National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Overcast

43°F

6°C

Humidity 69%
Wind Speed NA
Barometer 29.95 in
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Last update 9 Nov 1:15 am CST
Extended Forecast for

Glen Carbon IL

  • Overnight

    Overnight: Cloudy, with a low around 35. Breezy, with a northwest wind 18 to 20 mph, with gusts as high as 32 mph.

    Low: 35 °F

    Cloudy and
    Breezy

  • Sunday

    Sunday: A chance of flurries. Cloudy through mid morning, then gradual clearing, with a temperature falling to around 33 by 5pm. Breezy, with a northwest wind 18 to 22 mph, with gusts as high as 31 mph.

    High: 38 °F⇓

    Chance
    Flurries and
    Breezy

  • Sunday Night

    Sunday Night: A chance of flurries between 10pm and 1am. Partly cloudy, with a low around 24. Northwest wind 13 to 16 mph, with gusts as high as 24 mph.

    Low: 24 °F

    Chance
    Flurries

  • Monday

    Monday: Sunny, with a high near 39. Northwest wind 9 to 17 mph, with gusts as high as 24 mph.

    High: 39 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 26. West wind 5 to 7 mph becoming south after midnight.

    Low: 26 °F

    Mostly Clear

  • Veterans Day

    Veterans Day: Partly sunny, with a high near 53.

    High: 53 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 41.

    Low: 41 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 62.

    High: 62 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 35.

    Low: 35 °F

    Mostly Clear

Detailed Forecast

Overnight
Cloudy, with a low around 35. Breezy, with a northwest wind 18 to 20 mph, with gusts as high as 32 mph.
Sunday
A chance of flurries. Cloudy through mid morning, then gradual clearing, with a temperature falling to around 33 by 5pm. Breezy, with a northwest wind 18 to 22 mph, with gusts as high as 31 mph.
Sunday Night
A chance of flurries between 10pm and 1am. Partly cloudy, with a low around 24. Northwest wind 13 to 16 mph, with gusts as high as 24 mph.
Monday
Sunny, with a high near 39. Northwest wind 9 to 17 mph, with gusts as high as 24 mph.
Monday Night
Mostly clear, with a low around 26. West wind 5 to 7 mph becoming south after midnight.
Veterans Day
Partly sunny, with a high near 53.
Tuesday Night
Mostly clear, with a low around 41.
Wednesday
Sunny, with a high near 62.
Wednesday Night
Mostly clear, with a low around 35.
Thursday
Mostly sunny, with a high near 61.
Thursday Night
Partly cloudy, with a low around 45.
Friday
Sunny, with a high near 70.
Friday Night
Partly cloudy, with a low around 53.
Saturday
Mostly sunny, with a high near 73.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Glen Carbon IL
 38.74°N 89.94°W (Elev. 568 ft)
Last Update:
1:01 am CST Nov 9, 2025
Forecast Valid:
1am CST Nov 9, 2025-6pm CST Nov 15, 2025
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation