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

41°F

5°C

Humidity 64%
Wind Speed N 6 mph
Barometer 30.24 in
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Wind Chill37°F (3°C)
Last update 23 Mar 2:55 am CDT
Extended Forecast for

5 Miles E Carlinville IL

  • Overnight

    Overnight: Mostly clear, with a low around 32. North wind around 14 mph, with gusts as high as 25 mph.

    Low: 32 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 52. North wind 10 to 13 mph, with gusts as high as 20 mph.

    High: 52 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A chance of sprinkles after 3am. Mostly cloudy, with a low around 33. East wind 6 to 8 mph.

    Low: 33 °F

    Chance
    Sprinkles

  • Tuesday

    Tuesday: Mostly sunny, with a high near 59. Southeast wind 7 to 10 mph.

    High: 59 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 39. Southeast wind around 6 mph.

    Low: 39 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 72.

    High: 72 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 56.

    Low: 56 °F

    Partly Cloudy

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 86.

    High: 86 °F

    Sunny then
    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 39. Chance of precipitation is 70%.

    Low: 39 °F

    Showers
    Likely

Detailed Forecast

Overnight
Mostly clear, with a low around 32. North wind around 14 mph, with gusts as high as 25 mph.
Monday
Mostly sunny, with a high near 52. North wind 10 to 13 mph, with gusts as high as 20 mph.
Monday Night
A chance of sprinkles after 3am. Mostly cloudy, with a low around 33. East wind 6 to 8 mph.
Tuesday
Mostly sunny, with a high near 59. Southeast wind 7 to 10 mph.
Tuesday Night
Partly cloudy, with a low around 39. Southeast wind around 6 mph.
Wednesday
Mostly sunny, with a high near 72.
Wednesday Night
Partly cloudy, with a low around 56.
Thursday
A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 86.
Thursday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 39. Chance of precipitation is 70%.
Friday
A chance of rain showers, mixing with snow after 10am, then gradually ending. Mostly cloudy, with a high near 49. Chance of precipitation is 30%.
Friday Night
Partly cloudy, with a low around 28.
Saturday
Sunny, with a high near 55.
Saturday Night
Mostly clear, with a low around 35.
Sunday
Partly sunny, with a high near 61.
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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:
2:51 am CDT Mar 23, 2026
Forecast Valid:
3am CDT Mar 23, 2026-6pm CDT Mar 29, 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