Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Fair

36°F

2°C

Humidity 60%
Wind Speed SW 13 mph
Barometer 29.89 in
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Wind Chill27°F (-3°C)
Last update 5 Dec 8:50 pm CST
Extended Forecast for

Pontoon Beach IL

  • Tonight

    Tonight: Cloudy, with a low around 28. Light and variable wind becoming southwest 5 to 7 mph in the evening.

    Low: 28 °F

    Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 39. Light and variable wind becoming southeast 5 to 7 mph in the afternoon.

    High: 39 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A 30 percent chance of rain, mainly after 1am.  Mostly cloudy, with a low around 31. Southeast wind 7 to 9 mph.

    Low: 31 °F

    Chance Rain

  • Sunday

    Sunday: A chance of rain before noon, then a slight chance of rain and snow between noon and 3pm, then a slight chance of snow after 3pm.  Mostly cloudy, with a high near 40. South wind 5 to 11 mph becoming north in the afternoon.  Chance of precipitation is 30%.

    High: 40 °F

    Chance Rain
    then Slight
    Chance
    Rain/Snow

  • Sunday Night

    Sunday Night: A 20 percent chance of snow before midnight.  Mostly cloudy, with a low around 17. North wind 6 to 10 mph.

    Low: 17 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 32.

    High: 32 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 23.

    Low: 23 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 48.

    High: 48 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 37.

    Low: 37 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Cloudy, with a low around 28. Light and variable wind becoming southwest 5 to 7 mph in the evening.
Saturday
Partly sunny, with a high near 39. Light and variable wind becoming southeast 5 to 7 mph in the afternoon.
Saturday Night
A 30 percent chance of rain, mainly after 1am. Mostly cloudy, with a low around 31. Southeast wind 7 to 9 mph.
Sunday
A chance of rain before noon, then a slight chance of rain and snow between noon and 3pm, then a slight chance of snow after 3pm. Mostly cloudy, with a high near 40. South wind 5 to 11 mph becoming north in the afternoon. Chance of precipitation is 30%.
Sunday Night
A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 17. North wind 6 to 10 mph.
Monday
Mostly sunny, with a high near 32.
Monday Night
Partly cloudy, with a low around 23.
Tuesday
Mostly sunny, with a high near 48.
Tuesday Night
Mostly cloudy, with a low around 37.
Wednesday
A 30 percent chance of rain, mainly after noon. Partly sunny, with a high near 47.
Wednesday Night
Mostly cloudy, with a low around 27.
Thursday
Mostly cloudy, with a high near 41.
Thursday Night
Mostly cloudy, with a low around 22.
Friday
Partly sunny, with a high near 32.
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ABOUT THIS FORECAST

 
Point Forecast:
Pontoon Beach IL
 38.73°N 90.06°W (Elev. 423 ft)
8:21 pm CST Dec 5, 2025
9pm CST Dec 5, 2025-6pm CST Dec 12, 2025
 
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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