Current conditions at

Marion - Williamson County Regional Airport (KMWA)

Lat: 37.77°NLon: 89.01°WElev: 486ft.

Overcast

37°F

3°C

Humidity 61%
Wind Speed NE 7 mph
Barometer 30.09 in
Dewpoint 24°F (-4°C)
Visibility 10.00 mi
Wind Chill32°F (0°C)
Last update 21 Feb 3:35 am CST
Extended Forecast for

Marion IL

  • Overnight

    Overnight: A 20 percent chance of snow showers before 4am.  Mostly cloudy, with a steady temperature around 35. Light north northeast wind.

    Low: 35 °F

    Slight Chance
    Snow Showers

  • Saturday

    Saturday: A chance of snow showers before 1pm, then a chance of sprinkles between 1pm and 2pm.  Partly sunny, with a high near 42. North wind 5 to 8 mph.  Chance of precipitation is 20%.

    High: 42 °F

    Slight Chance
    Snow Showers
    then Slight
    Chance
    Sprinkles/Snow

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 24. Northwest wind 6 to 11 mph, with gusts as high as 21 mph.

    Low: 24 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 36. Northwest wind 11 to 18 mph, with gusts as high as 30 mph.

    High: 36 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 17. Northwest wind around 14 mph, with gusts as high as 23 mph.

    Low: 17 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 34. North northwest wind 8 to 14 mph, with gusts as high as 23 mph.

    High: 34 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 17. Northwest wind around 6 mph becoming calm  in the evening.

    Low: 17 °F

    Mostly Clear

  • Tuesday

    Tuesday: Partly sunny, with a high near 49. Light south wind becoming south southwest 9 to 14 mph in the morning. Winds could gust as high as 24 mph.

    High: 49 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 40. South southwest wind around 11 mph, with gusts as high as 22 mph.

    Low: 40 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A 20 percent chance of snow showers before 4am. Mostly cloudy, with a steady temperature around 35. Light north northeast wind.
Saturday
A chance of snow showers before 1pm, then a chance of sprinkles between 1pm and 2pm. Partly sunny, with a high near 42. North wind 5 to 8 mph. Chance of precipitation is 20%.
Saturday Night
Mostly clear, with a low around 24. Northwest wind 6 to 11 mph, with gusts as high as 21 mph.
Sunday
Sunny, with a high near 36. Northwest wind 11 to 18 mph, with gusts as high as 30 mph.
Sunday Night
Mostly clear, with a low around 17. Northwest wind around 14 mph, with gusts as high as 23 mph.
Monday
Sunny, with a high near 34. North northwest wind 8 to 14 mph, with gusts as high as 23 mph.
Monday Night
Mostly clear, with a low around 17. Northwest wind around 6 mph becoming calm in the evening.
Tuesday
Partly sunny, with a high near 49. Light south wind becoming south southwest 9 to 14 mph in the morning. Winds could gust as high as 24 mph.
Tuesday Night
Mostly cloudy, with a low around 40. South southwest wind around 11 mph, with gusts as high as 22 mph.
Wednesday
Partly sunny, with a high near 62. South southwest wind 10 to 15 mph, with gusts as high as 23 mph.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 41. South southwest wind 7 to 10 mph becoming northwest after midnight.
Thursday
A chance of showers. Partly sunny, with a high near 54. Northwest wind 7 to 9 mph.
Thursday Night
A slight chance of showers. Mostly clear, with a low around 31. Northwest wind around 6 mph becoming light and variable in the evening.
Friday
Sunny, with a high near 59. Light south southwest wind increasing to 5 to 9 mph in the morning.
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ABOUT THIS FORECAST

 
Point Forecast:
Marion IL
 37.73°N 88.92°W
3:17 am CST Feb 21, 2026
3am CST Feb 21, 2026-6pm CST Feb 27, 2026
 
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Additional Resources

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