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

30°F

-1°C

Humidity 55%
Wind Speed NW 9 mph
Barometer 30.38 in
Dewpoint 16°F (-9°C)
Visibility 10.00 mi
Wind Chill22°F (-6°C)
Last update 27 Nov 9:50 pm CST
Extended Forecast for

2 Miles WSW Alton IL

Winter Storm Watch November 29, 12:00am until November 30, 12:00am
Click here for hazard details and duration
Winter Storm Watch

  • Tonight

    Tonight: Clear, with a low around 22. Northwest wind around 6 mph.

    Low: 22 °F

    Clear

  • Friday

    Friday: Increasing clouds, with a high near 37. Light and variable wind becoming southeast around 5 mph in the afternoon.

    High: 37 °F

    Increasing
    Clouds

  • Friday Night

    Friday Night: Snow, mainly after 3am. Low around 30. Light southeast wind increasing to 6 to 11 mph in the evening. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.

    Low: 30 °F

    Slight Chance
    Snow then
    Snow

  • Saturday

    Saturday: Snow before noon, then rain and snow. High near 37. Southeast wind 13 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.

    High: 37 °F

    Snow then
    Rain/Snow

  • Saturday Night

    Saturday Night: Rain and snow, mainly before midnight. Low around 25. South wind 11 to 14 mph becoming northwest after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

    Low: 25 °F

    Rain/Snow
    then Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 29.

    High: 29 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 15.

    Low: 15 °F

    Mostly Cloudy

  • Monday

    Monday: A 20 percent chance of snow after noon. Mostly cloudy, with a high near 28.

    High: 28 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Monday Night

    Monday Night: A 30 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 17.

    Low: 17 °F

    Chance Snow

Detailed Forecast

Tonight
Clear, with a low around 22. Northwest wind around 6 mph.
Friday
Increasing clouds, with a high near 37. Light and variable wind becoming southeast around 5 mph in the afternoon.
Friday Night
Snow, mainly after 3am. Low around 30. Light southeast wind increasing to 6 to 11 mph in the evening. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.
Saturday
Snow before noon, then rain and snow. High near 37. Southeast wind 13 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.
Saturday Night
Rain and snow, mainly before midnight. Low around 25. South wind 11 to 14 mph becoming northwest after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.
Sunday
Mostly cloudy, with a high near 29.
Sunday Night
Mostly cloudy, with a low around 15.
Monday
A 20 percent chance of snow after noon. Mostly cloudy, with a high near 28.
Monday Night
A 30 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 17.
Tuesday
Mostly sunny, with a high near 32.
Tuesday Night
Partly cloudy, with a low around 19.
Wednesday
Mostly sunny, with a high near 39.
Wednesday Night
Mostly cloudy, with a low around 24.
Thursday
Mostly cloudy, with a high near 36.
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:
9:31 pm CST Nov 27, 2025
Forecast Valid:
9pm CST Nov 27, 2025-6pm CST Dec 4, 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