Current conditions at
St. Louis Regional Airport (KALN)
Lat: 38.89°NLon: 90.03°WElev: 518ft.
Fair
86°F
30°C
| Humidity | 40% |
| Wind Speed | NW 7 mph |
| Barometer | 30.16 in |
| Dewpoint | 59°F (15°C) |
| Visibility | 10.00 mi |
| Heat Index | 85°F (29°C) |
| Last update | 11 Sep 12:50 pm CDT |
Extended Forecast for
Glen Carbon IL
This Afternoon
High: 90 °F
Sunny
Tonight
Low: 62 °F
Mostly Clear
Friday
High: 93 °F
Sunny
Friday Night
Low: 67 °F
Mostly Clear
Saturday
High: 95 °F
Sunny
Saturday Night
Low: 69 °F
Partly Cloudy
Sunday
High: 95 °F
Mostly Sunny
then Slight
Chance
T-stormsSunday Night
Low: 68 °F
Mostly Cloudy
Monday
High: 95 °F
Mostly Sunny
then Slight
Chance
T-storms
Detailed Forecast
This Afternoon
Sunny, with a high near 90. North wind 3 to 5 mph.
Tonight
Mostly clear, with a low around 62. East wind 3 to 5 mph.
Friday
Sunny, with a high near 93. Light and variable wind becoming south 5 to 7 mph in the morning.
Friday Night
Mostly clear, with a low around 67. Southeast wind 6 to 8 mph.
Saturday
Sunny, with a high near 95. Southwest wind around 7 mph.
Saturday Night
Partly cloudy, with a low around 69.
Sunday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 95.
Sunday Night
Mostly cloudy, with a low around 68.
Monday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 95.
Monday Night
Mostly clear, with a low around 67.
Tuesday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 94.
Tuesday Night
Mostly clear, with a low around 66.
Wednesday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 92.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Glen Carbon IL
38.77°N 89.97°W (Elev. 548 ft)
38.77°N 89.97°W (Elev. 548 ft)
12:40 pm CDT Sep 11, 2025
1pm CDT Sep 11, 2025-6pm CDT Sep 17, 2025
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