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

Hazardous Weather Conditions

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fair

65°F

18°C

Humidity 37%
Wind Speed SE 14 mph
Barometer 29.84 in (1010.5 mb)
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Last update 14 Mar 5:53 pm CDT
Extended Forecast for

Pontoon Beach IL

Wind Advisory March 15, 10:00am until March 16, 12:00pm
Click here for hazard details and duration
Wind Advisory

  • Tonight

    Tonight: Increasing clouds, with a low around 55. South wind 10 to 15 mph, with gusts as high as 26 mph.

    Low: 55 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Rain and thunderstorms likely before 3pm, then rain and possibly a thunderstorm between 3pm and 4pm, then rain after 4pm. High near 67. Breezy, with a south wind 18 to 25 mph, with gusts as high as 40 mph. Chance of precipitation is 90%.

    High: 67 °F

    Breezy.
    Slight Chance
    T-storms then
    Rain

  • Sunday Night

    Sunday Night: Rain before 10pm, then a chance of snow. Low around 21. Breezy, with a west wind 26 to 29 mph, with gusts as high as 46 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    Low: 21 °F

    Breezy.
    Rain/Snow
    then Chance
    Snow

  • Monday

    Monday: Mostly cloudy, with a high near 29. Blustery, with a northwest wind 22 to 29 mph, with gusts as high as 43 mph.

    High: 29 °F

    Mostly Cloudy
    and Blustery

  • Monday Night

    Monday Night: Partly cloudy, with a low around 14. Northwest wind 9 to 18 mph, with gusts as high as 28 mph.

    Low: 14 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 37.

    High: 37 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A chance of rain and snow after 1am. Mostly cloudy, with a low around 32. Chance of precipitation is 30%.

    Low: 32 °F

    Mostly Cloudy
    then Chance
    Rain/Snow

  • Wednesday

    Wednesday: Mostly sunny, with a high near 65.

    High: 65 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 41.

    Low: 41 °F

    Mostly Clear

Detailed Forecast

Tonight
Increasing clouds, with a low around 55. South wind 10 to 15 mph, with gusts as high as 26 mph.
Sunday
Rain and thunderstorms likely before 3pm, then rain and possibly a thunderstorm between 3pm and 4pm, then rain after 4pm. High near 67. Breezy, with a south wind 18 to 25 mph, with gusts as high as 40 mph. Chance of precipitation is 90%.
Sunday Night
Rain before 10pm, then a chance of snow. Low around 21. Breezy, with a west wind 26 to 29 mph, with gusts as high as 46 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Monday
Mostly cloudy, with a high near 29. Blustery, with a northwest wind 22 to 29 mph, with gusts as high as 43 mph.
Monday Night
Partly cloudy, with a low around 14. Northwest wind 9 to 18 mph, with gusts as high as 28 mph.
Tuesday
Mostly sunny, with a high near 37.
Tuesday Night
A chance of rain and snow after 1am. Mostly cloudy, with a low around 32. Chance of precipitation is 30%.
Wednesday
Mostly sunny, with a high near 65.
Wednesday Night
Mostly clear, with a low around 41.
Thursday
Sunny, with a high near 73.
Thursday Night
Partly cloudy, with a low around 48.
Friday
Sunny, with a high near 74.
Friday Night
Partly cloudy, with a low around 49.
Saturday
Mostly sunny, with a high near 78.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Pontoon Beach IL
 38.73°N 90.09°W (Elev. 417 ft)
Last Update:
5:31 pm CDT Mar 14, 2026
Forecast Valid:
6pm CDT Mar 14, 2026-6pm CDT Mar 21, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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