Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Mostly Cloudy

82°F

28°C

Humidity 74%
Wind Speed S 9 G 21 mph
Barometer 29.78 in (1007.9 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index87°F (31°C)
Last update 18 Jun 9:53 am CDT
Extended Forecast for

Pontoon Beach IL

Tornado Watch until June 18, 04:00pm
Click here for hazard details and duration
Tornado Watch
  •  
    Tornado Watch until June 18, 04:00pm

    NOW until 4:00pm Wed

    Tornado Watch

  • Today

    High: 85 °F

    Severe
    Thunderstorms

  • Tonight

    Tonight: A chance of showers and thunderstorms before midnight, then a slight chance of showers between midnight and 1am.  Mostly cloudy, with a low around 68. Southwest wind 7 to 10 mph.  Chance of precipitation is 50%.

    Low: 68 °F

    Chance
    T-storms then
    Slight Chance
    Showers

  • Juneteenth

    Juneteenth: Sunny, with a high near 86. Northwest wind around 8 mph.

    High: 86 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 68. Light and variable wind.

    Low: 68 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 92. Calm wind becoming south 5 to 9 mph in the morning.

    High: 92 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 75.

    Low: 75 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 96.

    High: 96 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 77.

    Low: 77 °F

    Mostly Clear

Detailed Forecast

Today
Showers and thunderstorms likely, mainly before 3pm. Some of the storms could be severe. Mostly cloudy, with a high near 85. Southwest wind 14 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 60%.
Tonight
A chance of showers and thunderstorms before midnight, then a slight chance of showers between midnight and 1am. Mostly cloudy, with a low around 68. Southwest wind 7 to 10 mph. Chance of precipitation is 50%.
Juneteenth
Sunny, with a high near 86. Northwest wind around 8 mph.
Thursday Night
Mostly clear, with a low around 68. Light and variable wind.
Friday
Sunny, with a high near 92. Calm wind becoming south 5 to 9 mph in the morning.
Friday Night
Mostly clear, with a low around 75.
Saturday
Sunny, with a high near 96.
Saturday Night
Mostly clear, with a low around 77.
Sunday
Sunny and hot, with a high near 97.
Sunday Night
Mostly clear, with a low around 77.
Monday
Sunny, with a high near 95.
Monday Night
Mostly clear, with a low around 76.
Tuesday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 94.
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ABOUT THIS FORECAST

 
Point Forecast:
Pontoon Beach IL
 38.73°N 90.09°W (Elev. 417 ft)
9:52 am CDT Jun 18, 2025
10am CDT Jun 18, 2025-6pm CDT Jun 24, 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