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Hazardous Weather Conditions

Current conditions at

Marion - Williamson County Regional Airport (KMWA)

Lat: 37.77°NLon: 89.01°WElev: 486ft.

Overcast

77°F

25°C

Humidity 65%
Wind Speed W 7 mph
Barometer 29.96 in
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 15 Oct 11:55 pm CDT
Extended Forecast for

Marion IL

  • Overnight

    Overnight: Showers likely, mainly before 3am. Mostly cloudy, with a low around 49. Northwest wind 8 to 16 mph, with gusts as high as 30 mph. Chance of precipitation is 70%.

    Low: 49 °F

    Showers
    Likely

  • Friday

    Friday: A 10 percent chance of showers before 7am. Mostly cloudy, with a high near 57. Northwest wind 15 to 18 mph, with gusts as high as 29 mph.

    High: 57 °F

    Slight Chance
    Showers then
    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 41. North wind 11 to 16 mph, with gusts as high as 24 mph.

    Low: 41 °F

    Mostly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 61. North northeast wind 8 to 11 mph.

    High: 61 °F

    Sunny

  • Saturday Night

    Saturday Night: Areas of frost after 5am. Otherwise, clear, with a low around 36. Calm wind.

    Low: 36 °F

    Clear then
    Areas Frost

  • Sunday

    Sunday: Areas of frost before 8am. Otherwise, sunny, with a high near 67. Calm wind becoming south southeast around 6 mph in the morning.

    High: 67 °F

    Areas Frost
    then Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 40. Calm wind.

    Low: 40 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 72. Calm wind becoming south around 5 mph in the afternoon.

    High: 72 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 44. Calm wind.

    Low: 44 °F

    Partly Cloudy

Detailed Forecast

Overnight
Showers likely, mainly before 3am. Mostly cloudy, with a low around 49. Northwest wind 8 to 16 mph, with gusts as high as 30 mph. Chance of precipitation is 70%.
Friday
A 10 percent chance of showers before 7am. Mostly cloudy, with a high near 57. Northwest wind 15 to 18 mph, with gusts as high as 29 mph.
Friday Night
Mostly cloudy, with a low around 41. North wind 11 to 16 mph, with gusts as high as 24 mph.
Saturday
Sunny, with a high near 61. North northeast wind 8 to 11 mph.
Saturday Night
Areas of frost after 5am. Otherwise, clear, with a low around 36. Calm wind.
Sunday
Areas of frost before 8am. Otherwise, sunny, with a high near 67. Calm wind becoming south southeast around 6 mph in the morning.
Sunday Night
Mostly clear, with a low around 40. Calm wind.
Monday
Sunny, with a high near 72. Calm wind becoming south around 5 mph in the afternoon.
Monday Night
Partly cloudy, with a low around 44. Calm wind.
Tuesday
Mostly sunny, with a high near 76. Calm wind becoming east southeast around 5 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 46. Calm wind.
Wednesday
Sunny, with a high near 77. Calm wind becoming east northeast around 5 mph in the afternoon.
Wednesday Night
Clear, with a low around 47. Calm wind.
Thursday
Sunny, with a high near 80. Calm wind becoming south southeast around 6 mph in the afternoon.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Marion IL
 37.73°N 88.95°W
Last Update:
12:11 am CDT Oct 16, 2026
Forecast Valid:
12am CDT Oct 16, 2026-6pm CDT Oct 22, 2026
 
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Additional Resources

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Chance of Precipitation