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.

Fair

66°F

19°C

Humidity 46%
Wind Speed Calm
Barometer 30.24 in
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 10 Oct 12:45 pm CDT
Extended Forecast for

Carterville IL

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 74. Calm wind becoming south around 6 mph.

    High: 74 °F

    Mostly Sunny

  • Tonight

    Tonight: A chance of sprinkles before 1am. Mostly cloudy, with a low around 52. Light south southeast wind.

    Low: 52 °F

    Chance
    Sprinkles

  • Saturday

    Saturday: Cloudy through mid morning, then gradual clearing, with a high near 77. Calm wind becoming north northeast around 5 mph in the afternoon.

    High: 77 °F

    Gradual
    Clearing

  • Saturday Night

    Saturday Night: Patchy fog after 1am. Otherwise, mostly clear, with a low around 48. Calm wind.

    Low: 48 °F

    Mostly Clear
    then Patchy
    Fog

  • Sunday

    Sunday: Sunny, with a high near 78. Calm wind becoming east southeast around 6 mph in the afternoon.

    High: 78 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 49. Light east southeast wind.

    Low: 49 °F

    Mostly Clear

  • Columbus Day

    Columbus Day: Sunny, with a high near 80. Calm wind becoming south southeast around 5 mph in the afternoon.

    High: 80 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 56. Light north wind.

    Low: 56 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 80. Calm wind becoming north 5 to 7 mph in the morning.

    High: 80 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 74. Calm wind becoming south around 6 mph.
Tonight
A chance of sprinkles before 1am. Mostly cloudy, with a low around 52. Light south southeast wind.
Saturday
Cloudy through mid morning, then gradual clearing, with a high near 77. Calm wind becoming north northeast around 5 mph in the afternoon.
Saturday Night
Patchy fog after 1am. Otherwise, mostly clear, with a low around 48. Calm wind.
Sunday
Sunny, with a high near 78. Calm wind becoming east southeast around 6 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 49. Light east southeast wind.
Columbus Day
Sunny, with a high near 80. Calm wind becoming south southeast around 5 mph in the afternoon.
Monday Night
Partly cloudy, with a low around 56. Light north wind.
Tuesday
Mostly sunny, with a high near 80. Calm wind becoming north 5 to 7 mph in the morning.
Tuesday Night
Mostly clear, with a low around 56. Light north wind.
Wednesday
Sunny, with a high near 76. North wind 3 to 7 mph.
Wednesday Night
Mostly clear, with a low around 52. North wind around 5 mph becoming calm in the evening.
Thursday
Sunny, with a high near 75. Calm wind becoming north northeast around 6 mph in the morning.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Carterville IL
 37.76°N 89.09°W
Last Update:
1:16 pm CDT Oct 10, 2025
Forecast Valid:
1pm CDT Oct 10, 2025-6pm CDT Oct 16, 2025
 
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Additional Resources

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High Temperature

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Chance of Precipitation