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.

Partly Cloudy

21°F

-6°C

Humidity 86%
Wind Speed E 3 mph
Barometer 30.43 in
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Last update 1 Dec 6:50 am CST
Extended Forecast for

2 Miles WSW Alton IL

  • Today

    Today: Snow likely, mainly after 4pm. Cloudy, with a high near 30. Light and variable wind becoming east around 5 mph. Chance of precipitation is 70%. Total daytime snow accumulation of less than a half inch possible.

    High: 30 °F

    Mostly Cloudy
    then Snow
    Likely

  • Tonight

    Tonight: Snow, mainly before 11pm. Low around 19. Calm wind becoming northwest around 6 mph after midnight. Chance of precipitation is 100%. New snow accumulation of 1 to 2 inches possible.

    Low: 19 °F

    Snow then
    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 30. Northwest wind 5 to 7 mph becoming south in the afternoon.

    High: 30 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 20. South wind 3 to 6 mph.

    Low: 20 °F

    Mostly Clear

  • Wednesday

    Wednesday: Partly sunny, with a high near 39. South wind around 7 mph becoming west in the afternoon.

    High: 39 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 14.

    Low: 14 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 22.

    High: 22 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 11.

    Low: 11 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Friday

    Friday: A 30 percent chance of snow. Mostly cloudy, with a high near 34.

    High: 34 °F

    Chance Snow

Detailed Forecast

Today
Snow likely, mainly after 4pm. Cloudy, with a high near 30. Light and variable wind becoming east around 5 mph. Chance of precipitation is 70%. Total daytime snow accumulation of less than a half inch possible.
Tonight
Snow, mainly before 11pm. Low around 19. Calm wind becoming northwest around 6 mph after midnight. Chance of precipitation is 100%. New snow accumulation of 1 to 2 inches possible.
Tuesday
Partly sunny, with a high near 30. Northwest wind 5 to 7 mph becoming south in the afternoon.
Tuesday Night
Mostly clear, with a low around 20. South wind 3 to 6 mph.
Wednesday
Partly sunny, with a high near 39. South wind around 7 mph becoming west in the afternoon.
Wednesday Night
Mostly cloudy, with a low around 14.
Thursday
Mostly sunny, with a high near 22.
Thursday Night
A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 11.
Friday
A 30 percent chance of snow. Mostly cloudy, with a high near 34.
Friday Night
A 20 percent chance of rain before midnight. Mostly cloudy, with a low around 25.
Saturday
Partly sunny, with a high near 39.
Saturday Night
Mostly cloudy, with a low around 25.
Sunday
Mostly cloudy, with a high near 36.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WSW Alton IL
 38.88°N 90.19°W (Elev. 407 ft)
Last Update:
4:36 am CST Dec 1, 2025
Forecast Valid:
8am CST Dec 1, 2025-6pm CST Dec 7, 2025
 
Forecast Discussion
 
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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