
 37.73°N 88.92°W
12:46 am CST Feb 6, 2026
12am CST Feb 6, 2026-6pm CST Feb 12, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database