National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Marion - Williamson County Regional Airport (KMWA)

Lat: 37.77°NLon: 89.01°WElev: 486ft.

Overcast

27°F

-3°C

Humidity 80%
Wind Speed NW 12 mph
Barometer 30.13 in
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Wind Chill16°F (-9°C)
Last update 2 Dec 11:45 am CST
Extended Forecast for

Marion IL

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 34. Northwest wind around 6 mph becoming calm.

    High: 34 °F

    Partly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 22. Calm wind.

    Low: 22 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 43. Light south wind becoming south southwest 5 to 9 mph.

    High: 43 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 21. Light and variable wind becoming north northwest 5 to 10 mph after midnight. Winds could gust as high as 18 mph.

    Low: 21 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 30. North wind 5 to 10 mph becoming light north northeast in the afternoon. Winds could gust as high as 18 mph.

    High: 30 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 17. Calm wind.

    Low: 17 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 39. Calm wind becoming south southwest around 6 mph.

    High: 39 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 26. Calm wind.

    Low: 26 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 43. Calm wind becoming west around 6 mph.

    High: 43 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Partly sunny, with a high near 34. Northwest wind around 6 mph becoming calm.
Tonight
Partly cloudy, with a low around 22. Calm wind.
Wednesday
Mostly sunny, with a high near 43. Light south wind becoming south southwest 5 to 9 mph.
Wednesday Night
Mostly cloudy, with a low around 21. Light and variable wind becoming north northwest 5 to 10 mph after midnight. Winds could gust as high as 18 mph.
Thursday
Mostly sunny, with a high near 30. North wind 5 to 10 mph becoming light north northeast in the afternoon. Winds could gust as high as 18 mph.
Thursday Night
Partly cloudy, with a low around 17. Calm wind.
Friday
Mostly sunny, with a high near 39. Calm wind becoming south southwest around 6 mph.
Friday Night
Partly cloudy, with a low around 26. Calm wind.
Saturday
Mostly sunny, with a high near 43. Calm wind becoming west around 6 mph.
Saturday Night
Mostly cloudy, with a low around 27. Calm wind becoming east northeast around 5 mph after midnight.
Sunday
Partly sunny, with a high near 39. North wind 5 to 8 mph.
Sunday Night
Mostly cloudy, with a low around 22. North wind 3 to 6 mph.
Monday
Mostly sunny, with a high near 39. Light and variable wind becoming west southwest 5 to 7 mph in the morning.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Marion IL
 37.73°N 88.92°W
Last Update:
10:47 am CST Dec 2, 2025
Forecast Valid:
12pm CST Dec 2, 2025-6pm CST Dec 8, 2025
 
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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