Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Fair

66°F

19°C

Humidity 78%
Wind Speed S 14 mph
Barometer 29.81 in
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 9 Mar 9:50 pm CDT
Extended Forecast for

2 Miles ENE Glen Carbon IL

  • Tonight

    Tonight: Partly cloudy, with a low around 61. South wind 9 to 13 mph, with gusts as high as 22 mph.

    Low: 61 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 79. South wind 8 to 17 mph, with gusts as high as 25 mph.

    High: 79 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A chance of rain and thunderstorms, then rain likely and possibly a thunderstorm after 3am.  Mostly cloudy, with a low around 55. South wind 13 to 16 mph, with gusts as high as 30 mph.  Chance of precipitation is 70%.

    Low: 55 °F

    Slight Chance
    T-storms then
    Rain Likely

  • Wednesday

    Wednesday: Rain likely and possibly a thunderstorm before 7am, then showers and possibly a thunderstorm between 7am and 1pm, then showers likely after 1pm.  Temperature rising to near 64 by 10am, then falling to around 49 during the remainder of the day. Breezy, with a southwest wind 14 to 21 mph becoming northwest in the afternoon. Winds could gust as high as 29 mph.  Chance of precipitation is 90%.

    High: 64 °F

    Showers and
    Breezy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 33. Northwest wind 8 to 18 mph, with gusts as high as 25 mph.

    Low: 33 °F

    Mostly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 53.

    High: 53 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 44.

    Low: 44 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 62.

    High: 62 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 40.

    Low: 40 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 61. South wind 9 to 13 mph, with gusts as high as 22 mph.
Tuesday
Partly sunny, with a high near 79. South wind 8 to 17 mph, with gusts as high as 25 mph.
Tuesday Night
A chance of rain and thunderstorms, then rain likely and possibly a thunderstorm after 3am. Mostly cloudy, with a low around 55. South wind 13 to 16 mph, with gusts as high as 30 mph. Chance of precipitation is 70%.
Wednesday
Rain likely and possibly a thunderstorm before 7am, then showers and possibly a thunderstorm between 7am and 1pm, then showers likely after 1pm. Temperature rising to near 64 by 10am, then falling to around 49 during the remainder of the day. Breezy, with a southwest wind 14 to 21 mph becoming northwest in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 90%.
Wednesday Night
Mostly cloudy, with a low around 33. Northwest wind 8 to 18 mph, with gusts as high as 25 mph.
Thursday
Sunny, with a high near 53.
Thursday Night
Mostly cloudy, with a low around 44.
Friday
Mostly cloudy, with a high near 62.
Friday Night
Mostly cloudy, with a low around 40.
Saturday
Mostly sunny, with a high near 68.
Saturday Night
A 20 percent chance of rain. Partly cloudy, with a low around 52.
Sunday
A 50 percent chance of rain. Mostly cloudy, with a high near 64. Breezy.
Sunday Night
A chance of rain and snow. Partly cloudy, with a low around 28. Blustery. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 40.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ENE Glen Carbon IL
 38.77°N 89.94°W (Elev. 564 ft)
7:21 pm CDT Mar 9, 2026
10pm CDT Mar 9, 2026-6pm CDT Mar 16, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database