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

38°F

3°C

Humidity 90%
Wind Speed W 5 mph
Barometer 30.07 in
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Wind Chill34°F (1°C)
Last update 8 Mar 1:35 am CDT
Extended Forecast for

4 Miles SSW South Roxana IL

  • Overnight

    Overnight: Patchy fog after 4am. Otherwise, partly cloudy, with a low around 35. West wind 3 to 5 mph.

    Low: 35 °F

    Patchy Fog

  • Sunday

    Sunday: Patchy fog before 7am. Otherwise, sunny, with a high near 66. Light southwest wind increasing to 5 to 10 mph in the morning.

    High: 66 °F

    Patchy Fog
    then Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 45. South wind around 7 mph.

    Low: 45 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 76. South wind 6 to 16 mph, with gusts as high as 23 mph.

    High: 76 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 60. South wind 8 to 11 mph, with gusts as high as 20 mph.

    Low: 60 °F

    Mostly Clear

  • Tuesday

    Tuesday: Rain likely, with thunderstorms also possible after 3pm. Mostly cloudy, with a high near 81. Chance of precipitation is 60%.

    High: 81 °F

    Slight Chance
    Rain then
    Rain Likely

  • Tuesday Night

    Tuesday Night: Rain and possibly a thunderstorm. Low around 55. Chance of precipitation is 100%.

    Low: 55 °F

    Rain

  • Wednesday

    Wednesday: Rain and possibly a thunderstorm before noon, then a chance of rain. High near 67. Breezy. Chance of precipitation is 100%.

    High: 67 °F

    Breezy. Rain
    then Chance
    Rain

  • Wednesday Night

    Wednesday Night: A 20 percent chance of rain before midnight. Partly cloudy, with a low around 32. Breezy.

    Low: 32 °F

    Slight Chance
    Rain and
    Breezy then
    Mostly Clear

Detailed Forecast

Overnight
Patchy fog after 4am. Otherwise, partly cloudy, with a low around 35. West wind 3 to 5 mph.
Sunday
Patchy fog before 7am. Otherwise, sunny, with a high near 66. Light southwest wind increasing to 5 to 10 mph in the morning.
Sunday Night
Clear, with a low around 45. South wind around 7 mph.
Monday
Sunny, with a high near 76. South wind 6 to 16 mph, with gusts as high as 23 mph.
Monday Night
Mostly clear, with a low around 60. South wind 8 to 11 mph, with gusts as high as 20 mph.
Tuesday
Rain likely, with thunderstorms also possible after 3pm. Mostly cloudy, with a high near 81. Chance of precipitation is 60%.
Tuesday Night
Rain and possibly a thunderstorm. Low around 55. Chance of precipitation is 100%.
Wednesday
Rain and possibly a thunderstorm before noon, then a chance of rain. High near 67. Breezy. Chance of precipitation is 100%.
Wednesday Night
A 20 percent chance of rain before midnight. Partly cloudy, with a low around 32. Breezy.
Thursday
Sunny, with a high near 54.
Thursday Night
Mostly cloudy, with a low around 44.
Friday
Partly sunny, with a high near 66.
Friday Night
Mostly cloudy, with a low around 38.
Saturday
Partly sunny, with a high near 55.
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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:
12:26 am CST Mar 8, 2026
Forecast Valid:
12am CST Mar 8, 2026-6pm CDT Mar 14, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation