Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

A Few Clouds

82°F

28°C

Humidity 40%
Wind Speed Vrbl 3 mph
Barometer 30.03 in
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 19 Jun 2:50 pm CDT
Extended Forecast for

6 Miles SW Carlinville IL

  • Tonight

    Tonight: Isolated showers after 2am.  Mostly cloudy, with a low around 62. Calm wind.  Chance of precipitation is 20%.

    Low: 62 °F

    Mostly Cloudy
    then Isolated
    Showers

  • Saturday

    Saturday: Mostly sunny, with a high near 83. Calm wind.

    High: 83 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A chance of showers, with thunderstorms also possible after 4am.  Increasing clouds, with a low around 63. Calm wind becoming east around 5 mph after midnight.  Chance of precipitation is 50%.

    Low: 63 °F

    Partly Cloudy
    then Chance
    Showers

  • Sunday

    Sunday: Showers likely and possibly a thunderstorm, then showers and thunderstorms after 7am.  High near 78. Southeast wind 7 to 14 mph becoming south in the afternoon. Winds could gust as high as 23 mph.  Chance of precipitation is 100%.

    High: 78 °F

    T-storms

  • Sunday Night

    Sunday Night: Showers and thunderstorms, mainly before 1am.  Low around 62. Southwest wind around 9 mph becoming northwest after midnight.  Chance of precipitation is 80%.

    Low: 62 °F

    T-storms

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms before 1pm.  Partly sunny, with a high near 75.

    High: 75 °F

    Slight Chance
    T-storms

  • Monday Night

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

    Low: 56 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 77.

    High: 77 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers after 1am.  Partly cloudy, with a low around 58.

    Low: 58 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

Detailed Forecast

Tonight
Isolated showers after 2am. Mostly cloudy, with a low around 62. Calm wind. Chance of precipitation is 20%.
Saturday
Mostly sunny, with a high near 83. Calm wind.
Saturday Night
A chance of showers, with thunderstorms also possible after 4am. Increasing clouds, with a low around 63. Calm wind becoming east around 5 mph after midnight. Chance of precipitation is 50%.
Sunday
Showers likely and possibly a thunderstorm, then showers and thunderstorms after 7am. High near 78. Southeast wind 7 to 14 mph becoming south in the afternoon. Winds could gust as high as 23 mph. Chance of precipitation is 100%.
Sunday Night
Showers and thunderstorms, mainly before 1am. Low around 62. Southwest wind around 9 mph becoming northwest after midnight. Chance of precipitation is 80%.
Monday
A 20 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 75.
Monday Night
Partly cloudy, with a low around 56.
Tuesday
Mostly sunny, with a high near 77.
Tuesday Night
A 20 percent chance of showers after 1am. Partly cloudy, with a low around 58.
Wednesday
Sunny, with a high near 79.
Wednesday Night
Mostly clear, with a low around 58.
Thursday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 79.
Thursday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 58.
Friday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 80.
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles SW Carlinville IL
 39.21°N 89.95°W (Elev. 548 ft)
2:31 pm CDT Jun 19, 2026
3pm CDT Jun 19, 2026-6pm CDT Jun 26, 2026
 
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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