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 29%
Wind Speed S 15 mph
Barometer 30.35 in
Dewpoint 3°F (-16°C)
Visibility 10.00 mi
Wind Chill22°F (-6°C)
Last update 20 Jan 12:45 pm CST
Extended Forecast for

4 Miles SSW South Roxana IL

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 36. South wind 11 to 14 mph, with gusts as high as 21 mph.

    High: 36 °F

    Mostly Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 27. South wind 10 to 13 mph, with gusts as high as 23 mph.

    Low: 27 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Cloudy through mid morning, then gradual clearing, with a high near 45. West wind 9 to 13 mph, with gusts as high as 21 mph.

    High: 45 °F

    Becoming
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 24. Southwest wind 5 to 9 mph becoming northwest after midnight.

    Low: 24 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 37. Northwest wind 5 to 7 mph.

    High: 37 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 11.

    Low: 11 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy and cold, with a high near 18.

    High: 18 °F

    Cold

  • Friday Night

    Friday Night: A 30 percent chance of snow, mainly after midnight. Mostly cloudy, with a low around 3.

    Low: 3 °F

    Chance Snow

  • Saturday

    Saturday: A 40 percent chance of snow. Mostly cloudy and cold, with a high near 15.

    High: 15 °F

    Chance Snow

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 36. South wind 11 to 14 mph, with gusts as high as 21 mph.
Tonight
Increasing clouds, with a low around 27. South wind 10 to 13 mph, with gusts as high as 23 mph.
Wednesday
Cloudy through mid morning, then gradual clearing, with a high near 45. West wind 9 to 13 mph, with gusts as high as 21 mph.
Wednesday Night
Mostly clear, with a low around 24. Southwest wind 5 to 9 mph becoming northwest after midnight.
Thursday
Mostly sunny, with a high near 37. Northwest wind 5 to 7 mph.
Thursday Night
Mostly cloudy, with a low around 11.
Friday
Mostly cloudy and cold, with a high near 18.
Friday Night
A 30 percent chance of snow, mainly after midnight. Mostly cloudy, with a low around 3.
Saturday
A 40 percent chance of snow. Mostly cloudy and cold, with a high near 15.
Saturday Night
A 30 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 6.
Sunday
Mostly sunny, with a high near 24.
Sunday Night
Mostly clear, with a low around 7.
Monday
Sunny, with a high near 28.
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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:
10:51 am CST Jan 20, 2026
Forecast Valid:
1pm CST Jan 20, 2026-6pm CST Jan 26, 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