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

35°F

2°C

Humidity 70%
Wind Speed Calm
Barometer 29.71 in
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Last update 25 Feb 5:15 am CST
Extended Forecast for

4 Miles SSW South Roxana IL

  • Today

    Today: Mostly cloudy, with a high near 52. Calm wind becoming north around 5 mph.

    High: 52 °F

    Mostly Cloudy

  • Tonight

    Tonight: A 50 percent chance of rain, mainly after 9pm. Mostly cloudy, with a low around 34. Northeast wind 3 to 6 mph.

    Low: 34 °F

    Chance Rain

  • Thursday

    Thursday: Partly sunny, then gradually becoming sunny, with a high near 53. West wind 5 to 8 mph becoming calm in the afternoon.

    High: 53 °F

    Becoming
    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 34. Light south wind.

    Low: 34 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 68. Light south wind becoming southwest 6 to 11 mph in the morning.

    High: 68 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 41.

    Low: 41 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 62.

    High: 62 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of rain. Partly cloudy, with a low around 32.

    Low: 32 °F

    Slight Chance
    Rain

  • Sunday

    Sunday: A chance of rain before noon, then a chance of rain and snow. Mostly cloudy, with a high near 45. Chance of precipitation is 40%.

    High: 45 °F

    Chance Rain
    then Chance
    Rain/Snow

Detailed Forecast

Today
Mostly cloudy, with a high near 52. Calm wind becoming north around 5 mph.
Tonight
A 50 percent chance of rain, mainly after 9pm. Mostly cloudy, with a low around 34. Northeast wind 3 to 6 mph.
Thursday
Partly sunny, then gradually becoming sunny, with a high near 53. West wind 5 to 8 mph becoming calm in the afternoon.
Thursday Night
Mostly clear, with a low around 34. Light south wind.
Friday
Sunny, with a high near 68. Light south wind becoming southwest 6 to 11 mph in the morning.
Friday Night
Mostly clear, with a low around 41.
Saturday
Mostly sunny, with a high near 62.
Saturday Night
A 20 percent chance of rain. Partly cloudy, with a low around 32.
Sunday
A chance of rain before noon, then a chance of rain and snow. Mostly cloudy, with a high near 45. Chance of precipitation is 40%.
Sunday Night
Rain and snow likely, mainly before midnight. Mostly cloudy, with a low around 31. Chance of precipitation is 60%.
Monday
A 30 percent chance of rain. Mostly cloudy, with a high near 42.
Monday Night
A 40 percent chance of rain and thunderstorms. Mostly cloudy, with a low around 30.
Tuesday
A 50 percent chance of rain. Mostly cloudy, with a high near 47.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSW South Roxana IL
 38.77°N 90.08°W (Elev. 427 ft)
Last Update:
5:26 am CST Feb 25, 2026
Forecast Valid:
5am CST Feb 25, 2026-6pm CST Mar 3, 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