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

32°F

0°C

Humidity 70%
Wind Speed N 13 G 23 mph
Barometer 30.21 in
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Wind Chill22°F (-6°C)
Last update 28 Feb 11:15 pm CST
Extended Forecast for

5 Miles E Carlinville IL

  • Tonight

    Tonight: Mostly clear, with a low around 27. Northeast wind 13 to 16 mph, with gusts as high as 23 mph.

    Low: 27 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly cloudy, with a high near 45. Northeast wind 11 to 14 mph.

    High: 45 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Rain, snow, and sleet before 3am, then a chance of rain and snow between 3am and 4am, then a chance of rain after 4am. Low around 32. East wind 9 to 11 mph. Chance of precipitation is 80%. New snow and sleet accumulation of less than a half inch possible.

    Low: 32 °F

    Wintry Mix

  • Monday

    Monday: A chance of rain and snow before 9am, then a chance of rain. Cloudy, with a high near 43. Southeast wind 9 to 11 mph. Chance of precipitation is 40%.

    High: 43 °F

    Chance
    Rain/Snow
    then Slight
    Chance Rain

  • Monday Night

    Monday Night: Rain. Low around 37. Southeast wind around 8 mph. Chance of precipitation is 90%.

    Low: 37 °F

    Rain Likely
    then Rain

  • Tuesday

    Tuesday: Rain and possibly a thunderstorm before 9am, then rain between 9am and noon, then rain and possibly a thunderstorm after noon. High near 59. Chance of precipitation is 90%.

    High: 59 °F

    Rain

  • Tuesday Night

    Tuesday Night: Rain and possibly a thunderstorm. Low around 49. Chance of precipitation is 90%.

    Low: 49 °F

    Rain

  • Wednesday

    Wednesday: Rain and possibly a thunderstorm. High near 64. Chance of precipitation is 80%.

    High: 64 °F

    Rain

  • Wednesday Night

    Wednesday Night: Rain likely and possibly a thunderstorm. Mostly cloudy, with a low around 49. Chance of precipitation is 70%.

    Low: 49 °F

    Rain Likely

Detailed Forecast

Tonight
Mostly clear, with a low around 27. Northeast wind 13 to 16 mph, with gusts as high as 23 mph.
Sunday
Mostly cloudy, with a high near 45. Northeast wind 11 to 14 mph.
Sunday Night
Rain, snow, and sleet before 3am, then a chance of rain and snow between 3am and 4am, then a chance of rain after 4am. Low around 32. East wind 9 to 11 mph. Chance of precipitation is 80%. New snow and sleet accumulation of less than a half inch possible.
Monday
A chance of rain and snow before 9am, then a chance of rain. Cloudy, with a high near 43. Southeast wind 9 to 11 mph. Chance of precipitation is 40%.
Monday Night
Rain. Low around 37. Southeast wind around 8 mph. Chance of precipitation is 90%.
Tuesday
Rain and possibly a thunderstorm before 9am, then rain between 9am and noon, then rain and possibly a thunderstorm after noon. High near 59. Chance of precipitation is 90%.
Tuesday Night
Rain and possibly a thunderstorm. Low around 49. Chance of precipitation is 90%.
Wednesday
Rain and possibly a thunderstorm. High near 64. Chance of precipitation is 80%.
Wednesday Night
Rain likely and possibly a thunderstorm. Mostly cloudy, with a low around 49. Chance of precipitation is 70%.
Thursday
Rain likely. Partly sunny, with a high near 67. Chance of precipitation is 60%.
Thursday Night
A 50 percent chance of rain and thunderstorms. Partly cloudy, with a low around 52.
Friday
Rain likely and possibly a thunderstorm. Mostly cloudy, with a high near 69. Chance of precipitation is 70%.
Friday Night
Rain likely and possibly a thunderstorm. Mostly cloudy, with a low around 51. Chance of precipitation is 70%.
Saturday
Rain likely. Mostly cloudy, with a high near 63. Chance of precipitation is 70%.
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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:
10:01 pm CST Feb 28, 2026
Forecast Valid:
11pm CST Feb 28, 2026-6pm CST Mar 7, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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