Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fair

49°F

9°C

Humidity 69%
Wind Speed NE 7 mph
Barometer 30.58 in (1035.5 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Wind Chill46°F (8°C)
Last update 17 Oct 9:53 am CDT
Extended Forecast for

2 Miles S Pontoon Beach IL

Frost Advisory October 18, 01:00am until October 18, 09:00am
Click here for hazard details and duration
Frost Advisory
  • Today

    Today: Sunny, with a high near 60. North wind around 5 mph becoming calm  in the afternoon.

    High: 60 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 37. Calm wind.

    Low: 37 °F

    Clear

  • Sunday

    Sunday: Areas of frost before 8am.  Otherwise, sunny, with a high near 67. Calm wind becoming south 5 to 7 mph in the morning.

    High: 67 °F

    Areas Frost
    then Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 38. Light and variable wind.

    Low: 38 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 72. Calm wind.

    High: 72 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 42.

    Low: 42 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 76.

    High: 76 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 44.

    Low: 44 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 79.

    High: 79 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 60. North wind around 5 mph becoming calm in the afternoon.
Tonight
Clear, with a low around 37. Calm wind.
Sunday
Areas of frost before 8am. Otherwise, sunny, with a high near 67. Calm wind becoming south 5 to 7 mph in the morning.
Sunday Night
Clear, with a low around 38. Light and variable wind.
Monday
Sunny, with a high near 72. Calm wind.
Monday Night
Partly cloudy, with a low around 42.
Tuesday
Sunny, with a high near 76.
Tuesday Night
Mostly clear, with a low around 44.
Wednesday
Sunny, with a high near 79.
Wednesday Night
Mostly clear, with a low around 47.
Thursday
Sunny, with a high near 83.
Thursday Night
Mostly clear, with a low around 51.
Friday
Sunny, with a high near 84.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles S Pontoon Beach IL
 38.7°N 90.06°W (Elev. 417 ft)
9:06 am CDT Oct 17, 2026
10am CDT Oct 17, 2026-6pm CDT Oct 23, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database