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

47°F

8°C

Humidity 78%
Wind Speed S 10 mph
Barometer 29.88 in
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Wind Chill42°F (6°C)
Last update 9 Mar 5:55 am CDT
Extended Forecast for

6 Miles SW Carlinville IL

  • Today

    Today: Sunny, with a high near 77. South wind 8 to 17 mph, with gusts as high as 26 mph.

    High: 77 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 57. South wind 8 to 10 mph.

    Low: 57 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 50 percent chance of showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 81. South wind 8 to 15 mph, with gusts as high as 23 mph.

    High: 81 °F

    Mostly Sunny
    then Chance
    Showers

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 7pm. Low around 51. South wind around 14 mph, with gusts as high as 24 mph. Chance of precipitation is 100%.

    Low: 51 °F

    Showers
    Likely then
    T-storms

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm. Temperature rising to near 59 by 10am, then falling to around 47 during the remainder of the day. Breezy, with a southwest wind 14 to 21 mph becoming northwest in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 100%.

    High: 59 °F⇓

    Showers and
    Breezy

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 30.

    Low: 30 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 51.

    High: 51 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 41.

    Low: 41 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 60.

    High: 60 °F

    Partly Sunny

Detailed Forecast

Today
Sunny, with a high near 77. South wind 8 to 17 mph, with gusts as high as 26 mph.
Tonight
Mostly clear, with a low around 57. South wind 8 to 10 mph.
Tuesday
A 50 percent chance of showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 81. South wind 8 to 15 mph, with gusts as high as 23 mph.
Tuesday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 7pm. Low around 51. South wind around 14 mph, with gusts as high as 24 mph. Chance of precipitation is 100%.
Wednesday
Showers and possibly a thunderstorm. Temperature rising to near 59 by 10am, then falling to around 47 during the remainder of the day. Breezy, with a southwest wind 14 to 21 mph becoming northwest in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 100%.
Wednesday Night
Partly cloudy, with a low around 30.
Thursday
Mostly sunny, with a high near 51.
Thursday Night
Mostly cloudy, with a low around 41.
Friday
Partly sunny, with a high near 60.
Friday Night
Mostly cloudy, with a low around 35.
Saturday
Partly sunny, with a high near 63.
Saturday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 44.
Sunday
A 50 percent chance of rain and thunderstorms. Mostly cloudy, with a high near 65. Breezy.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
6 Miles SW Carlinville IL
 39.21°N 89.95°W (Elev. 548 ft)
Last Update:
5:11 am CDT Mar 9, 2026
Forecast Valid:
6am CDT Mar 9, 2026-6pm CDT Mar 15, 2026
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation