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

52°F

11°C

Humidity 97%
Wind Speed E 5 mph
Barometer 29.58 in
Dewpoint 51°F (11°C)
Visibility 0.25 mi
Wind Chill51°F (11°C)
Last update 19 Feb 6:35 am CST
Extended Forecast for

4 Miles SSW South Roxana IL

Dense Fog Advisory until February 19, 09:00am
Click here for hazard details and duration
...
  •  
    Dense Fog Advisory until February 19, 09:00am

    NOW until 9:00am Thu

    Dense Fog Advisory

  • Today

    High: 66 °F

    T-storms
    Likely and
    Areas Dense
    Fog

  • Tonight

    Tonight: Partly cloudy, with a low around 37. Breezy, with a west wind 11 to 20 mph, with gusts as high as 33 mph.

    Low: 37 °F

    Partly Cloudy
    then Partly
    Cloudy and
    Breezy

  • Friday

    Friday: Sunny, with a high near 49. West wind 8 to 18 mph, with gusts as high as 29 mph.

    High: 49 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 30. North wind 3 to 6 mph.

    Low: 30 °F

    Partly Cloudy

  • Saturday

    Saturday: A slight chance of snow after noon, mixing with rain after 3pm. Mostly sunny, with a high near 46. Northwest wind 6 to 11 mph. Chance of precipitation is 20%.

    High: 46 °F

    Mostly Sunny
    then Slight
    Chance
    Rain/Snow

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 25.

    Low: 25 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 39. Breezy.

    High: 39 °F

    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 19.

    Low: 19 °F

    Mostly Clear

Detailed Forecast

Today
Showers and thunderstorms likely, mainly before 2pm. Areas of dense fog before 9am. Otherwise, mostly cloudy, with a high near 66. Southeast wind 5 to 14 mph becoming southwest in the afternoon. Winds could gust as high as 23 mph. Chance of precipitation is 60%.
Tonight
Partly cloudy, with a low around 37. Breezy, with a west wind 11 to 20 mph, with gusts as high as 33 mph.
Friday
Sunny, with a high near 49. West wind 8 to 18 mph, with gusts as high as 29 mph.
Friday Night
Partly cloudy, with a low around 30. North wind 3 to 6 mph.
Saturday
A slight chance of snow after noon, mixing with rain after 3pm. Mostly sunny, with a high near 46. Northwest wind 6 to 11 mph. Chance of precipitation is 20%.
Saturday Night
Mostly clear, with a low around 25.
Sunday
Sunny, with a high near 39. Breezy.
Sunday Night
Mostly clear, with a low around 19.
Monday
Sunny, with a high near 37.
Monday Night
Mostly clear, with a low around 20.
Tuesday
Mostly sunny, with a high near 50.
Tuesday Night
Mostly cloudy, with a low around 38.
Wednesday
Mostly cloudy, with a high near 60.
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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:
6:26 am CST Feb 19, 2026
Forecast Valid:
7am CST Feb 19, 2026-6pm CST Feb 25, 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