Hazardous Weather Conditions
Current conditions at
Marion - Williamson County Regional Airport (KMWA)
Lat: 37.77°NLon: 89.01°WElev: 486ft.
Overcast
25°F
-4°C
| Humidity | 69% |
| Wind Speed | S 10 mph |
| Barometer | 30.26 in |
| Dewpoint | 16°F (-9°C) |
| Visibility | 10.00 mi |
| Wind Chill | 15°F (-9°C) |
| Last update | 1 Feb 5:45 pm CST |
Extended Forecast for
4 Miles SSW Carterville IL
Tonight
Low: 19 °F
Chance Snow
then Partly
CloudyMonday

High: 39 °F
Mostly Sunny
Monday Night

Low: 28 °F
Mostly Cloudy
Tuesday

High: 37 °F
Chance Wintry
MixTuesday Night

Low: 21 °F
Mostly Cloudy
Wednesday

High: 31 °F
Partly Sunny
Wednesday Night

Low: 15 °F
Partly Cloudy
Thursday

High: 37 °F
Mostly Sunny
Thursday Night

Low: 30 °F
Mostly Clear
Detailed Forecast
Tonight
A 50 percent chance of snow before 11pm. Cloudy, then gradually becoming partly cloudy, with a low around 19. South wind 5 to 7 mph becoming calm after midnight.
Monday
Mostly sunny, with a high near 39. Light and variable wind.
Monday Night
Mostly cloudy, with a low around 28. Calm wind.
Tuesday
A chance of snow before 9am, then a chance of rain, snow, and freezing rain between 9am and 3pm, then a chance of snow after 3pm. Cloudy, with a high near 37. Calm wind becoming north northeast around 6 mph in the morning. Chance of precipitation is 40%.
Tuesday Night
Mostly cloudy, with a low around 21. North wind 3 to 6 mph.
Wednesday
Partly sunny, with a high near 31. North wind around 6 mph.
Wednesday Night
Partly cloudy, with a low around 15. Light north northwest wind.
Thursday
Mostly sunny, with a high near 37. Calm wind becoming southwest around 6 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 30. South southwest wind around 7 mph.
Friday
Mostly sunny, with a high near 47. West southwest wind 7 to 9 mph becoming north northwest in the afternoon.
Friday Night
Partly cloudy, with a low around 23. North wind 3 to 6 mph.
Saturday
Sunny, with a high near 37. Light and variable wind becoming north northeast around 6 mph in the morning.
Saturday Night
Partly cloudy, with a low around 25. East wind around 6 mph becoming south southeast after midnight.
Sunday
Mostly sunny, with a high near 41. South southwest wind 5 to 7 mph.
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ABOUT THIS FORECAST
Point Forecast:
4 Miles SSW Carterville IL
37.72°N 89.12°W
37.72°N 89.12°W
3:16 pm CST Feb 1, 2026
6pm CST Feb 1, 2026-6pm CST Feb 8, 2026



