Current conditions at
St. Louis Regional Airport (KALN)
Lat: 38.89°NLon: 90.03°WElev: 518ft.
Fair
84°F
29°C
| Humidity | 23% |
| Wind Speed | Vrbl 6 mph |
| Barometer | 30.06 in |
| Dewpoint | 43°F (6°C) |
| Visibility | 10.00 mi |
| Heat Index | 81°F (27°C) |
| Last update | 8 Oct 3:50 pm CDT |
Extended Forecast for
Glen Carbon IL
Tonight
Low: 52 °F
Clear
Friday
High: 88 °F
Sunny
Friday Night
Low: 60 °F
Clear
Saturday
High: 83 °F
Increasing
CloudsSaturday Night
Low: 59 °F
Chance Rain
Sunday
High: 80 °F
Partly Sunny
Sunday Night
Low: 59 °F
Mostly Clear
Columbus Day
High: 91 °F
Sunny
Monday Night
Low: 66 °F
Mostly Clear
Detailed Forecast
Tonight
Clear, with a low around 52. Light southeast wind.
Friday
Sunny, with a high near 88. South wind 5 to 10 mph.
Friday Night
Clear, with a low around 60. Southeast wind 5 to 8 mph.
Saturday
Increasing clouds, with a high near 83. South wind 5 to 10 mph.
Saturday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 59. East wind 7 to 10 mph.
Sunday
Partly sunny, with a high near 80.
Sunday Night
Mostly clear, with a low around 59.
Columbus Day
Sunny, with a high near 91.
Monday Night
Mostly clear, with a low around 66.
Tuesday
Sunny, with a high near 86.
Tuesday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 59.
Wednesday
A 20 percent chance of showers. Mostly sunny, with a high near 81.
Wednesday Night
A 30 percent chance of showers. Partly cloudy, with a low around 61.
Thursday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 83.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Glen Carbon IL
38.77°N 89.94°W (Elev. 564 ft)
38.77°N 89.94°W (Elev. 564 ft)
2:36 pm CDT Oct 8, 2026
4pm CDT Oct 8, 2026-6pm CDT Oct 15, 2026
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