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.

Light Snow

21°F

-6°C

Humidity 85%
Wind Speed N 7 G 20 mph
Barometer 29.96 in
Dewpoint 17°F (-8°C)
Visibility 5.00 mi
Wind Chill12°F (-11°C)
Last update 5 Jan 11:55 pm CST
Extended Forecast for

Alton IL

Winter Storm Warning January 6, 12:21am until January 6, 06:00am
Click here for hazard details and duration
Winter Storm Warning
  •  
    Winter Storm Warning January 6, 12:21am until January 6, 06:00am

    NOW until 6:00am Mon

    Winter Storm Warning

  • Overnight

    Low: 19 °F

    Heavy Snow
    and Patchy
    Blowing Snow

  • Monday

    Monday: A 20 percent chance of snow before 7am. Mostly cloudy, with a high near 26. Northwest wind 10 to 16 mph, with gusts as high as 30 mph.

    High: 26 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 8. Northwest wind 6 to 10 mph, with gusts as high as 20 mph.

    Low: 8 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 23. West wind 5 to 7 mph.

    High: 23 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 5. Northwest wind around 6 mph.

    Low: 5 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and cold, with a high near 20.

    High: 20 °F

    Cold

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 1.

    Low: 1 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 26.

    High: 26 °F

    Sunny

Detailed Forecast

Overnight
Snow, mainly before 3am. The snow could be heavy at times. Patchy blowing snow before 3am. Low around 19. North wind around 17 mph, with gusts as high as 31 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of 3 to 5 inches possible.
Monday
A 20 percent chance of snow before 7am. Mostly cloudy, with a high near 26. Northwest wind 10 to 16 mph, with gusts as high as 30 mph.
Monday Night
Partly cloudy, with a low around 8. Northwest wind 6 to 10 mph, with gusts as high as 20 mph.
Tuesday
Mostly sunny, with a high near 23. West wind 5 to 7 mph.
Tuesday Night
Mostly clear, with a low around 5. Northwest wind around 6 mph.
Wednesday
Sunny and cold, with a high near 20.
Wednesday Night
Mostly clear, with a low around 1.
Thursday
Sunny, with a high near 26.
Thursday Night
Mostly cloudy, with a low around 18.
Friday
A 20 percent chance of snow. Mostly cloudy, with a high near 30.
Friday Night
Mostly cloudy, with a low around 20.
Saturday
Partly sunny, with a high near 29.
Saturday Night
Mostly cloudy, with a low around 16.
Sunday
Mostly cloudy, with a high near 32.
Click Map For Forecast
Disclaimer
Map Legend

ABOUT THIS FORECAST

 
Point Forecast:
Alton IL
 38.91°N 90.16°W (Elev. 505 ft)
Last Update:
10:27 pm CST Jan 5, 2025
Forecast Valid:
12am CST Jan 6, 2025-6pm CST Jan 12, 2025
 
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