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

42°F

6°C

Humidity 88%
Wind Speed SE 5 mph
Barometer 29.98 in
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Wind Chill39°F (4°C)
Last update 17 Feb 2:15 am CST
Extended Forecast for

4 Miles SSW South Roxana IL

  • Overnight

    Overnight: Partly cloudy, with a low around 42. South wind around 6 mph.

    Low: 42 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 61. South wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 29 mph.

    High: 61 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: A slight chance of rain between midnight and 3am. Cloudy, then gradually becoming partly cloudy, with a low around 54. Breezy, with a south wind 14 to 21 mph, with gusts as high as 38 mph. Chance of precipitation is 20%.

    Low: 54 °F

    Mostly Cloudy
    and Breezy
    then Slight
    Chance Rain

  • Wednesday

    Wednesday: Sunny, with a high near 71. West wind 7 to 14 mph, with gusts as high as 23 mph.

    High: 71 °F

    Sunny

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers after midnight. Partly cloudy, with a low around 49. South wind around 6 mph.

    Low: 49 °F

    Mostly Clear
    then Slight
    Chance
    Showers

  • Thursday

    Thursday: A chance of showers, with thunderstorms also possible after noon. Mostly sunny, with a high near 72. Chance of precipitation is 40%.

    High: 72 °F

    Chance
    Showers then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A 20 percent chance of showers before midnight. Mostly clear, with a low around 37.

    Low: 37 °F

    Slight Chance
    Showers then
    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 50.

    High: 50 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 30.

    Low: 30 °F

    Partly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 42. South wind around 6 mph.
Tuesday
Mostly cloudy, with a high near 61. South wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 29 mph.
Tuesday Night
A slight chance of rain between midnight and 3am. Cloudy, then gradually becoming partly cloudy, with a low around 54. Breezy, with a south wind 14 to 21 mph, with gusts as high as 38 mph. Chance of precipitation is 20%.
Wednesday
Sunny, with a high near 71. West wind 7 to 14 mph, with gusts as high as 23 mph.
Wednesday Night
A 20 percent chance of showers after midnight. Partly cloudy, with a low around 49. South wind around 6 mph.
Thursday
A chance of showers, with thunderstorms also possible after noon. Mostly sunny, with a high near 72. Chance of precipitation is 40%.
Thursday Night
A 20 percent chance of showers before midnight. Mostly clear, with a low around 37.
Friday
Sunny, with a high near 50.
Friday Night
Partly cloudy, with a low around 30.
Saturday
A 30 percent chance of snow, mainly after noon. Mostly sunny, with a high near 45.
Saturday Night
A 20 percent chance of snow. Mostly clear, with a low around 26.
Sunday
Sunny, with a high near 40.
Sunday Night
Mostly clear, with a low around 19.
Monday
Sunny, with a high near 40.
Basemap Options
Click map to change the forecast location
Loading map...
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:
1:01 am CST Feb 17, 2026
Forecast Valid:
2am CST Feb 17, 2026-6pm CST Feb 23, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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