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.

Fair

50°F

10°C

Humidity 62%
Wind Speed NA
Barometer 29.78 in
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 7 Nov 11:15 pm CST
Extended Forecast for

Pontoon Beach IL

  • Tonight

    Tonight: Increasing clouds, with a low around 41. West wind around 5 mph becoming calm after midnight.

    Low: 41 °F

    Increasing
    Clouds

  • Saturday

    Saturday: A 30 percent chance of rain, mainly after 5pm. Mostly cloudy, with a high near 67. Calm wind becoming southeast 5 to 7 mph in the afternoon.

    High: 67 °F

    Mostly Cloudy
    then Chance
    Rain

  • Saturday Night

    Saturday Night: A chance of rain before 4am, then a chance of sprinkles and flurries between 4am and 5am, then a chance of flurries after 5am. Mostly cloudy, with a low around 36. East wind 7 to 17 mph becoming northwest in the evening. Winds could gust as high as 26 mph. Chance of precipitation is 40%.

    Low: 36 °F

    Chance Rain
    then Chance
    Sprinkles/Flurries

  • Sunday

    Sunday: A chance of sprinkles and flurries before 5pm, then a chance of flurries. Mostly cloudy, then gradually becoming sunny, with a high near 41. Breezy, with a northwest wind 16 to 21 mph, with gusts as high as 29 mph.

    High: 41 °F

    Chance
    Sprinkles/Flurries
    and Breezy

  • Sunday Night

    Sunday Night: A chance of flurries before midnight. Mostly clear, with a low around 26. Northwest wind 9 to 14 mph, with gusts as high as 22 mph.

    Low: 26 °F

    Chance
    Flurries

  • Monday

    Monday: Sunny, with a high near 43.

    High: 43 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 27.

    Low: 27 °F

    Mostly Clear

  • Veterans Day

    Veterans Day: Partly sunny, with a high near 57.

    High: 57 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 43.

    Low: 43 °F

    Mostly Clear

Detailed Forecast

Tonight
Increasing clouds, with a low around 41. West wind around 5 mph becoming calm after midnight.
Saturday
A 30 percent chance of rain, mainly after 5pm. Mostly cloudy, with a high near 67. Calm wind becoming southeast 5 to 7 mph in the afternoon.
Saturday Night
A chance of rain before 4am, then a chance of sprinkles and flurries between 4am and 5am, then a chance of flurries after 5am. Mostly cloudy, with a low around 36. East wind 7 to 17 mph becoming northwest in the evening. Winds could gust as high as 26 mph. Chance of precipitation is 40%.
Sunday
A chance of sprinkles and flurries before 5pm, then a chance of flurries. Mostly cloudy, then gradually becoming sunny, with a high near 41. Breezy, with a northwest wind 16 to 21 mph, with gusts as high as 29 mph.
Sunday Night
A chance of flurries before midnight. Mostly clear, with a low around 26. Northwest wind 9 to 14 mph, with gusts as high as 22 mph.
Monday
Sunny, with a high near 43.
Monday Night
Mostly clear, with a low around 27.
Veterans Day
Partly sunny, with a high near 57.
Tuesday Night
Mostly clear, with a low around 43.
Wednesday
Sunny, with a high near 65.
Wednesday Night
Mostly clear, with a low around 38.
Thursday
Mostly sunny, with a high near 62.
Thursday Night
Partly cloudy, with a low around 42.
Friday
Mostly sunny, with a high near 66.
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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:
10:31 pm CST Nov 7, 2025
Forecast Valid:
11pm CST Nov 7, 2025-6pm CST Nov 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