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.

Fog/Mist

37°F

3°C

Humidity 93%
Wind Speed NE 9 mph
Barometer 30.28 in
Dewpoint 36°F (2°C)
Visibility 2.00 mi
Wind Chill30°F (-1°C)
Last update 2 Mar 10:50 am CST
Extended Forecast for

4 Miles SSW South Roxana IL

  • Today

    Today: A 20 percent chance of rain before 5pm. Cloudy, with a high near 43. East wind 6 to 10 mph.

    High: 43 °F

    Slight Chance
    Rain

  • Tonight

    Tonight: A slight chance of rain before 3am, then a chance of rain and thunderstorms between 3am and 4am, then rain and possibly a thunderstorm after 4am. Low around 39. East wind 3 to 6 mph. Chance of precipitation is 90%.

    Low: 39 °F

    Cloudy then
    Rain

  • Tuesday

    Tuesday: Rain and thunderstorms, mainly before 1pm, then rain likely and possibly a thunderstorm after 3pm. High near 60. Southeast wind around 6 mph. Chance of precipitation is 90%.

    High: 60 °F

    Rain

  • Tuesday Night

    Tuesday Night: Rain before 9pm, then rain and possibly a thunderstorm between 9pm and midnight, then showers likely and possibly a thunderstorm after midnight. Low around 50. Northeast wind around 6 mph becoming south after midnight. Chance of precipitation is 80%.

    Low: 50 °F

    Showers

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm. High near 67. South wind 6 to 10 mph. Chance of precipitation is 80%.

    High: 67 °F

    Showers

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm. Low around 54. Chance of precipitation is 80%.

    Low: 54 °F

    Showers

  • Thursday

    Thursday: Showers likely, mainly before noon. Partly sunny, with a high near 69. Chance of precipitation is 60%.

    High: 69 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: A chance of showers, with thunderstorms also possible after midnight. Mostly cloudy, with a low around 57. Chance of precipitation is 50%.

    Low: 57 °F

    Chance
    Showers then
    Chance
    T-storms

  • Friday

    Friday: Showers likely and possibly a thunderstorm before noon, then a chance of showers. Partly sunny, with a high near 78. Chance of precipitation is 60%.

    High: 78 °F

    Showers
    Likely

Detailed Forecast

Today
A 20 percent chance of rain before 5pm. Cloudy, with a high near 43. East wind 6 to 10 mph.
Tonight
A slight chance of rain before 3am, then a chance of rain and thunderstorms between 3am and 4am, then rain and possibly a thunderstorm after 4am. Low around 39. East wind 3 to 6 mph. Chance of precipitation is 90%.
Tuesday
Rain and thunderstorms, mainly before 1pm, then rain likely and possibly a thunderstorm after 3pm. High near 60. Southeast wind around 6 mph. Chance of precipitation is 90%.
Tuesday Night
Rain before 9pm, then rain and possibly a thunderstorm between 9pm and midnight, then showers likely and possibly a thunderstorm after midnight. Low around 50. Northeast wind around 6 mph becoming south after midnight. Chance of precipitation is 80%.
Wednesday
Showers and possibly a thunderstorm. High near 67. South wind 6 to 10 mph. Chance of precipitation is 80%.
Wednesday Night
Showers and possibly a thunderstorm. Low around 54. Chance of precipitation is 80%.
Thursday
Showers likely, mainly before noon. Partly sunny, with a high near 69. Chance of precipitation is 60%.
Thursday Night
A chance of showers, with thunderstorms also possible after midnight. Mostly cloudy, with a low around 57. Chance of precipitation is 50%.
Friday
Showers likely and possibly a thunderstorm before noon, then a chance of showers. Partly sunny, with a high near 78. Chance of precipitation is 60%.
Friday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 56. Chance of precipitation is 70%.
Saturday
Showers likely. Cloudy, with a high near 68. Chance of precipitation is 60%.
Saturday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 46.
Sunday
A 20 percent chance of showers. Mostly cloudy, with a high near 65.
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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:
10:56 am CST Mar 2, 2026
Forecast Valid:
11am CST Mar 2, 2026-6pm CDT Mar 8, 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