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

75°F

24°C

Humidity 65%
Wind Speed Calm
Barometer 30.10 in
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 3 Aug 10:47 am CDT
Extended Forecast for

Carterville IL

  • Today

    Today: Sunny, with a high near 83. North northeast wind 6 to 8 mph.

    High: 83 °F

    Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 67. Northeast wind around 6 mph becoming calm in the evening.

    Low: 67 °F

    Mostly Cloudy

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 81. East northeast wind 3 to 6 mph.

    High: 81 °F

    Mostly Cloudy
    then Chance
    T-storms

  • Monday Night

    Monday Night: A 30 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 67. Light east southeast wind.

    Low: 67 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 84. Calm wind becoming east southeast around 5 mph.

    High: 84 °F

    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 68. Light east southeast wind.

    Low: 68 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 87. Light east southeast wind.

    High: 87 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 69. Calm wind.

    Low: 69 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 88. Light east southeast wind.

    High: 88 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 83. North northeast wind 6 to 8 mph.
Tonight
Mostly cloudy, with a low around 67. Northeast wind around 6 mph becoming calm in the evening.
Monday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 81. East northeast wind 3 to 6 mph.
Monday Night
A 30 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 67. Light east southeast wind.
Tuesday
A 40 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 84. Calm wind becoming east southeast around 5 mph.
Tuesday Night
Mostly clear, with a low around 68. Light east southeast wind.
Wednesday
Mostly sunny, with a high near 87. Light east southeast wind.
Wednesday Night
Mostly clear, with a low around 69. Calm wind.
Thursday
Sunny, with a high near 88. Light east southeast wind.
Thursday Night
Mostly clear, with a low around 70. Calm wind.
Friday
Sunny, with a high near 90. Calm wind becoming south southeast around 6 mph in the morning.
Friday Night
Mostly clear, with a low around 71. South southeast wind 3 to 5 mph.
Saturday
Sunny, with a high near 92. South wind 3 to 7 mph.
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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:
11:31 am CDT Aug 3, 2025
Forecast Valid:
11am CDT Aug 3, 2025-6pm CDT Aug 9, 2025
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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