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

84°F

29°C

Humidity 25%
Wind Speed NW 9 mph
Barometer 29.83 in
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 20 Mar 5:50 pm CDT
Extended Forecast for

5 Miles E Carlinville IL

  • Tonight

    Tonight: Partly cloudy, with a low around 48. West wind 5 to 11 mph becoming east after midnight.

    Low: 48 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 84. East wind 6 to 10 mph becoming southwest in the afternoon.

    High: 84 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 60. South wind 7 to 10 mph.

    Low: 60 °F

    Clear

  • Sunday

    Sunday: Increasing clouds, with a high near 82. South wind 10 to 16 mph becoming northwest in the afternoon. Winds could gust as high as 23 mph.

    High: 82 °F

    Increasing
    Clouds

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 36. Breezy, with a north wind 14 to 20 mph, with gusts as high as 29 mph.

    Low: 36 °F

    Mostly Cloudy
    and Breezy
    then Mostly
    Clear

  • Monday

    Monday: Sunny, with a high near 54.

    High: 54 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 37.

    Low: 37 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 59.

    High: 59 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: A 20 percent chance of rain and thunderstorms after 1am. Mostly cloudy, with a low around 40.

    Low: 40 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

Detailed Forecast

Tonight
Partly cloudy, with a low around 48. West wind 5 to 11 mph becoming east after midnight.
Saturday
Sunny, with a high near 84. East wind 6 to 10 mph becoming southwest in the afternoon.
Saturday Night
Clear, with a low around 60. South wind 7 to 10 mph.
Sunday
Increasing clouds, with a high near 82. South wind 10 to 16 mph becoming northwest in the afternoon. Winds could gust as high as 23 mph.
Sunday Night
Partly cloudy, with a low around 36. Breezy, with a north wind 14 to 20 mph, with gusts as high as 29 mph.
Monday
Sunny, with a high near 54.
Monday Night
Partly cloudy, with a low around 37.
Tuesday
Mostly cloudy, with a high near 59.
Tuesday Night
A 20 percent chance of rain and thunderstorms after 1am. Mostly cloudy, with a low around 40.
Wednesday
Mostly cloudy, with a high near 63.
Wednesday Night
Mostly cloudy, with a low around 49.
Thursday
A 20 percent chance of rain. Mostly sunny, with a high near 76.
Thursday Night
A 40 percent chance of rain. Partly cloudy, with a low around 37.
Friday
A 20 percent chance of rain. Partly sunny, with a high near 50.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles E Carlinville IL
 39.27°N 89.8°W (Elev. 650 ft)
Last Update:
6:06 pm CDT Mar 20, 2026
Forecast Valid:
6pm CDT Mar 20, 2026-6pm CDT Mar 27, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation