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

36°F

2°C

Humidity 27%
Wind Speed S 17 mph
Barometer 30.27 in
Dewpoint 5°F (-15°C)
Visibility 10.00 mi
Wind Chill26°F (-3°C)
Last update 20 Jan 3:50 pm CST
Extended Forecast for

5 Miles E Carlinville IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 27. South wind around 15 mph, with gusts as high as 25 mph.

    Low: 27 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy through mid morning, then gradual clearing, with a high near 39. West wind 10 to 15 mph, with gusts as high as 23 mph.

    High: 39 °F

    Becoming
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 20. Southwest wind 7 to 14 mph becoming northwest after midnight. Winds could gust as high as 26 mph.

    Low: 20 °F

    Mostly Clear

  • Thursday

    Thursday: Partly sunny, with a high near 33. Northwest wind 3 to 6 mph.

    High: 33 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 5. Light north wind increasing to 10 to 15 mph in the evening. Winds could gust as high as 22 mph.

    Low: 5 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy and cold, with a high near 10.

    High: 10 °F

    Cold

  • Friday Night

    Friday Night: Mostly cloudy, with a low around -1.

    Low: -1 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 30 percent chance of snow, mainly after noon. Cloudy and cold, with a high near 12.

    High: 12 °F

    Chance Snow

  • Saturday Night

    Saturday Night: A 30 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 5.

    Low: 5 °F

    Chance Snow

Detailed Forecast

Tonight
Mostly cloudy, with a low around 27. South wind around 15 mph, with gusts as high as 25 mph.
Wednesday
Mostly cloudy through mid morning, then gradual clearing, with a high near 39. West wind 10 to 15 mph, with gusts as high as 23 mph.
Wednesday Night
Mostly clear, with a low around 20. Southwest wind 7 to 14 mph becoming northwest after midnight. Winds could gust as high as 26 mph.
Thursday
Partly sunny, with a high near 33. Northwest wind 3 to 6 mph.
Thursday Night
Mostly cloudy, with a low around 5. Light north wind increasing to 10 to 15 mph in the evening. Winds could gust as high as 22 mph.
Friday
Mostly cloudy and cold, with a high near 10.
Friday Night
Mostly cloudy, with a low around -1.
Saturday
A 30 percent chance of snow, mainly after noon. Cloudy and cold, with a high near 12.
Saturday Night
A 30 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 5.
Sunday
Partly sunny and cold, with a high near 19.
Sunday Night
Partly cloudy, with a low around 3.
Monday
Mostly sunny, with a high near 22.
Monday Night
Partly cloudy, with a low around 8.
Tuesday
Mostly sunny, with a high near 32.
Basemap Options
Click map to change the forecast location
Loading map...
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:
4:26 pm CST Jan 20, 2026
Forecast Valid:
4pm CST Jan 20, 2026-6pm CST Jan 27, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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