Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Fair

57°F

14°C

Humidity 33%
Wind Speed Calm
Barometer 29.64 in
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Last update 18 Feb 6:45 pm CST
Extended Forecast for

4 Miles SSW South Roxana IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 49. Southeast wind 3 to 5 mph.

    Low: 49 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 40 percent chance of showers and thunderstorms, mainly before 1pm.  Partly sunny, with a high near 70. Southeast wind 5 to 10 mph becoming southwest 13 to 18 mph in the afternoon. Winds could gust as high as 26 mph.

    High: 70 °F

    Chance
    Showers then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 38. Southwest wind 10 to 18 mph, with gusts as high as 28 mph.

    Low: 38 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 50. West wind 8 to 18 mph, with gusts as high as 26 mph.

    High: 50 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 30. North wind around 6 mph.

    Low: 30 °F

    Partly Cloudy

  • Saturday

    Saturday: A slight chance of rain and snow after noon.  Mostly sunny, with a high near 45. Chance of precipitation is 20%.

    High: 45 °F

    Mostly Sunny
    then Slight
    Chance
    Rain/Snow

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 25.

    Low: 25 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 39.

    High: 39 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 20.

    Low: 20 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 49. Southeast wind 3 to 5 mph.
Thursday
A 40 percent chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 70. Southeast wind 5 to 10 mph becoming southwest 13 to 18 mph in the afternoon. Winds could gust as high as 26 mph.
Thursday Night
Mostly clear, with a low around 38. Southwest wind 10 to 18 mph, with gusts as high as 28 mph.
Friday
Sunny, with a high near 50. West wind 8 to 18 mph, with gusts as high as 26 mph.
Friday Night
Partly cloudy, with a low around 30. North wind around 6 mph.
Saturday
A slight chance of rain and snow after noon. Mostly sunny, with a high near 45. Chance of precipitation is 20%.
Saturday Night
Mostly clear, with a low around 25.
Sunday
Sunny, with a high near 39.
Sunday Night
Mostly clear, with a low around 20.
Monday
Sunny, with a high near 39.
Monday Night
Mostly clear, with a low around 22.
Tuesday
Mostly sunny, with a high near 49.
Tuesday Night
Mostly cloudy, with a low around 37.
Wednesday
A 20 percent chance of rain. Partly sunny, with a high near 57.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSW South Roxana IL
 38.77°N 90.08°W (Elev. 427 ft)
5:31 pm CST Feb 18, 2026
7pm CST Feb 18, 2026-6pm CST Feb 25, 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