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

37°F

3°C

Humidity 40%
Wind Speed NW 15 G 24 mph
Barometer 30.21 in
Dewpoint 15°F (-9°C)
Visibility 10.00 mi
Wind Chill28°F (-2°C)
Last update 21 Jan 10:35 pm CST
Extended Forecast for

2 Miles WSW Alton IL

Winter Storm Watch January 24, 12:00am until January 25, 12:00pm
Click here for hazard details and duration
Winter Storm Watch

  • Tonight

    Tonight: Partly cloudy, with a low around 24. Northwest wind 5 to 11 mph, with gusts as high as 26 mph.

    Low: 24 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 38. West wind 3 to 7 mph.

    High: 38 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 10. Light and variable wind becoming north 10 to 15 mph in the evening. Winds could gust as high as 23 mph.

    Low: 10 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy and cold, with a high near 15. North wind 13 to 15 mph, with gusts as high as 23 mph.

    High: 15 °F

    Cold

  • Friday Night

    Friday Night: A 30 percent chance of snow after midnight. Cloudy, with a low around 3. North wind around 11 mph.

    Low: 3 °F

    Mostly Cloudy
    then Chance
    Snow

  • Saturday

    Saturday: Snow likely, mainly after noon. Cloudy and cold, with a high near 15. Chance of precipitation is 60%. New snow accumulation of around an inch possible.

    High: 15 °F

    Snow Likely

  • Saturday Night

    Saturday Night: Snow. Low around 8. Chance of precipitation is 80%.

    Low: 8 °F

    Snow

  • Sunday

    Sunday: A 40 percent chance of snow, mainly before noon. Partly sunny and cold, with a high near 19.

    High: 19 °F

    Chance Snow

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around -2.

    Low: -2 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 24. Northwest wind 5 to 11 mph, with gusts as high as 26 mph.
Thursday
Partly sunny, with a high near 38. West wind 3 to 7 mph.
Thursday Night
Mostly cloudy, with a low around 10. Light and variable wind becoming north 10 to 15 mph in the evening. Winds could gust as high as 23 mph.
Friday
Mostly cloudy and cold, with a high near 15. North wind 13 to 15 mph, with gusts as high as 23 mph.
Friday Night
A 30 percent chance of snow after midnight. Cloudy, with a low around 3. North wind around 11 mph.
Saturday
Snow likely, mainly after noon. Cloudy and cold, with a high near 15. Chance of precipitation is 60%. New snow accumulation of around an inch possible.
Saturday Night
Snow. Low around 8. Chance of precipitation is 80%.
Sunday
A 40 percent chance of snow, mainly before noon. Partly sunny and cold, with a high near 19.
Sunday Night
Partly cloudy, with a low around -2.
Monday
Sunny and cold, with a high near 16.
Monday Night
Mostly clear, with a low around 3.
Tuesday
Mostly sunny, with a high near 29.
Tuesday Night
Partly cloudy, with a low around 13.
Wednesday
Partly sunny, with a high near 25.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WSW Alton IL
 38.88°N 90.19°W (Elev. 407 ft)
Last Update:
9:51 pm CST Jan 21, 2026
Forecast Valid:
11pm CST Jan 21, 2026-6pm CST Jan 28, 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