National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Overcast and Windy

41°F

5°C

Humidity 49%
Wind Speed W 26 G 36 mph
Barometer 30.16 in
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Wind Chill31°F (-1°C)
Last update 26 Nov 9:45 am CST
Extended Forecast for

Pontoon Beach IL

  • Today

    Today: Cloudy early, then gradual clearing, with a high near 44. Breezy, with a west wind 15 to 22 mph, with gusts as high as 39 mph.

    High: 44 °F

    Becoming
    Sunny and
    Breezy

  • Tonight

    Tonight: Increasing clouds, with a low around 29. Northwest wind 9 to 13 mph, with gusts as high as 23 mph.

    Low: 29 °F

    Increasing
    Clouds

  • Thanksgiving Day

    Thanksgiving Day: Sunny, with a high near 43. Northwest wind 8 to 13 mph.

    High: 43 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 23. Northwest wind around 6 mph becoming calm after midnight.

    Low: 23 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 39. Light and variable wind.

    High: 39 °F

    Sunny

  • Friday Night

    Friday Night: Snow likely after 3am. Cloudy, with a low around 30. Chance of precipitation is 60%. New snow accumulation of around an inch possible.

    Low: 30 °F

    Mostly Cloudy
    then Snow
    Likely

  • Saturday

    Saturday: Snow before 9am, then rain, possibly mixed with snow. High near 38. Chance of precipitation is 90%.

    High: 38 °F

    Rain/Snow

  • Saturday Night

    Saturday Night: Rain likely, mainly before midnight. Cloudy, with a low around 29. Chance of precipitation is 70%.

    Low: 29 °F

    Rain Likely
    then Chance
    Rain

  • Sunday

    Sunday: A 30 percent chance of rain, mainly before noon. Mostly cloudy, with a high near 36.

    High: 36 °F

    Chance Rain

Detailed Forecast

Today
Cloudy early, then gradual clearing, with a high near 44. Breezy, with a west wind 15 to 22 mph, with gusts as high as 39 mph.
Tonight
Increasing clouds, with a low around 29. Northwest wind 9 to 13 mph, with gusts as high as 23 mph.
Thanksgiving Day
Sunny, with a high near 43. Northwest wind 8 to 13 mph.
Thursday Night
Mostly clear, with a low around 23. Northwest wind around 6 mph becoming calm after midnight.
Friday
Sunny, with a high near 39. Light and variable wind.
Friday Night
Snow likely after 3am. Cloudy, with a low around 30. Chance of precipitation is 60%. New snow accumulation of around an inch possible.
Saturday
Snow before 9am, then rain, possibly mixed with snow. High near 38. Chance of precipitation is 90%.
Saturday Night
Rain likely, mainly before midnight. Cloudy, with a low around 29. Chance of precipitation is 70%.
Sunday
A 30 percent chance of rain, mainly before noon. Mostly cloudy, with a high near 36.
Sunday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 19.
Monday
A 20 percent chance of snow. Mostly cloudy, with a high near 30.
Monday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 18.
Tuesday
A slight chance of rain and snow. Mostly sunny, with a high near 34. Chance of precipitation is 20%.
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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:
6:26 am CST Nov 26, 2025
Forecast Valid:
9am CST Nov 26, 2025-6pm CST Dec 2, 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