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

32°F

0°C

Humidity 37%
Wind Speed S 14 mph
Barometer 29.83 in
Dewpoint 9°F (-13°C)
Visibility 10.00 mi
Wind Chill22°F (-6°C)
Last update 15 Jan 9:45 pm CST
Extended Forecast for

5 Miles E Carlinville IL

  • Tonight

    Tonight: Snow, mainly before midnight. Low around 24. South wind 11 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. Total nighttime snow accumulation of less than a half inch possible.

    Low: 24 °F

    Snow then
    Chance Snow

  • Friday

    Friday: A 30 percent chance of snow, mainly after 5pm. Mostly cloudy, with a high near 41. Breezy, with a west wind 11 to 20 mph, with gusts as high as 28 mph.

    High: 41 °F

    Mostly Cloudy
    then Chance
    Snow and
    Breezy

  • Friday Night

    Friday Night: A 50 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 18. West wind 13 to 16 mph, with gusts as high as 24 mph.

    Low: 18 °F

    Chance Snow
    then Slight
    Chance Snow

  • Saturday

    Saturday: Mostly cloudy, with a high near 23. West wind 13 to 17 mph.

    High: 23 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 9. Northwest wind 7 to 11 mph.

    Low: 9 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 26.

    High: 26 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 9.

    Low: 9 °F

    Partly Cloudy

  • M.L.King Day

    M.L.King Day: Sunny and cold, with a high near 18.

    High: 18 °F

    Cold

  • Monday Night

    Monday Night: Mostly clear, with a low around 6.

    Low: 6 °F

    Mostly Clear

Detailed Forecast

Tonight
Snow, mainly before midnight. Low around 24. South wind 11 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. Total nighttime snow accumulation of less than a half inch possible.
Friday
A 30 percent chance of snow, mainly after 5pm. Mostly cloudy, with a high near 41. Breezy, with a west wind 11 to 20 mph, with gusts as high as 28 mph.
Friday Night
A 50 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 18. West wind 13 to 16 mph, with gusts as high as 24 mph.
Saturday
Mostly cloudy, with a high near 23. West wind 13 to 17 mph.
Saturday Night
Mostly clear, with a low around 9. Northwest wind 7 to 11 mph.
Sunday
Mostly sunny, with a high near 26.
Sunday Night
Partly cloudy, with a low around 9.
M.L.King Day
Sunny and cold, with a high near 18.
Monday Night
Mostly clear, with a low around 6.
Tuesday
Sunny, with a high near 30.
Tuesday Night
Partly cloudy, with a low around 20.
Wednesday
Mostly sunny, with a high near 39.
Wednesday Night
Partly cloudy, with a low around 18.
Thursday
Partly sunny, with a high near 37.
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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:
9:41 pm CST Jan 15, 2026
Forecast Valid:
10pm CST Jan 15, 2026-6pm CST Jan 22, 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