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.

Mostly Cloudy

41°F

5°C

Humidity 82%
Wind Speed NA
Barometer 30.08 in
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Last update 1 Nov 6:35 am CDT
Extended Forecast for

2 Miles WNW Glen Carbon IL

Freeze Warning November 2, 01:00am until November 2, 07:00am
Click here for hazard details and duration
Freeze Warning

  • Today

    Today: A 20 percent chance of rain after 1pm. Mostly sunny early, then becoming cloudy, with a high near 53. West wind 5 to 9 mph.

    High: 53 °F

    Mostly Sunny
    then Slight
    Chance Rain

  • Tonight

    Tonight: Patchy frost after 2am. Otherwise, partly cloudy, with a low around 33. Northwest wind around 6 mph becoming calm in the evening.

    Low: 33 °F

    Mostly Cloudy
    then Patchy
    Frost

  • Sunday

    Sunday: Areas of frost before 9am. Otherwise, sunny, with a high near 55. Calm wind becoming northwest around 5 mph in the afternoon.

    High: 55 °F

    Areas Frost
    then Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 37. South wind 3 to 6 mph.

    Low: 37 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 64. Southwest wind 6 to 9 mph becoming west in the afternoon.

    High: 64 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 39.

    Low: 39 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 67.

    High: 67 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 50.

    Low: 50 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 70.

    High: 70 °F

    Sunny

Detailed Forecast

Today
A 20 percent chance of rain after 1pm. Mostly sunny early, then becoming cloudy, with a high near 53. West wind 5 to 9 mph.
Tonight
Patchy frost after 2am. Otherwise, partly cloudy, with a low around 33. Northwest wind around 6 mph becoming calm in the evening.
Sunday
Areas of frost before 9am. Otherwise, sunny, with a high near 55. Calm wind becoming northwest around 5 mph in the afternoon.
Sunday Night
Clear, with a low around 37. South wind 3 to 6 mph.
Monday
Sunny, with a high near 64. Southwest wind 6 to 9 mph becoming west in the afternoon.
Monday Night
Mostly clear, with a low around 39.
Tuesday
Mostly sunny, with a high near 67.
Tuesday Night
Mostly clear, with a low around 50.
Wednesday
Sunny, with a high near 70.
Wednesday Night
Clear, with a low around 42.
Thursday
Sunny, with a high near 66.
Thursday Night
A 20 percent chance of rain. Partly cloudy, with a low around 51.
Friday
A 30 percent chance of rain. Partly sunny, with a high near 65.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WNW Glen Carbon IL
 38.77°N 90°W (Elev. 551 ft)
Last Update:
6:01 am CDT Nov 1, 2025
Forecast Valid:
9am CDT Nov 1, 2025-6pm CST Nov 7, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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