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

39°F

4°C

Humidity 26%
Wind Speed Vrbl 3 mph
Barometer 30.29 in
Dewpoint 7°F (-14°C)
Visibility 10.00 mi
Last update 22 Jan 1:50 pm CST
Extended Forecast for

2 Miles WSW Alton IL

Cold Weather Advisory January 23, 03:00am until January 24, 12:00pm
Winter Storm Warning January 24, 12:00am until January 25, 06:00pm
Click here for hazard details and duration
Cold Weather Advisory
Winter Storm Warning

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 38. West wind 5 to 7 mph.

    High: 38 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 8. Light northwest wind becoming north 11 to 16 mph in the evening. Winds could gust as high as 25 mph.

    Low: 8 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny and cold, with a high near 12. Wind chill values as low as -10. North wind 11 to 16 mph, with gusts as high as 25 mph.

    High: 12 °F

    Cold

  • Friday Night

    Friday Night: A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 4. Wind chill values as low as -10. Northeast wind around 11 mph.

    Low: 4 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Saturday

    Saturday: Snow. High near 13. Northeast wind around 10 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

    High: 13 °F

    Snow

  • Saturday Night

    Saturday Night: Snow. Low around 9. Chance of precipitation is 90%. New snow accumulation of 3 to 5 inches possible.

    Low: 9 °F

    Snow

  • Sunday

    Sunday: Snow likely, mainly before noon. Cloudy and cold, with a high near 16. Chance of precipitation is 70%.

    High: 16 °F

    Snow Likely

  • Sunday Night

    Sunday Night: A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 0.

    Low: 0 °F

    Slight Chance
    Snow then
    Partly Cloudy

  • Monday

    Monday: Sunny and cold, with a high near 17.

    High: 17 °F

    Cold

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 38. West wind 5 to 7 mph.
Tonight
Partly cloudy, with a low around 8. Light northwest wind becoming north 11 to 16 mph in the evening. Winds could gust as high as 25 mph.
Friday
Partly sunny and cold, with a high near 12. Wind chill values as low as -10. North wind 11 to 16 mph, with gusts as high as 25 mph.
Friday Night
A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 4. Wind chill values as low as -10. Northeast wind around 11 mph.
Saturday
Snow. High near 13. Northeast wind around 10 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.
Saturday Night
Snow. Low around 9. Chance of precipitation is 90%. New snow accumulation of 3 to 5 inches possible.
Sunday
Snow likely, mainly before noon. Cloudy and cold, with a high near 16. Chance of precipitation is 70%.
Sunday Night
A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 0.
Monday
Sunny and cold, with a high near 17.
Monday Night
Mostly clear, with a low around 6.
Tuesday
Mostly sunny, with a high near 32.
Tuesday Night
Mostly cloudy, with a low around 14.
Wednesday
Partly sunny, with a high near 26.
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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:
1:26 pm CST Jan 22, 2026
Forecast Valid:
2pm CST Jan 22, 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