Current conditions at
St. Louis Regional Airport (KALN)
Lat: 38.89°NLon: 90.03°WElev: 518ft.
Fair
75°F
24°C
| Humidity | 61% |
| Wind Speed | SW 6 mph |
| Barometer | 30.20 in |
| Dewpoint | 61°F (16°C) |
| Visibility | 10.00 mi |
| Last update | 4 Oct 9:50 am CDT |
Extended Forecast for
Glen Carbon IL
Today
High: 88 °F
Sunny
Tonight
Low: 59 °F
Clear
Sunday
High: 87 °F
Sunny
Sunday Night
Low: 63 °F
Mostly Clear
Monday
High: 87 °F
Chance
ShowersMonday Night
Low: 65 °F
Slight Chance
Showers then
Chance
T-stormsTuesday
High: 78 °F
Chance
T-stormsTuesday Night
Low: 54 °F
Mostly Cloudy
Wednesday
High: 73 °F
Sunny
Detailed Forecast
Today
Sunny, with a high near 88. South wind 7 to 11 mph.
Tonight
Clear, with a low around 59. Southeast wind around 7 mph.
Sunday
Sunny, with a high near 87. South wind 6 to 14 mph, with gusts as high as 21 mph.
Sunday Night
Mostly clear, with a low around 63. South wind 5 to 9 mph.
Monday
A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 87. South wind 5 to 8 mph. Chance of precipitation is 40%.
Monday Night
A slight chance of showers, then a chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 65. Chance of precipitation is 40%.
Tuesday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 78.
Tuesday Night
Mostly cloudy, with a low around 54.
Wednesday
Sunny, with a high near 73.
Wednesday Night
Mostly clear, with a low around 49.
Thursday
Sunny, with a high near 74.
Thursday Night
Mostly clear, with a low around 50.
Friday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 76.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
Forecast AreaABOUT THIS FORECAST
Point Forecast:
Glen Carbon IL
38.75°N 90°W (Elev. 466 ft)
38.75°N 90°W (Elev. 466 ft)
9:26 am CDT Oct 4, 2025
10am CDT Oct 4, 2025-6pm CDT Oct 10, 2025
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
