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Hazardous Weather Conditions

Current conditions at

Marion - Williamson County Regional Airport (KMWA)

Lat: 37.77°NLon: 89.01°WElev: 486ft.

Fair

70°F

21°C

Humidity 64%
Wind Speed S 18 G 28 mph
Barometer 29.47 in
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 19 Feb 5:45 pm CST
Extended Forecast for

Marion IL

  • Tonight

    Tonight: Partly cloudy, with a low around 38. South wind 13 to 15 mph becoming west after midnight. Winds could gust as high as 28 mph.

    Low: 38 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 53. West wind 7 to 15 mph, with gusts as high as 25 mph.

    High: 53 °F

    Sunny

  • Friday Night

    Friday Night: Increasing clouds, with a low around 34. Calm wind becoming north around 5 mph after midnight.

    Low: 34 °F

    Increasing
    Clouds

  • Saturday

    Saturday: A 20 percent chance of showers after noon. Partly sunny, with a high near 47. North wind 5 to 10 mph.

    High: 47 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 25. Northwest wind 7 to 9 mph, with gusts as high as 18 mph.

    Low: 25 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 40. Northwest wind 10 to 17 mph, with gusts as high as 28 mph.

    High: 40 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 19. North northwest wind around 11 mph, with gusts as high as 20 mph.

    Low: 19 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 37. North northwest wind 6 to 13 mph, with gusts as high as 21 mph.

    High: 37 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 19. Light and variable wind.

    Low: 19 °F

    Mostly Clear

Detailed Forecast

Tonight
Partly cloudy, with a low around 38. South wind 13 to 15 mph becoming west after midnight. Winds could gust as high as 28 mph.
Friday
Sunny, with a high near 53. West wind 7 to 15 mph, with gusts as high as 25 mph.
Friday Night
Increasing clouds, with a low around 34. Calm wind becoming north around 5 mph after midnight.
Saturday
A 20 percent chance of showers after noon. Partly sunny, with a high near 47. North wind 5 to 10 mph.
Saturday Night
Mostly clear, with a low around 25. Northwest wind 7 to 9 mph, with gusts as high as 18 mph.
Sunday
Sunny, with a high near 40. Northwest wind 10 to 17 mph, with gusts as high as 28 mph.
Sunday Night
Mostly clear, with a low around 19. North northwest wind around 11 mph, with gusts as high as 20 mph.
Monday
Sunny, with a high near 37. North northwest wind 6 to 13 mph, with gusts as high as 21 mph.
Monday Night
Mostly clear, with a low around 19. Light and variable wind.
Tuesday
Partly sunny, with a high near 48. Light south wind becoming south southwest 8 to 13 mph in the morning. Winds could gust as high as 22 mph.
Tuesday Night
Mostly cloudy, with a low around 40. South southwest wind 11 to 13 mph, with gusts as high as 24 mph.
Wednesday
A slight chance of showers. Mostly cloudy, with a high near 58. South southwest wind 10 to 14 mph, with gusts as high as 24 mph.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 35. Southwest wind 7 to 9 mph becoming north northwest after midnight.
Thursday
A chance of showers. Mostly sunny, with a high near 56. North northwest wind 7 to 10 mph becoming southeast 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:
5:42 pm CST Feb 19, 2026
Forecast Valid:
6pm CST Feb 19, 2026-6pm CST Feb 26, 2026
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation