Current conditions at

Marion - Williamson County Regional Airport (KMWA)

Lat: 37.77°NLon: 89.01°WElev: 486ft.

Fair

48°F

9°C

Humidity 82%
Wind Speed Vrbl 6 mph
Barometer 30.44 in
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Wind Chill45°F (7°C)
Last update 17 Oct 3:35 am CDT
Extended Forecast for

3 Miles W Marion IL

Frost Advisory October 17, 09:00pm until October 18, 08:00am
Click here for hazard details and duration
Frost Advisory
  • Today

    Today: Sunny, with a high near 61. North northeast wind 8 to 10 mph.

    High: 61 °F

    Sunny

  • Tonight

    Tonight: Areas of frost after 4am.  Otherwise, clear, with a low around 34. Calm wind.

    Low: 34 °F

    Clear then
    Areas Frost

  • Sunday

    Sunday: Areas of frost before 8am.  Otherwise, sunny, with a high near 67. Calm wind becoming east southeast around 5 mph in the morning.

    High: 67 °F

    Areas Frost
    then Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 38. Calm wind.

    Low: 38 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 71. Light and variable wind.

    High: 71 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 41. Calm wind.

    Low: 41 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 75. Calm wind becoming east northeast around 5 mph in the afternoon.

    High: 75 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 43. Calm wind.

    Low: 43 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 78. Light and variable wind.

    High: 78 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 61. North northeast wind 8 to 10 mph.
Tonight
Areas of frost after 4am. Otherwise, clear, with a low around 34. Calm wind.
Sunday
Areas of frost before 8am. Otherwise, sunny, with a high near 67. Calm wind becoming east southeast around 5 mph in the morning.
Sunday Night
Clear, with a low around 38. Calm wind.
Monday
Sunny, with a high near 71. Light and variable wind.
Monday Night
Mostly clear, with a low around 41. Calm wind.
Tuesday
Sunny, with a high near 75. Calm wind becoming east northeast around 5 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 43. Calm wind.
Wednesday
Sunny, with a high near 78. Light and variable wind.
Wednesday Night
Clear, with a low around 45. Calm wind.
Thursday
Sunny, with a high near 81. Light north wind.
Thursday Night
Clear, with a low around 48. Calm wind.
Friday
Sunny, with a high near 82. Calm wind becoming east around 6 mph in the afternoon.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles W Marion IL
 37.74°N 89°W
1:26 am CDT Oct 17, 2026
4am CDT Oct 17, 2026-6pm CDT Oct 23, 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