Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Fair

73°F

23°C

Humidity 36%
Wind Speed S 5 mph
Barometer 29.98 in
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 6 Oct 5:50 pm CDT
Extended Forecast for

2 Miles WNW Glen Carbon IL

  • Tonight

    Tonight: Clear, with a low around 54. South wind 3 to 5 mph.

    Low: 54 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 88. Light and variable wind becoming west 5 to 9 mph in the morning.

    High: 88 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 56. West wind around 5 mph becoming calm  in the evening.

    Low: 56 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 83. Calm wind becoming north around 6 mph in the morning.

    High: 83 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 54. Northeast wind 3 to 5 mph.

    Low: 54 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 58.

    Low: 58 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 90.

    High: 90 °F

    Sunny

  • Saturday Night

    Saturday Night: A 30 percent chance of showers after 1am.  Partly cloudy, with a low around 60.

    Low: 60 °F

    Partly Cloudy
    then Chance
    Showers

Detailed Forecast

Tonight
Clear, with a low around 54. South wind 3 to 5 mph.
Wednesday
Sunny, with a high near 88. Light and variable wind becoming west 5 to 9 mph in the morning.
Wednesday Night
Mostly clear, with a low around 56. West wind around 5 mph becoming calm in the evening.
Thursday
Sunny, with a high near 83. Calm wind becoming north around 6 mph in the morning.
Thursday Night
Mostly clear, with a low around 54. Northeast wind 3 to 5 mph.
Friday
Sunny, with a high near 86.
Friday Night
Clear, with a low around 58.
Saturday
Sunny, with a high near 90.
Saturday Night
A 30 percent chance of showers after 1am. Partly cloudy, with a low around 60.
Sunday
A 30 percent chance of showers before 1pm. Mostly sunny, with a high near 80.
Sunday Night
Partly cloudy, with a low around 59.
Columbus Day
Mostly sunny, with a high near 85.
Monday Night
Mostly clear, with a low around 60.
Tuesday
A 30 percent chance of showers. Sunny, with a high near 83.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WNW Glen Carbon IL
 38.77°N 90°W (Elev. 551 ft)
2:51 pm CDT Oct 6, 2026
6pm CDT Oct 6, 2026-6pm CDT Oct 13, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database