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.

Overcast

57°F

14°C

Humidity 72%
Wind Speed W 9 mph
Barometer 29.85 in
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 4 Nov 5:50 pm CST
Extended Forecast for

Carlinville IL

  • Tonight

    Tonight: Cloudy during the early evening, then gradual clearing, with a low around 44. Southwest wind 5 to 8 mph, with gusts as high as 20 mph.

    Low: 44 °F

    Gradual
    Clearing

  • Thursday

    Thursday: Increasing clouds, with a high near 60. West wind 6 to 11 mph.

    High: 60 °F

    Increasing
    Clouds

  • Thursday Night

    Thursday Night: A slight chance of rain between 9pm and 10pm. Mostly cloudy, with a low around 40. Northwest wind 3 to 6 mph. Chance of precipitation is 20%.

    Low: 40 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Friday

    Friday: Cloudy, then gradually becoming mostly sunny, with a high near 53. North wind 6 to 10 mph.

    High: 53 °F

    Decreasing
    Clouds

  • Friday Night

    Friday Night: Partly cloudy, with a low around 28. North wind around 5 mph becoming calm in the evening.

    Low: 28 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 53.

    High: 53 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 28.

    Low: 28 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 58.

    High: 58 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 31.

    Low: 31 °F

    Clear

Detailed Forecast

Tonight
Cloudy during the early evening, then gradual clearing, with a low around 44. Southwest wind 5 to 8 mph, with gusts as high as 20 mph.
Thursday
Increasing clouds, with a high near 60. West wind 6 to 11 mph.
Thursday Night
A slight chance of rain between 9pm and 10pm. Mostly cloudy, with a low around 40. Northwest wind 3 to 6 mph. Chance of precipitation is 20%.
Friday
Cloudy, then gradually becoming mostly sunny, with a high near 53. North wind 6 to 10 mph.
Friday Night
Partly cloudy, with a low around 28. North wind around 5 mph becoming calm in the evening.
Saturday
Sunny, with a high near 53.
Saturday Night
Mostly clear, with a low around 28.
Sunday
Sunny, with a high near 58.
Sunday Night
Clear, with a low around 31.
Monday
Sunny, with a high near 64.
Monday Night
Clear, with a low around 35.
Tuesday
Sunny, with a high near 64.
Tuesday Night
Mostly clear, with a low around 36.
Veterans Day
Mostly sunny, with a high near 65.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Carlinville IL
 39.27°N 89.89°W (Elev. 614 ft)
Last Update:
6:21 pm CST Nov 4, 2026
Forecast Valid:
6pm CST Nov 4, 2026-6pm CST Nov 11, 2026
 
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