Hazardous Weather Conditions
Current conditions at
Marion - Williamson County Regional Airport (KMWA)
Lat: 37.77°NLon: 89.01°WElev: 486ft.
Overcast
81°F
27°C
| Humidity | 79% |
| Wind Speed | S 9 mph |
| Barometer | 29.99 in |
| Dewpoint | 73°F (23°C) |
| Visibility | 10.00 mi |
| Heat Index | 86°F (30°C) |
| Last update | 15 Oct 12:45 pm CDT |
Extended Forecast for
Carterville IL
This Afternoon
High: 87 °F
Showers
LikelyTonight
Low: 49 °F
Chance
T-storms then
Chance
ShowersFriday
High: 58 °F
Slight Chance
Showers then
Partly SunnyFriday Night
Low: 40 °F
Mostly Cloudy
Saturday
High: 60 °F
Sunny
Saturday Night
Low: 36 °F
Clear then
Areas FrostSunday
High: 66 °F
Areas Frost
then SunnySunday Night
Low: 40 °F
Mostly Clear
Monday
High: 71 °F
Sunny
Detailed Forecast
This Afternoon
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 4pm. Mostly sunny, with a high near 87. East wind 5 to 11 mph becoming southwest. Winds could gust as high as 20 mph. Chance of precipitation is 60%.
Tonight
A chance of showers and thunderstorms. Increasing clouds, with a low around 49. West southwest wind 6 to 11 mph becoming northwest 12 to 17 mph after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 50%.
Friday
A 10 percent chance of showers before 7am. Cloudy, then gradually becoming mostly sunny, with a high near 58. Northwest wind 16 to 18 mph, with gusts as high as 29 mph.
Friday Night
Mostly cloudy, with a low around 40. North wind 10 to 15 mph, with gusts as high as 22 mph.
Saturday
Sunny, with a high near 60. North northeast wind 7 to 9 mph.
Saturday Night
Areas of frost after 5am. Otherwise, clear, with a low around 36. Calm wind.
Sunday
Areas of frost before 8am. Otherwise, sunny, with a high near 66. Calm wind becoming south southeast around 5 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 40. Calm wind.
Monday
Sunny, with a high near 71. Calm wind becoming south around 5 mph.
Monday Night
Partly cloudy, with a low around 44. Calm wind.
Tuesday
Sunny, with a high near 75. Light and variable wind.
Tuesday Night
Mostly clear, with a low around 46. Calm wind.
Wednesday
Sunny, with a high near 78. Light and variable wind.
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Carterville IL
37.76°N 89.09°W
37.76°N 89.09°W
12:41 pm CDT Oct 15, 2026
12pm CDT Oct 15, 2026-6pm CDT Oct 21, 2026
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