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

82°F

28°C

Humidity 37%
Wind Speed Vrbl 3 mph
Barometer 30.21 in
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 14 Oct 3:50 pm CDT
Extended Forecast for

5 Miles SSW Carlinville IL

  • Tonight

    Tonight: Partly cloudy, with a low around 56. East wind 3 to 6 mph.

    Low: 56 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 81. Calm wind becoming northeast around 5 mph in the afternoon.

    High: 81 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 56. East wind 3 to 5 mph.

    Low: 56 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 80. Southeast wind 6 to 9 mph.

    High: 80 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 55. Southeast wind around 8 mph.

    Low: 55 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 81.

    High: 81 °F

    Partly Sunny

  • Friday Night

    Friday Night: A 30 percent chance of showers after 1am. Partly cloudy, with a low around 60.

    Low: 60 °F

    Partly Cloudy
    then Chance
    Showers

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm. Partly sunny, with a high near 75. Chance of precipitation is 70%.

    High: 75 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 48. Chance of precipitation is 50%.

    Low: 48 °F

    Chance
    Showers

Detailed Forecast

Tonight
Partly cloudy, with a low around 56. East wind 3 to 6 mph.
Wednesday
Mostly sunny, with a high near 81. Calm wind becoming northeast around 5 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 56. East wind 3 to 5 mph.
Thursday
Sunny, with a high near 80. Southeast wind 6 to 9 mph.
Thursday Night
Partly cloudy, with a low around 55. Southeast wind around 8 mph.
Friday
Partly sunny, with a high near 81.
Friday Night
A 30 percent chance of showers after 1am. Partly cloudy, with a low around 60.
Saturday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 75. Chance of precipitation is 70%.
Saturday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 48. Chance of precipitation is 50%.
Sunday
A 20 percent chance of showers. Sunny, with a high near 66.
Sunday Night
Clear, with a low around 43.
Monday
Sunny, with a high near 72.
Monday Night
Mostly clear, with a low around 48.
Tuesday
A 20 percent chance of showers. Sunny, with a high near 73.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SSW Carlinville IL
 39.21°N 89.89°W (Elev. 610 ft)
Last Update:
4:16 pm CDT Oct 14, 2025
Forecast Valid:
4pm CDT Oct 14, 2025-6pm CDT Oct 21, 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