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.

Overcast

34°F

1°C

Humidity 87%
Wind Speed Calm
Barometer 30.15 in
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Last update 3 Dec 5:50 pm CST
Extended Forecast for

Pontoon Beach IL

  • Tonight

    Tonight: A chance of snow before 3am, then a chance of flurries between 3am and 4am. Cloudy, with a low around 13. Light north wind increasing to 8 to 13 mph in the evening. Winds could gust as high as 23 mph. Chance of precipitation is 50%.

    Low: 13 °F

    Chance Snow

  • Thursday

    Thursday: Cloudy through mid morning, then gradual clearing, with a high near 23. North wind 5 to 8 mph.

    High: 23 °F

    Gradual
    Clearing

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 13. Light and variable wind becoming south around 5 mph after midnight.

    Low: 13 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 38. Calm wind becoming south around 6 mph in the morning.

    High: 38 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 25. South wind around 5 mph becoming calm in the evening.

    Low: 25 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 38.

    High: 38 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A slight chance of freezing rain after midnight. Mostly cloudy, with a low around 26. Chance of precipitation is 20%.

    Low: 26 °F

    Mostly Cloudy
    then Slight
    Chance
    Freezing Rain

  • Sunday

    Sunday: A 20 percent chance of snow before noon. Mostly cloudy, with a high near 34.

    High: 34 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 16.

    Low: 16 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A chance of snow before 3am, then a chance of flurries between 3am and 4am. Cloudy, with a low around 13. Light north wind increasing to 8 to 13 mph in the evening. Winds could gust as high as 23 mph. Chance of precipitation is 50%.
Thursday
Cloudy through mid morning, then gradual clearing, with a high near 23. North wind 5 to 8 mph.
Thursday Night
Partly cloudy, with a low around 13. Light and variable wind becoming south around 5 mph after midnight.
Friday
Mostly sunny, with a high near 38. Calm wind becoming south around 6 mph in the morning.
Friday Night
Mostly cloudy, with a low around 25. South wind around 5 mph becoming calm in the evening.
Saturday
Partly sunny, with a high near 38.
Saturday Night
A slight chance of freezing rain after midnight. Mostly cloudy, with a low around 26. Chance of precipitation is 20%.
Sunday
A 20 percent chance of snow before noon. Mostly cloudy, with a high near 34.
Sunday Night
Mostly cloudy, with a low around 16.
Monday
Mostly sunny, with a high near 32.
Monday Night
Partly cloudy, with a low around 22.
Tuesday
Mostly sunny, with a high near 43.
Tuesday Night
Mostly cloudy, with a low around 33.
Wednesday
A 20 percent chance of rain. Partly sunny, with a high near 49.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Pontoon Beach IL
 38.73°N 90.06°W (Elev. 423 ft)
Last Update:
4:56 pm CST Dec 3, 2025
Forecast Valid:
6pm CST Dec 3, 2025-6pm CST Dec 10, 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