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.

Overcast

27°F

-3°C

Humidity 39%
Wind Speed SW 6 mph
Barometer 30.02 in
Dewpoint 5°F (-15°C)
Visibility 10.00 mi
Wind Chill20°F (-7°C)
Last update 18 Jan 5:50 pm CST
Extended Forecast for

4 Miles SSW South Roxana IL

Cold Weather Advisory January 19, 03:00am until January 19, 10:00am
Click here for hazard details and duration
Cold Weather Advisory

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 11. Blustery, with a southwest wind 6 to 11 mph becoming northwest 15 to 20 mph after midnight. Winds could gust as high as 33 mph.

    Low: 11 °F

    Mostly Cloudy
    then Partly
    Cloudy and
    Blustery

  • M.L.King Day

    M.L.King Day: Sunny, with a high near 21. Northwest wind 9 to 18 mph, with gusts as high as 31 mph.

    High: 21 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 13. Light and variable wind becoming west around 6 mph in the evening.

    Low: 13 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 37. Southwest wind 5 to 9 mph.

    High: 37 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 28. Southeast wind 7 to 11 mph becoming southwest after midnight. Winds could gust as high as 21 mph.

    Low: 28 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 46.

    High: 46 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 22.

    Low: 22 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 36.

    High: 36 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 22.

    Low: 22 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 11. Blustery, with a southwest wind 6 to 11 mph becoming northwest 15 to 20 mph after midnight. Winds could gust as high as 33 mph.
M.L.King Day
Sunny, with a high near 21. Northwest wind 9 to 18 mph, with gusts as high as 31 mph.
Monday Night
Mostly clear, with a low around 13. Light and variable wind becoming west around 6 mph in the evening.
Tuesday
Mostly sunny, with a high near 37. Southwest wind 5 to 9 mph.
Tuesday Night
Mostly cloudy, with a low around 28. Southeast wind 7 to 11 mph becoming southwest after midnight. Winds could gust as high as 21 mph.
Wednesday
Mostly sunny, with a high near 46.
Wednesday Night
Partly cloudy, with a low around 22.
Thursday
Sunny, with a high near 36.
Thursday Night
Partly cloudy, with a low around 22.
Friday
Mostly cloudy, with a high near 38.
Friday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 15.
Saturday
A 30 percent chance of snow. Mostly cloudy, with a high near 25.
Saturday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 6.
Sunday
A 20 percent chance of snow. Mostly sunny and cold, with a high near 20.
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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:
5:51 pm CST Jan 18, 2026
Forecast Valid:
6pm CST Jan 18, 2026-6pm CST Jan 25, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation