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

41°F

5°C

Humidity 57%
Wind Speed S 8 mph
Barometer 30.09 in
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Wind Chill36°F (2°C)
Last update 13 Feb 9:50 pm CST
Extended Forecast for

4 Miles SSW South Roxana IL

  • Tonight

    Tonight: Increasing clouds, with a low around 37. Southeast wind around 5 mph becoming calm after midnight.

    Low: 37 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Rain, mainly after 9am. High near 52. Calm wind becoming southeast 5 to 9 mph in the morning. Chance of precipitation is 90%.

    High: 52 °F

    Rain Likely
    then Rain

  • Saturday Night

    Saturday Night: Rain, mainly before 5am. Low around 44. East wind around 8 mph. Chance of precipitation is 90%.

    Low: 44 °F

    Rain

  • Sunday

    Sunday: A 20 percent chance of rain before noon. Cloudy through mid morning, then gradual clearing, with a high near 58. Northeast wind 6 to 10 mph.

    High: 58 °F

    Slight Chance
    Rain then
    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 38. North wind around 5 mph becoming calm in the evening.

    Low: 38 °F

    Mostly Clear

  • Washington's Birthday

    Washington's Birthday: Mostly sunny, with a high near 62.

    High: 62 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 44.

    Low: 44 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 65.

    High: 65 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 55.

    Low: 55 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Increasing clouds, with a low around 37. Southeast wind around 5 mph becoming calm after midnight.
Saturday
Rain, mainly after 9am. High near 52. Calm wind becoming southeast 5 to 9 mph in the morning. Chance of precipitation is 90%.
Saturday Night
Rain, mainly before 5am. Low around 44. East wind around 8 mph. Chance of precipitation is 90%.
Sunday
A 20 percent chance of rain before noon. Cloudy through mid morning, then gradual clearing, with a high near 58. Northeast wind 6 to 10 mph.
Sunday Night
Mostly clear, with a low around 38. North wind around 5 mph becoming calm in the evening.
Washington's Birthday
Mostly sunny, with a high near 62.
Monday Night
Mostly cloudy, with a low around 44.
Tuesday
Mostly cloudy, with a high near 65.
Tuesday Night
Mostly cloudy, with a low around 55.
Wednesday
Partly sunny, with a high near 72.
Wednesday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 47.
Thursday
A 20 percent chance of rain. Mostly sunny, with a high near 64.
Thursday Night
Partly cloudy, with a low around 40.
Friday
Mostly sunny, with a high near 58.
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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:
8:37 pm CST Feb 13, 2026
Forecast Valid:
9pm CST Feb 13, 2026-6pm CST Feb 20, 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