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

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Fair

55°F

13°C

Humidity 55%
Wind Speed Vrbl 3 mph
Barometer 29.86 in
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Last update 8 Nov 11:50 am CST
Extended Forecast for

Glen Carbon ILSimilar City Names

  • This Afternoon

    This Afternoon: Isolated showers after 4pm. Sunny early, then becoming cloudy, with a high near 64. Light and variable wind becoming south around 6 mph. Chance of precipitation is 20%.

    High: 64 °F

    Isolated
    Showers

  • Tonight

    Tonight: Scattered showers and thunderstorms before 11pm, then scattered rain between 11pm and midnight. Partly cloudy during the early evening, then becoming cloudy, with a low around 36. Breezy, with an east wind 6 to 11 mph becoming northwest 15 to 20 mph in the evening. Winds could gust as high as 30 mph. Chance of precipitation is 30%.

    Low: 36 °F

    Scattered
    Showers then
    Mostly Cloudy
    and Breezy

  • Sunday

    Sunday: Scattered sprinkles and flurries before 7am, then scattered flurries. Mostly cloudy, then gradually becoming sunny, with a high near 38. Breezy, with a northwest wind 16 to 21 mph, with gusts as high as 31 mph.

    High: 38 °F

    Breezy.
    Scattered
    Sprinkles/Flurries
    then
    Scattered
    Flurries

  • Sunday Night

    Sunday Night: A chance of flurries before midnight. Partly cloudy, with a low around 26. Northwest wind 11 to 15 mph, with gusts as high as 22 mph.

    Low: 26 °F

    Chance
    Flurries

  • Monday

    Monday: Sunny, with a high near 40. Northwest wind 9 to 15 mph, with gusts as high as 23 mph.

    High: 40 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 26.

    Low: 26 °F

    Partly Cloudy

  • Veterans Day

    Veterans Day: Partly sunny, with a high near 55.

    High: 55 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 42.

    Low: 42 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 64.

    High: 64 °F

    Sunny

Detailed Forecast

This Afternoon
Isolated showers after 4pm. Sunny early, then becoming cloudy, with a high near 64. Light and variable wind becoming south around 6 mph. Chance of precipitation is 20%.
Tonight
Scattered showers and thunderstorms before 11pm, then scattered rain between 11pm and midnight. Partly cloudy during the early evening, then becoming cloudy, with a low around 36. Breezy, with an east wind 6 to 11 mph becoming northwest 15 to 20 mph in the evening. Winds could gust as high as 30 mph. Chance of precipitation is 30%.
Sunday
Scattered sprinkles and flurries before 7am, then scattered flurries. Mostly cloudy, then gradually becoming sunny, with a high near 38. Breezy, with a northwest wind 16 to 21 mph, with gusts as high as 31 mph.
Sunday Night
A chance of flurries before midnight. Partly cloudy, with a low around 26. Northwest wind 11 to 15 mph, with gusts as high as 22 mph.
Monday
Sunny, with a high near 40. Northwest wind 9 to 15 mph, with gusts as high as 23 mph.
Monday Night
Partly cloudy, with a low around 26.
Veterans Day
Partly sunny, with a high near 55.
Tuesday Night
Mostly clear, with a low around 42.
Wednesday
Sunny, with a high near 64.
Wednesday Night
Mostly clear, with a low around 37.
Thursday
Sunny, with a high near 62.
Thursday Night
Partly cloudy, with a low around 43.
Friday
Mostly sunny, with a high near 67.
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ABOUT THIS FORECAST

 
Point Forecast:
Glen Carbon ILSimilar City Names
 38.77°N 89.97°W (Elev. 548 ft)
Last Update:
11:31 am CST Nov 8, 2025
Forecast Valid:
12pm CST Nov 8, 2025-6pm CST Nov 14, 2025
 
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