National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Marion - Williamson County Regional Airport (KMWA)

Lat: 37.77°NLon: 89.01°WElev: 486ft.

Mostly Cloudy and Breezy

48°F

9°C

Humidity 34%
Wind Speed S 23 G 35 mph
Barometer 30.00 in
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Wind Chill40°F (4°C)
Last update 11 Nov 12:45 pm CST
Extended Forecast for

Carterville IL

  • Veterans Day

    Veterans Day: Mostly cloudy early, then gradual clearing, with a high near 50. South southwest wind around 18 mph, with gusts as high as 29 mph.

    High: 50 °F

    Becoming
    Sunny

  • Tonight

    Tonight: Clear, with a low around 37. Southwest wind 6 to 16 mph, with gusts as high as 24 mph.

    Low: 37 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 65. West northwest wind 3 to 8 mph.

    High: 65 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 37. Calm wind.

    Low: 37 °F

    Mostly Clear

  • Thursday

    Thursday: Partly sunny, with a high near 63. Calm wind becoming south around 6 mph in the afternoon.

    High: 63 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 47. South wind 3 to 6 mph.

    Low: 47 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 72. South southwest wind 6 to 10 mph.

    High: 72 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 57. South southwest wind 6 to 8 mph.

    Low: 57 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 75. South southwest wind 9 to 15 mph, with gusts as high as 23 mph.

    High: 75 °F

    Mostly Sunny

Detailed Forecast

Veterans Day
Mostly cloudy early, then gradual clearing, with a high near 50. South southwest wind around 18 mph, with gusts as high as 29 mph.
Tonight
Clear, with a low around 37. Southwest wind 6 to 16 mph, with gusts as high as 24 mph.
Wednesday
Sunny, with a high near 65. West northwest wind 3 to 8 mph.
Wednesday Night
Mostly clear, with a low around 37. Calm wind.
Thursday
Partly sunny, with a high near 63. Calm wind becoming south around 6 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 47. South wind 3 to 6 mph.
Friday
Mostly sunny, with a high near 72. South southwest wind 6 to 10 mph.
Friday Night
Partly cloudy, with a low around 57. South southwest wind 6 to 8 mph.
Saturday
Mostly sunny, with a high near 75. South southwest wind 9 to 15 mph, with gusts as high as 23 mph.
Saturday Night
Partly cloudy, with a low around 55. West southwest wind 9 to 13 mph, with gusts as high as 20 mph.
Sunday
A chance of showers. Mostly sunny, with a high near 69. West southwest wind 8 to 11 mph becoming northwest in the afternoon.
Sunday Night
A chance of showers. Partly cloudy, with a low around 47. Northwest wind 5 to 7 mph becoming northeast after midnight.
Monday
A chance of showers and thunderstorms. Partly sunny, with a high near 60. East southeast wind 6 to 8 mph.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Carterville IL
 37.78°N 89.09°W
Last Update:
12:11 pm CST Nov 11, 2025
Forecast Valid:
12pm CST Nov 11, 2025-6pm CST Nov 17, 2025
 
Forecast Discussion
 
Get as KML Get as XML

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