National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Fair

70°F

21°C

Humidity 57%
Wind Speed SW 12 mph
Barometer 29.92 in
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 31 Mar 1:35 am CDT
Extended Forecast for

4 Miles SSW South Roxana IL

  • Overnight

    Overnight: Partly cloudy, with a low around 64. South wind 11 to 13 mph, with gusts as high as 21 mph.

    Low: 64 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 30 percent chance of rain and thunderstorms, mainly after 5pm. Partly sunny, with a high near 85. Breezy, with a southwest wind 11 to 20 mph, with gusts as high as 30 mph.

    High: 85 °F

    Chance
    T-storms then
    Chance Rain
    and Breezy

  • Tuesday Night

    Tuesday Night: Rain and thunderstorms likely, then rain after 1am. Low around 59. South wind 5 to 11 mph. Chance of precipitation is 80%.

    Low: 59 °F

    Rain

  • Wednesday

    Wednesday: Rain and possibly a thunderstorm before 4pm, then rain likely. High near 74. South wind 6 to 11 mph. Chance of precipitation is 80%.

    High: 74 °F

    Rain

  • Wednesday Night

    Wednesday Night: A chance of rain, with thunderstorms also possible after 1am. Mostly cloudy, with a low around 64. Southeast wind 10 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 40%.

    Low: 64 °F

    Chance Rain
    then Chance
    T-storms

  • Thursday

    Thursday: Rain and possibly a thunderstorm. High near 78. Breezy. Chance of precipitation is 90%.

    High: 78 °F

    Breezy. Rain
    Likely then
    Rain

  • Thursday Night

    Thursday Night: Rain likely and possibly a thunderstorm. Mostly cloudy, with a low around 59. Chance of precipitation is 70%.

    Low: 59 °F

    Rain Likely

  • Friday

    Friday: A chance of rain, with thunderstorms also possible after 1pm. Partly sunny, with a high near 81. Chance of precipitation is 50%.

    High: 81 °F

    Chance Rain
    then Chance
    T-storms

  • Friday Night

    Friday Night: A chance of rain and thunderstorms, then rain likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 59. Chance of precipitation is 70%.

    Low: 59 °F

    Chance
    T-storms then
    Rain Likely

Detailed Forecast

Overnight
Partly cloudy, with a low around 64. South wind 11 to 13 mph, with gusts as high as 21 mph.
Tuesday
A 30 percent chance of rain and thunderstorms, mainly after 5pm. Partly sunny, with a high near 85. Breezy, with a southwest wind 11 to 20 mph, with gusts as high as 30 mph.
Tuesday Night
Rain and thunderstorms likely, then rain after 1am. Low around 59. South wind 5 to 11 mph. Chance of precipitation is 80%.
Wednesday
Rain and possibly a thunderstorm before 4pm, then rain likely. High near 74. South wind 6 to 11 mph. Chance of precipitation is 80%.
Wednesday Night
A chance of rain, with thunderstorms also possible after 1am. Mostly cloudy, with a low around 64. Southeast wind 10 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 40%.
Thursday
Rain and possibly a thunderstorm. High near 78. Breezy. Chance of precipitation is 90%.
Thursday Night
Rain likely and possibly a thunderstorm. Mostly cloudy, with a low around 59. Chance of precipitation is 70%.
Friday
A chance of rain, with thunderstorms also possible after 1pm. Partly sunny, with a high near 81. Chance of precipitation is 50%.
Friday Night
A chance of rain and thunderstorms, then rain likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 59. Chance of precipitation is 70%.
Saturday
Rain likely and possibly a thunderstorm. Mostly cloudy, with a high near 69. Breezy. Chance of precipitation is 70%.
Saturday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 40.
Sunday
A 20 percent chance of rain. Mostly sunny, with a high near 58.
Sunday Night
Mostly clear, with a low around 35.
Monday
Sunny, with a high near 62.
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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:
1:26 am CDT Mar 31, 2026
Forecast Valid:
1am CDT Mar 31, 2026-6pm CDT Apr 6, 2026
 
Forecast Discussion
 
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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