National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
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 *** Not a current observation ***
Extended Forecast for

3 Miles SE Marion IL

  • Today

    Today: Mostly sunny, with a high near 76. Southwest wind 10 to 17 mph, with gusts as high as 24 mph.

    High: 76 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 46. Southwest wind 6 to 8 mph becoming north after midnight.

    Low: 46 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 60. North wind 3 to 8 mph.

    High: 60 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 35. Calm wind.

    Low: 35 °F

    Mostly Clear

  • Monday

    Monday: A 20 percent chance of showers after noon. Mostly sunny, with a high near 60. Calm wind becoming east southeast 5 to 7 mph in the morning.

    High: 60 °F

    Sunny then
    Slight Chance
    Showers

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm. Low around 48. Southeast wind 6 to 9 mph. Chance of precipitation is 80%.

    Low: 48 °F

    Showers

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms before noon. Partly sunny, with a high near 72. South wind 8 to 11 mph becoming north northwest in the afternoon. Winds could gust as high as 18 mph.

    High: 72 °F

    Chance
    Showers then
    Partly Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of showers. Partly cloudy, with a low around 48. North wind 3 to 6 mph.

    Low: 48 °F

    Slight Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers. Partly sunny, with a high near 65. Light and variable wind becoming southeast 5 to 7 mph in the morning.

    High: 65 °F

    Chance
    Showers

Detailed Forecast

Today
Mostly sunny, with a high near 76. Southwest wind 10 to 17 mph, with gusts as high as 24 mph.
Tonight
Mostly clear, with a low around 46. Southwest wind 6 to 8 mph becoming north after midnight.
Sunday
Sunny, with a high near 60. North wind 3 to 8 mph.
Sunday Night
Mostly clear, with a low around 35. Calm wind.
Monday
A 20 percent chance of showers after noon. Mostly sunny, with a high near 60. Calm wind becoming east southeast 5 to 7 mph in the morning.
Monday Night
Showers and possibly a thunderstorm. Low around 48. Southeast wind 6 to 9 mph. Chance of precipitation is 80%.
Tuesday
A 30 percent chance of showers and thunderstorms before noon. Partly sunny, with a high near 72. South wind 8 to 11 mph becoming north northwest in the afternoon. Winds could gust as high as 18 mph.
Tuesday Night
A slight chance of showers. Partly cloudy, with a low around 48. North wind 3 to 6 mph.
Wednesday
A chance of showers. Partly sunny, with a high near 65. Light and variable wind becoming southeast 5 to 7 mph in the morning.
Wednesday Night
Showers likely, mainly after midnight. Mostly cloudy, with a low around 52. Southeast wind 3 to 6 mph.
Thursday
Showers and possibly a thunderstorm. Mostly cloudy, with a high near 68. South southeast wind 6 to 11 mph, with gusts as high as 18 mph.
Thursday Night
Showers likely. Mostly cloudy, with a low around 54. South southeast wind 7 to 10 mph.
Friday
A chance of showers. Mostly cloudy, with a high near 68. Southwest wind 10 to 13 mph, with gusts as high as 20 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SE Marion IL
 37.71°N 88.89°W
Last Update:
3:16 am CST Nov 15, 2025
Forecast Valid:
5am CST Nov 15, 2025-6pm CST Nov 21, 2025
 
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