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.

Fair

54°F

12°C

Humidity 63%
Wind Speed SW 5 mph
Barometer 30.04 in
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Wind Chill53°F (12°C)
Last update 10 Nov 11:55 pm CST
Extended Forecast for

Carterville IL

  • Overnight

    Overnight: Mostly clear, with a low around 46. Calm wind.

    Low: 46 °F

    Mostly Clear

  • Veterans Day

    Veterans Day: Partly sunny, then gradually becoming sunny, with a high near 72. Light and variable wind becoming west southwest 8 to 13 mph in the morning. Winds could gust as high as 21 mph.

    High: 72 °F

    Becoming
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 41. Northwest wind around 10 mph.

    Low: 41 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 53. North northwest wind 8 to 14 mph, with gusts as high as 22 mph.

    High: 53 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 30. North northwest wind 5 to 10 mph.

    Low: 30 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 47. North northwest wind 6 to 10 mph.

    High: 47 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 26. Light north northwest wind.

    Low: 26 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 49. Calm wind.

    High: 49 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 28. Calm wind.

    Low: 28 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 46. Calm wind.
Veterans Day
Partly sunny, then gradually becoming sunny, with a high near 72. Light and variable wind becoming west southwest 8 to 13 mph in the morning. Winds could gust as high as 21 mph.
Wednesday Night
Mostly clear, with a low around 41. Northwest wind around 10 mph.
Thursday
Mostly sunny, with a high near 53. North northwest wind 8 to 14 mph, with gusts as high as 22 mph.
Thursday Night
Partly cloudy, with a low around 30. North northwest wind 5 to 10 mph.
Friday
Sunny, with a high near 47. North northwest wind 6 to 10 mph.
Friday Night
Mostly clear, with a low around 26. Light north northwest wind.
Saturday
Sunny, with a high near 49. Calm wind.
Saturday Night
Mostly clear, with a low around 28. Calm wind.
Sunday
Mostly sunny, with a high near 53. Calm wind becoming east southeast around 6 mph.
Sunday Night
Partly cloudy, with a low around 32. Calm wind.
Monday
Mostly sunny, with a high near 54. Calm wind becoming east around 6 mph.
Monday Night
Mostly clear, with a low around 33. Calm wind.
Tuesday
Sunny, with a high near 57. Calm wind becoming east around 5 mph.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Carterville IL
 37.76°N 89.09°W
Last Update:
5:46 pm CST Nov 10, 2026
Forecast Valid:
12am CST Nov 11, 2026-6pm CST Nov 17, 2026
 
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