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 W 6 mph
Barometer 30.11 in
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Wind Chill20°F (-7°C)
Last update 2 Dec 1:45 pm CST
Extended Forecast for

4 Miles SSW Marion IL

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 32. Light northwest wind.

    High: 32 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 21. Calm wind.

    Low: 21 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 42. South southwest wind 3 to 8 mph.

    High: 42 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 22. Light and variable wind becoming north 5 to 10 mph after midnight. Winds could gust as high as 18 mph.

    Low: 22 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Partly sunny, with a high near 31. North wind 5 to 10 mph becoming light north northeast in the afternoon. Winds could gust as high as 18 mph.

    High: 31 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: A 20 percent chance of snow after midnight. Partly cloudy, with a low around 19. Calm wind.

    Low: 19 °F

    Partly Cloudy
    then Slight
    Chance Snow

  • Friday

    Friday: Mostly sunny, with a high near 39. Calm wind becoming south southwest around 5 mph.

    High: 39 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 25. Calm wind.

    Low: 25 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 43. Calm wind becoming west southwest around 5 mph.

    High: 43 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 32. Light northwest wind.
Tonight
Partly cloudy, with a low around 21. Calm wind.
Wednesday
Mostly sunny, with a high near 42. South southwest wind 3 to 8 mph.
Wednesday Night
Increasing clouds, with a low around 22. Light and variable wind becoming north 5 to 10 mph after midnight. Winds could gust as high as 18 mph.
Thursday
Partly sunny, with a high near 31. North wind 5 to 10 mph becoming light north northeast in the afternoon. Winds could gust as high as 18 mph.
Thursday Night
A 20 percent chance of snow after midnight. Partly cloudy, with a low around 19. Calm wind.
Friday
Mostly sunny, with a high near 39. Calm wind becoming south southwest around 5 mph.
Friday Night
Partly cloudy, with a low around 25. Calm wind.
Saturday
Mostly sunny, with a high near 43. Calm wind becoming west southwest around 5 mph.
Saturday Night
Mostly cloudy, with a low around 27. Light east southeast wind.
Sunday
A slight chance of showers. Partly sunny, with a high near 41. Light and variable wind becoming east 5 to 7 mph in the morning.
Sunday Night
A slight chance of showers. Mostly cloudy, with a low around 25. North wind 3 to 5 mph.
Monday
Partly sunny, with a high near 37. North wind around 6 mph becoming light and variable in the afternoon.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSW Marion IL
 37.67°N 88.98°W
Last Update:
1:51 pm CST Dec 2, 2025
Forecast Valid:
2pm CST Dec 2, 2025-6pm CST Dec 8, 2025
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation