Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Fair

79°F

26°C

Humidity 32%
Wind Speed Vrbl 3 mph
Barometer 30.13 in
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 8 Oct 11:50 am CDT
Extended Forecast for

3 Miles SSE Carlinville IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 84. Calm wind.

    High: 84 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 52. Light and variable wind.

    Low: 52 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 87. Light southeast wind becoming south 5 to 9 mph in the morning.

    High: 87 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 59. South wind 5 to 7 mph.

    Low: 59 °F

    Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 85. South wind 5 to 9 mph.

    High: 85 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 50 percent chance of showers.  Mostly cloudy, with a low around 57.

    Low: 57 °F

    Chance
    Showers

  • Sunday

    Sunday: A 20 percent chance of showers before 1pm.  Partly sunny, with a high near 78.

    High: 78 °F

    Slight Chance
    Showers

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 56.

    Low: 56 °F

    Mostly Clear

  • Columbus Day

    Columbus Day: Sunny, with a high near 89.

    High: 89 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 84. Calm wind.
Tonight
Clear, with a low around 52. Light and variable wind.
Friday
Sunny, with a high near 87. Light southeast wind becoming south 5 to 9 mph in the morning.
Friday Night
Clear, with a low around 59. South wind 5 to 7 mph.
Saturday
Mostly sunny, with a high near 85. South wind 5 to 9 mph.
Saturday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 57.
Sunday
A 20 percent chance of showers before 1pm. Partly sunny, with a high near 78.
Sunday Night
Mostly clear, with a low around 56.
Columbus Day
Sunny, with a high near 89.
Monday Night
Mostly clear, with a low around 59.
Tuesday
Sunny, with a high near 77.
Tuesday Night
Mostly clear, with a low around 49.
Wednesday
Sunny, with a high near 74.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSE Carlinville IL
 39.25°N 89.86°W (Elev. 551 ft)
10:36 am CDT Oct 8, 2026
12pm CDT Oct 8, 2026-6pm CDT Oct 14, 2026
 
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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