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

25°F

-4°C

Humidity 74%
Wind Speed Calm
Barometer 30.08 in
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Last update 17 Jan 7:47 am CST
Extended Forecast for

Marion IL

  • Today

    Today: Snow showers likely, mainly between 10am and 1pm, then a chance of flurries after 1pm. Partly sunny, with a high near 32. West northwest wind 6 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. Total daytime snow accumulation of less than a half inch possible.

    High: 32 °F

    Snow Showers
    Likely

  • Tonight

    Tonight: Mostly clear, with a low around 14. West northwest wind 6 to 11 mph, with gusts as high as 21 mph.

    Low: 14 °F

    Mostly Clear

  • Sunday

    Sunday: Increasing clouds, with a high near 32. Light west wind becoming southwest 8 to 13 mph in the morning. Winds could gust as high as 21 mph.

    High: 32 °F

    Increasing
    Clouds

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 16. Southwest wind 8 to 10 mph becoming northwest after midnight. Winds could gust as high as 21 mph.

    Low: 16 °F

    Partly Cloudy

  • M.L.King Day

    M.L.King Day: Mostly sunny, with a high near 25. Northwest wind 6 to 13 mph, with gusts as high as 22 mph.

    High: 25 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 11. Light and variable wind.

    Low: 11 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 36. Light southwest wind becoming south southwest 6 to 11 mph in the morning. Winds could gust as high as 20 mph.

    High: 36 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 28. South wind 10 to 14 mph, with gusts as high as 25 mph.

    Low: 28 °F

    Mostly Clear

  • Wednesday

    Wednesday: Partly sunny, with a high near 46. Southwest wind 7 to 14 mph, with gusts as high as 24 mph.

    High: 46 °F

    Partly Sunny

Detailed Forecast

Today
Snow showers likely, mainly between 10am and 1pm, then a chance of flurries after 1pm. Partly sunny, with a high near 32. West northwest wind 6 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. Total daytime snow accumulation of less than a half inch possible.
Tonight
Mostly clear, with a low around 14. West northwest wind 6 to 11 mph, with gusts as high as 21 mph.
Sunday
Increasing clouds, with a high near 32. Light west wind becoming southwest 8 to 13 mph in the morning. Winds could gust as high as 21 mph.
Sunday Night
Partly cloudy, with a low around 16. Southwest wind 8 to 10 mph becoming northwest after midnight. Winds could gust as high as 21 mph.
M.L.King Day
Mostly sunny, with a high near 25. Northwest wind 6 to 13 mph, with gusts as high as 22 mph.
Monday Night
Mostly clear, with a low around 11. Light and variable wind.
Tuesday
Sunny, with a high near 36. Light southwest wind becoming south southwest 6 to 11 mph in the morning. Winds could gust as high as 20 mph.
Tuesday Night
Mostly clear, with a low around 28. South wind 10 to 14 mph, with gusts as high as 25 mph.
Wednesday
Partly sunny, with a high near 46. Southwest wind 7 to 14 mph, with gusts as high as 24 mph.
Wednesday Night
A slight chance of rain showers before midnight, then a chance of rain and snow showers. Mostly cloudy, with a low around 24. Southwest wind around 6 mph becoming north after midnight.
Thursday
A slight chance of rain and snow showers. Mostly sunny, with a high near 36. North wind 5 to 7 mph.
Thursday Night
A slight chance of snow showers. Partly cloudy, with a low around 20. Light and variable wind becoming east around 5 mph after midnight.
Friday
A slight chance of showers. Mostly sunny, with a high near 38. East southeast wind 5 to 8 mph becoming south southwest in the afternoon.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Marion IL
 37.73°N 88.92°W
Last Update:
6:51 am CST Jan 17, 2026
Forecast Valid:
8am CST Jan 17, 2026-6pm CST Jan 23, 2026
 
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