Current conditions at

Marion - Williamson County Regional Airport (KMWA)

Lat: 37.77°NLon: 89.01°WElev: 486ft.

Fair

65°F

18°C

Humidity 92%
Wind Speed Calm
Barometer 30.24 in
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 3 Oct 5:15 am CDT
Extended Forecast for

Marion IL

  • Today

    Today: A slight chance of sprinkles after 5pm.  Sunny, with a high near 87. South wind 5 to 8 mph.

    High: 87 °F

    Slight Chance
    Sprinkles

  • Tonight

    Tonight: A slight chance of sprinkles before 8pm.  Mostly clear, with a low around 61. Light south wind.

    Low: 61 °F

    Slight Chance
    Sprinkles

  • Saturday

    Saturday: Sunny, with a high near 86. Calm wind becoming south southeast 5 to 7 mph in the afternoon.

    High: 86 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 58. Light southeast wind.

    Low: 58 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 86. Light south southeast wind becoming south 5 to 9 mph in the morning.

    High: 86 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 63. Light south southeast wind.

    Low: 63 °F

    Mostly Clear

  • Monday

    Monday: A 20 percent chance of showers.  Mostly sunny, with a high near 85. Calm wind becoming south around 6 mph in the morning.

    High: 85 °F

    Slight Chance
    Showers

  • Monday Night

    Monday Night: A slight chance of showers and thunderstorms after 1am.  Partly cloudy, with a low around 63. Calm wind.

    Low: 63 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Tuesday

    Tuesday: A chance of showers, with thunderstorms also possible after 1pm.  Mostly sunny, with a high near 83. Calm wind becoming northeast around 6 mph in the afternoon.

    High: 83 °F

    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

Today
A slight chance of sprinkles after 5pm. Sunny, with a high near 87. South wind 5 to 8 mph.
Tonight
A slight chance of sprinkles before 8pm. Mostly clear, with a low around 61. Light south wind.
Saturday
Sunny, with a high near 86. Calm wind becoming south southeast 5 to 7 mph in the afternoon.
Saturday Night
Clear, with a low around 58. Light southeast wind.
Sunday
Sunny, with a high near 86. Light south southeast wind becoming south 5 to 9 mph in the morning.
Sunday Night
Mostly clear, with a low around 63. Light south southeast wind.
Monday
A 20 percent chance of showers. Mostly sunny, with a high near 85. Calm wind becoming south around 6 mph in the morning.
Monday Night
A slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 63. Calm wind.
Tuesday
A chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 83. Calm wind becoming northeast around 6 mph in the afternoon.
Tuesday Night
A chance of showers and thunderstorms before 1am, then a slight chance of showers. Mostly cloudy, with a low around 60. Calm wind becoming north northeast around 6 mph after midnight.
Wednesday
Mostly sunny, with a high near 76. North northeast wind 8 to 10 mph.
Wednesday Night
Mostly clear, with a low around 52. Northeast wind 5 to 7 mph.
Thursday
Sunny, with a high near 74. East northeast wind 6 to 8 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
4:45 am CDT Oct 3, 2025
5am CDT Oct 3, 2025-6pm CDT Oct 9, 2025
 
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