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.

Mostly Cloudy

37°F

3°C

Humidity 65%
Wind Speed N 7 mph
Barometer 30.11 in
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Wind Chill32°F (0°C)
Last update 3 Feb 10:45 am CST
Extended Forecast for

Marion IL

  • Today

    Today: A slight chance of rain before noon, then a slight chance of drizzle between noon and 2pm. Mostly cloudy, with a high near 36. North wind 7 to 10 mph. Chance of precipitation is 20%.

    High: 36 °F

    Slight Chance
    Rain

  • Tonight

    Tonight: Mostly cloudy, with a low around 23. North wind 6 to 8 mph.

    Low: 23 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Cloudy, then gradually becoming mostly sunny, with a high near 31. North wind 6 to 10 mph.

    High: 31 °F

    Decreasing
    Clouds

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 14. North wind around 6 mph becoming calm in the evening.

    Low: 14 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 36. Calm wind becoming southwest 5 to 7 mph in the afternoon.

    High: 36 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 28. South southwest wind 6 to 8 mph.

    Low: 28 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 51. West southwest wind 6 to 10 mph becoming north northwest in the afternoon.

    High: 51 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 26. North northwest wind around 5 mph becoming calm in the evening.

    Low: 26 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 44. Calm wind becoming east northeast around 6 mph in the morning.

    High: 44 °F

    Sunny

Detailed Forecast

Today
A slight chance of rain before noon, then a slight chance of drizzle between noon and 2pm. Mostly cloudy, with a high near 36. North wind 7 to 10 mph. Chance of precipitation is 20%.
Tonight
Mostly cloudy, with a low around 23. North wind 6 to 8 mph.
Wednesday
Cloudy, then gradually becoming mostly sunny, with a high near 31. North wind 6 to 10 mph.
Wednesday Night
Partly cloudy, with a low around 14. North wind around 6 mph becoming calm in the evening.
Thursday
Partly sunny, with a high near 36. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 28. South southwest wind 6 to 8 mph.
Friday
Sunny, with a high near 51. West southwest wind 6 to 10 mph becoming north northwest in the afternoon.
Friday Night
Mostly clear, with a low around 26. North northwest wind around 5 mph becoming calm in the evening.
Saturday
Sunny, with a high near 44. Calm wind becoming east northeast around 6 mph in the morning.
Saturday Night
Partly cloudy, with a low around 27. East southeast wind 3 to 6 mph.
Sunday
Mostly sunny, with a high near 44. Northeast wind 5 to 7 mph.
Sunday Night
Partly cloudy, with a low around 26. Light east northeast wind.
Monday
Partly sunny, with a high near 43. Light and variable wind becoming east around 6 mph in the morning.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Marion IL
 37.73°N 88.95°W
Last Update:
10:57 am CST Feb 3, 2026
Forecast Valid:
11am CST Feb 3, 2026-6pm CST Feb 9, 2026
 
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Additional Resources

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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