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

16°F

-9°C

Humidity 73%
Wind Speed N 8 mph
Barometer 30.44 in
Dewpoint 9°F (-13°C)
Visibility 10.00 mi
Wind Chill5°F (-15°C)
Last update 4 Dec 8:45 am CST
Extended Forecast for

3 Miles SSE Carlinville IL

  • Today

    Today: Mostly sunny and cold, with a high near 19. North wind 5 to 8 mph.

    High: 19 °F

    Cold

  • Tonight

    Tonight: Partly cloudy, with a low around 2. Light and variable wind becoming south around 6 mph after midnight.

    Low: 2 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 33. South wind 3 to 7 mph.

    High: 33 °F

    Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 22. South wind around 6 mph becoming light and variable after midnight.

    Low: 22 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 33. Light and variable wind.

    High: 33 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: A chance of snow between midnight and 3am, then a chance of freezing rain after 3am. Cloudy, with a low around 22. Chance of precipitation is 30%.

    Low: 22 °F

    Cloudy then
    Chance Wintry
    Mix

  • Sunday

    Sunday: A 20 percent chance of snow before noon. Mostly cloudy, with a high near 29.

    High: 29 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 13.

    Low: 13 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 28.

    High: 28 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny and cold, with a high near 19. North wind 5 to 8 mph.
Tonight
Partly cloudy, with a low around 2. Light and variable wind becoming south around 6 mph after midnight.
Friday
Sunny, with a high near 33. South wind 3 to 7 mph.
Friday Night
Mostly cloudy, with a low around 22. South wind around 6 mph becoming light and variable after midnight.
Saturday
Mostly cloudy, with a high near 33. Light and variable wind.
Saturday Night
A chance of snow between midnight and 3am, then a chance of freezing rain after 3am. Cloudy, with a low around 22. Chance of precipitation is 30%.
Sunday
A 20 percent chance of snow before noon. Mostly cloudy, with a high near 29.
Sunday Night
Mostly cloudy, with a low around 13.
Monday
Mostly sunny, with a high near 28.
Monday Night
Mostly cloudy, with a low around 18.
Tuesday
Partly sunny, with a high near 39.
Tuesday Night
Mostly cloudy, with a low around 28.
Wednesday
A 30 percent chance of rain. Mostly cloudy, with a high near 40.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSE Carlinville IL
 39.25°N 89.86°W (Elev. 551 ft)
Last Update:
7:31 am CST Dec 4, 2025
Forecast Valid:
9am CST Dec 4, 2025-6pm CST Dec 10, 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