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

20°F

-7°C

Humidity 45%
Wind Speed NW 7 mph
Barometer 30.48 in
Dewpoint 2°F (-17°C)
Visibility 10.00 mi
Wind Chill11°F (-12°C)
Last update 23 Jan 3:35 am CST
Extended Forecast for

2 Miles WSW Alton IL

Cold Weather Advisory 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 until January 24, 12:00pm

    NOW until 12:00pm Sat

    Cold Weather Advisory

  • Overnight

    Low: 8 °F

    Mostly Cloudy

  • Friday

    Friday: Cloudy through mid morning, then gradual clearing and cold, with a temperature falling to around 8 by 9am. Wind chill values as low as -10. North wind 14 to 17 mph, with gusts as high as 25 mph.

    High: 14 °F⇓

    Cold

  • Friday Night

    Friday Night: Increasing clouds, with a low around 3. Wind chill values as low as -10. Northeast wind 10 to 13 mph.

    Low: 3 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Snow, mainly after noon. High near 12. Wind chill values as low as -10. Northeast wind around 10 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.

    High: 12 °F

    Chance Snow
    then Snow

  • Saturday Night

    Saturday Night: Snow. Low around 9. Northeast wind 7 to 10 mph. Chance of precipitation is 100%. 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%. New snow accumulation of 2 to 4 inches possible.

    High: 16 °F

    Snow Likely

  • Sunday Night

    Sunday Night: A 20 percent chance of snow before midnight. Partly cloudy, with a low around -1.

    Low: -1 °F

    Slight Chance
    Snow then
    Partly Cloudy

  • Monday

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

    High: 17 °F

    Cold

Detailed Forecast

Overnight
Mostly cloudy, with a low around 8. North wind 11 to 15 mph, with gusts as high as 24 mph.
Friday
Cloudy through mid morning, then gradual clearing and cold, with a temperature falling to around 8 by 9am. Wind chill values as low as -10. North wind 14 to 17 mph, with gusts as high as 25 mph.
Friday Night
Increasing clouds, with a low around 3. Wind chill values as low as -10. Northeast wind 10 to 13 mph.
Saturday
Snow, mainly after noon. High near 12. Wind chill values as low as -10. Northeast wind around 10 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.
Saturday Night
Snow. Low around 9. Northeast wind 7 to 10 mph. Chance of precipitation is 100%. 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%. 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 -1.
Monday
Sunny and cold, with a high near 17.
Monday Night
Clear, with a low around 6.
Tuesday
Mostly sunny, with a high near 32.
Tuesday Night
Mostly cloudy, with a low around 9.
Wednesday
Partly sunny, with a high near 24.
Wednesday Night
Partly cloudy, with a low around 3.
Thursday
Mostly sunny and cold, with a high near 18.
Basemap Options
Click map to change the forecast location
Loading map...
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:
3:16 am CST Jan 23, 2026
Forecast Valid:
3am CST Jan 23, 2026-6pm CST Jan 29, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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