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.

Mostly Cloudy

7°F

-14°C

Humidity 27%
Wind Speed N 14 mph
Barometer 30.70 in
Dewpoint -20°F (-29°C)
Visibility 10.00 mi
Wind Chill-10°F (-23°C)
Last update 23 Jan 4:50 pm CST
Extended Forecast for

2 Miles WSW Alton IL

Cold Weather Advisory January 23, 05:21pm 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
  •  
    Cold Weather Advisory January 23, 05:21pm until January 24, 12:00pm

    NOW until 12:00pm Sat

    Cold Weather Advisory

  • Tonight

    Low: 3 °F

    Cloudy

  • Saturday

    Saturday: Snow, mainly after 1pm. High near 12. Wind chill values as low as -10. Northeast wind around 11 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.

    High: 12 °F

    Chance Snow
    then Snow

  • Saturday Night

    Saturday Night: Snow. Low around 9. North wind 8 to 10 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.

    Low: 9 °F

    Snow Likely
    then Snow

  • Sunday

    Sunday: Snow. High near 16. North wind 10 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.

    High: 16 °F

    Snow then
    Snow Likely

  • Sunday Night

    Sunday Night: A 20 percent chance of snow before midnight. Partly cloudy, with a low around 0. Northwest wind 9 to 11 mph, with gusts as high as 20 mph.

    Low: 0 °F

    Slight Chance
    Snow then
    Partly Cloudy

  • Monday

    Monday: Mostly sunny and cold, with a high near 15.

    High: 15 °F

    Cold

  • Monday Night

    Monday Night: Mostly clear, with a low around 4.

    Low: 4 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 32.

    High: 32 °F

    Mostly Sunny

Detailed Forecast

Tonight
Cloudy, with a low around 3. Wind chill values as low as -10. Northeast wind 10 to 13 mph, with gusts as high as 20 mph.
Saturday
Snow, mainly after 1pm. High near 12. Wind chill values as low as -10. Northeast wind around 11 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.
Saturday Night
Snow. Low around 9. North wind 8 to 10 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.
Sunday
Snow. High near 16. North wind 10 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.
Sunday Night
A 20 percent chance of snow before midnight. Partly cloudy, with a low around 0. Northwest wind 9 to 11 mph, with gusts as high as 20 mph.
Monday
Mostly sunny and cold, with a high near 15.
Monday Night
Mostly clear, with a low around 4.
Tuesday
Mostly sunny, with a high near 32.
Tuesday Night
Partly cloudy, with a low around 6.
Wednesday
Partly sunny, with a high near 26.
Wednesday Night
Partly cloudy, with a low around 5.
Thursday
Mostly sunny and cold, with a high near 20.
Thursday Night
Partly cloudy, with a low around 5.
Friday
Mostly sunny, with a high near 21.
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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:
4:56 pm CST Jan 23, 2026
Forecast Valid:
5pm CST Jan 23, 2026-6pm CST Jan 30, 2026
 
Forecast Discussion
 
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Additional Resources

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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