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 Vrbl 3 mph
Barometer 30.49 in
Dewpoint 16°F (-9°C)
Visibility 10.00 mi
Last update 28 Nov 10:50 am 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

  • Today

    Today: Increasing clouds, with a high near 39. Northwest wind around 5 mph becoming light and variable.

    High: 39 °F

    Increasing
    Clouds

  • Tonight

    Tonight: Snow, mainly after 3am. Low around 30. Southeast wind 6 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 2 inches possible.

    Low: 30 °F

    Cloudy then
    Snow

  • Saturday

    Saturday: Rain and snow, possibly mixed with sleet before noon, then rain, possibly mixed with snow between noon and 3pm, then rain after 3pm. High near 39. Southeast wind 14 to 18 mph, with gusts as high as 32 mph. Chance of precipitation is 100%. New snow and sleet accumulation of 1 to 3 inches possible.

    High: 39 °F

    Wintry Mix

  • Saturday Night

    Saturday Night: Rain likely, mixing with snow after 9pm, then gradually ending. Cloudy, with a low around 25. South wind 14 to 16 mph becoming northwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.

    Low: 25 °F

    Rain/Snow
    Likely 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 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 40 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 18.

    Low: 18 °F

    Chance Snow

  • Tuesday

    Tuesday: Partly sunny, with a high near 31.

    High: 31 °F

    Partly Sunny

Detailed Forecast

Today
Increasing clouds, with a high near 39. Northwest wind around 5 mph becoming light and variable.
Tonight
Snow, mainly after 3am. Low around 30. Southeast wind 6 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 2 inches possible.
Saturday
Rain and snow, possibly mixed with sleet before noon, then rain, possibly mixed with snow between noon and 3pm, then rain after 3pm. High near 39. Southeast wind 14 to 18 mph, with gusts as high as 32 mph. Chance of precipitation is 100%. New snow and sleet accumulation of 1 to 3 inches possible.
Saturday Night
Rain likely, mixing with snow after 9pm, then gradually ending. Cloudy, with a low around 25. South wind 14 to 16 mph becoming northwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.
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 15.
Monday
A 20 percent chance of snow after noon. Mostly cloudy, with a high near 28.
Monday Night
A 40 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 18.
Tuesday
Partly sunny, with a high near 31.
Tuesday Night
Partly cloudy, with a low around 20.
Wednesday
Partly sunny, with a high near 39.
Wednesday Night
Mostly cloudy, with a low around 22.
Thursday
Partly sunny, with a high near 32.
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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:
8:01 am CST Nov 28, 2025
Forecast Valid:
10am CST Nov 28, 2025-6pm CST Dec 4, 2025
 
Forecast Discussion
 
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Additional Resources

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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