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

34°F

1°C

Humidity 61%
Wind Speed E 7 mph
Barometer 30.31 in
Dewpoint 22°F (-6°C)
Visibility 10.00 mi
Wind Chill28°F (-2°C)
Last update 28 Nov 10:55 pm CST
Extended Forecast for

2 Miles WSW Alton IL

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

  • Tonight

    Tonight: Snow, mainly after 2am. Low around 30. Southeast wind 8 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of around an inch possible.

    Low: 30 °F

    Snow

  • Saturday

    Saturday: Rain and snow, possibly mixed with sleet before 1pm, then rain, possibly mixed with snow between 1pm and 4pm, then rain after 4pm. High near 38. Southeast wind 14 to 18 mph, with gusts as high as 33 mph. Chance of precipitation is 100%. New snow and sleet accumulation of 2 to 4 inches possible.

    High: 38 °F

    Wintry Mix

  • Saturday Night

    Saturday Night: A 50 percent chance of rain before 9pm. Cloudy, with a low around 24. Breezy, with a south wind 15 to 20 mph becoming west after midnight. Winds could gust as high as 33 mph.

    Low: 24 °F

    Breezy.
    Chance Rain
    then Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 30. Northwest wind 10 to 16 mph, with gusts as high as 25 mph.

    High: 30 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 18. Northwest wind 5 to 9 mph becoming light and variable after midnight.

    Low: 18 °F

    Mostly Cloudy

  • Monday

    Monday: A 30 percent chance of snow after noon. Cloudy, with a high near 29.

    High: 29 °F

    Cloudy then
    Chance Snow

  • Monday Night

    Monday Night: A 50 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 18.

    Low: 18 °F

    Chance Snow
    then Slight
    Chance Snow

  • Tuesday

    Tuesday: Partly sunny, with a high near 30.

    High: 30 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 18.

    Low: 18 °F

    Partly Cloudy

Detailed Forecast

Tonight
Snow, mainly after 2am. Low around 30. Southeast wind 8 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of around an inch possible.
Saturday
Rain and snow, possibly mixed with sleet before 1pm, then rain, possibly mixed with snow between 1pm and 4pm, then rain after 4pm. High near 38. Southeast wind 14 to 18 mph, with gusts as high as 33 mph. Chance of precipitation is 100%. New snow and sleet accumulation of 2 to 4 inches possible.
Saturday Night
A 50 percent chance of rain before 9pm. Cloudy, with a low around 24. Breezy, with a south wind 15 to 20 mph becoming west after midnight. Winds could gust as high as 33 mph.
Sunday
Mostly cloudy, with a high near 30. Northwest wind 10 to 16 mph, with gusts as high as 25 mph.
Sunday Night
Mostly cloudy, with a low around 18. Northwest wind 5 to 9 mph becoming light and variable after midnight.
Monday
A 30 percent chance of snow after noon. Cloudy, with a high near 29.
Monday Night
A 50 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 18.
Tuesday
Partly sunny, with a high near 30.
Tuesday Night
Partly cloudy, with a low around 18.
Wednesday
Partly sunny, with a high near 38.
Wednesday Night
Mostly cloudy, with a low around 19.
Thursday
Partly sunny, with a high near 30.
Thursday Night
Mostly cloudy, with a low around 19.
Friday
Partly sunny, with a high near 38.
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:
10:06 pm CST Nov 28, 2025
Forecast Valid:
11pm CST Nov 28, 2025-6pm CST Dec 5, 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