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.

Mostly Cloudy

19°F

-7°C

Humidity 58%
Wind Speed N 14 mph
Barometer 30.59 in
Dewpoint 7°F (-14°C)
Visibility 10.00 mi
Wind Chill5°F (-15°C)
Last update 23 Feb 8:50 am CST
Extended Forecast for

South Roxana IL

  • Today

    Today: Mostly cloudy through mid morning, then gradual clearing, with a high near 30. Northwest wind 6 to 13 mph, with gusts as high as 21 mph.

    High: 30 °F

    Becoming
    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 20. Calm wind becoming south 5 to 9 mph after midnight.

    Low: 20 °F

    Mostly Clear

  • Tuesday

    Tuesday: Partly sunny, with a high near 52. Breezy, with a south wind 13 to 21 mph, with gusts as high as 30 mph.

    High: 52 °F

    Partly Sunny
    and Breezy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 32. Southwest wind 5 to 14 mph becoming northwest after midnight.

    Low: 32 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 52. Northwest wind around 6 mph becoming southeast in the afternoon.

    High: 52 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A slight chance of rain, then rain likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 36. Chance of precipitation is 60%.

    Low: 36 °F

    Slight Chance
    Rain then
    Rain Likely

  • Thursday

    Thursday: A 40 percent chance of rain before noon. Partly sunny, with a high near 48.

    High: 48 °F

    Chance Rain
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 29.

    Low: 29 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 61.

    High: 61 °F

    Sunny

Detailed Forecast

Today
Mostly cloudy through mid morning, then gradual clearing, with a high near 30. Northwest wind 6 to 13 mph, with gusts as high as 21 mph.
Tonight
Mostly clear, with a low around 20. Calm wind becoming south 5 to 9 mph after midnight.
Tuesday
Partly sunny, with a high near 52. Breezy, with a south wind 13 to 21 mph, with gusts as high as 30 mph.
Tuesday Night
Mostly cloudy, with a low around 32. Southwest wind 5 to 14 mph becoming northwest after midnight.
Wednesday
Mostly sunny, with a high near 52. Northwest wind around 6 mph becoming southeast in the afternoon.
Wednesday Night
A slight chance of rain, then rain likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 36. Chance of precipitation is 60%.
Thursday
A 40 percent chance of rain before noon. Partly sunny, with a high near 48.
Thursday Night
Mostly clear, with a low around 29.
Friday
Sunny, with a high near 61.
Friday Night
Clear, with a low around 39.
Saturday
Mostly sunny, with a high near 64.
Saturday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 34.
Sunday
A chance of rain and snow. Partly sunny, with a high near 50. Chance of precipitation is 30%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
South Roxana IL
 38.81°N 90.05°W (Elev. 430 ft)
Last Update:
8:47 am CST Feb 23, 2026
Forecast Valid:
8am CST Feb 23, 2026-6pm CST Mar 1, 2026
 
Forecast Discussion
 
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Additional Resources

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National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation