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.

Fair

61°F

16°C

Humidity 29%
Wind Speed NW 16 G 21 mph
Barometer 30.29 in
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Last update 6 Apr 2:50 pm CDT
Extended Forecast for

2 Miles W Glen Carbon IL

  • Tonight

    Tonight: A 20 percent chance of showers after 4am. Increasing clouds, with a low around 38. North wind 7 to 9 mph.

    Low: 38 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Tuesday

    Tuesday: A 20 percent chance of showers before 9am. Mostly cloudy, then gradually becoming sunny, with a high near 53. Northeast wind around 10 mph.

    High: 53 °F

    Slight Chance
    Showers then
    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 39. East wind around 9 mph.

    Low: 39 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 71. South wind 9 to 16 mph, with gusts as high as 24 mph.

    High: 71 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 53. South wind 10 to 13 mph, with gusts as high as 20 mph.

    Low: 53 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 75.

    High: 75 °F

    Sunny

  • Thursday Night

    Thursday Night: A 30 percent chance of showers, mainly after 1am. Mostly cloudy, with a low around 57.

    Low: 57 °F

    Chance
    Showers

  • Friday

    Friday: A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 75. Chance of precipitation is 40%.

    High: 75 °F

    Chance
    Showers then
    Chance
    T-storms

  • Friday Night

    Friday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 56.

    Low: 56 °F

    Chance
    T-storms

Detailed Forecast

Tonight
A 20 percent chance of showers after 4am. Increasing clouds, with a low around 38. North wind 7 to 9 mph.
Tuesday
A 20 percent chance of showers before 9am. Mostly cloudy, then gradually becoming sunny, with a high near 53. Northeast wind around 10 mph.
Tuesday Night
Partly cloudy, with a low around 39. East wind around 9 mph.
Wednesday
Mostly sunny, with a high near 71. South wind 9 to 16 mph, with gusts as high as 24 mph.
Wednesday Night
Partly cloudy, with a low around 53. South wind 10 to 13 mph, with gusts as high as 20 mph.
Thursday
Sunny, with a high near 75.
Thursday Night
A 30 percent chance of showers, mainly after 1am. Mostly cloudy, with a low around 57.
Friday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 75. Chance of precipitation is 40%.
Friday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 56.
Saturday
A 40 percent chance of showers. Partly sunny, with a high near 79.
Saturday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 62.
Sunday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 81.
Sunday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 65.
Monday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 81. Chance of precipitation is 60%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles W Glen Carbon IL
 38.77°N 90°W (Elev. 551 ft)
Last Update:
1:26 pm CDT Apr 6, 2026
Forecast Valid:
3pm CDT Apr 6, 2026-6pm CDT Apr 13, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation