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

34°F

1°C

Humidity 81%
Wind Speed N 13 mph
Barometer 30.21 in
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Wind Chill25°F (-4°C)
Last update 7 Dec 4:45 pm CST
Extended Forecast for

Pontoon Beach IL

  • This Afternoon

    This Afternoon: A slight chance of drizzle. Cloudy, with a steady temperature around 33. North wind around 11 mph, with gusts as high as 20 mph.

    High: 33 °F

    Slight Chance
    Drizzle

  • Tonight

    Tonight: Cloudy, then gradual clearing toward daybreak, with a low around 22. North wind 7 to 14 mph, with gusts as high as 23 mph.

    Low: 22 °F

    Clearing Late

  • Monday

    Monday: Mostly sunny, with a high near 34. North wind 5 to 7 mph becoming light and variable in the afternoon.

    High: 34 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 26. Light southeast wind becoming south 5 to 10 mph in the evening.

    Low: 26 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 52. Southwest wind 9 to 11 mph, with gusts as high as 20 mph.

    High: 52 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 40.

    Low: 40 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 47.

    High: 47 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 26.

    Low: 26 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Thursday

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

    High: 36 °F

    Chance Snow

Detailed Forecast

This Afternoon
A slight chance of drizzle. Cloudy, with a steady temperature around 33. North wind around 11 mph, with gusts as high as 20 mph.
Tonight
Cloudy, then gradual clearing toward daybreak, with a low around 22. North wind 7 to 14 mph, with gusts as high as 23 mph.
Monday
Mostly sunny, with a high near 34. North wind 5 to 7 mph becoming light and variable in the afternoon.
Monday Night
Partly cloudy, with a low around 26. Light southeast wind becoming south 5 to 10 mph in the evening.
Tuesday
Mostly sunny, with a high near 52. Southwest wind 9 to 11 mph, with gusts as high as 20 mph.
Tuesday Night
Mostly cloudy, with a low around 40.
Wednesday
Partly sunny, with a high near 47.
Wednesday Night
A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 26.
Thursday
A 30 percent chance of snow, mainly before noon. Mostly cloudy, with a high near 36.
Thursday Night
Mostly cloudy, with a low around 18.
Friday
Partly sunny, with a high near 27.
Friday Night
Mostly cloudy, with a low around 6.
Saturday
Partly sunny and cold, with a high near 20.
Saturday Night
Mostly cloudy, with a low around 8.
Sunday
Mostly sunny, with a high near 26.
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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:
4:46 pm CST Dec 7, 2025
Forecast Valid:
5pm CST Dec 7, 2025-6pm CST Dec 14, 2025
 
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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