Current conditions at

St. Louis Lambert International Airport (KSTL)

Lat: 38.75°NLon: 90.37°WElev: 604ft.

Fair

62°F

17°C

Humidity 40%
Wind Speed SE 9 mph
Barometer 30.36 in (1028.2 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 18 Oct 5:51 pm CDT
Extended Forecast for

Clayton MO

  • Tonight

    Tonight: Clear, with a low around 43. Southeast wind around 6 mph becoming calm  in the evening.

    Low: 43 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 72. Light south wind.

    High: 72 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 45. Light and variable wind.

    Low: 45 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 74. Calm wind.

    High: 74 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 49. Calm wind.

    Low: 49 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 77.

    High: 77 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 50.

    Low: 50 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 77.

    High: 77 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 52.

    Low: 52 °F

    Clear

Detailed Forecast

Tonight
Clear, with a low around 43. Southeast wind around 6 mph becoming calm in the evening.
Monday
Sunny, with a high near 72. Light south wind.
Monday Night
Partly cloudy, with a low around 45. Light and variable wind.
Tuesday
Mostly sunny, with a high near 74. Calm wind.
Tuesday Night
Mostly clear, with a low around 49. Calm wind.
Wednesday
Sunny, with a high near 77.
Wednesday Night
Mostly clear, with a low around 50.
Thursday
Sunny, with a high near 77.
Thursday Night
Clear, with a low around 52.
Friday
Sunny, with a high near 77.
Friday Night
Mostly clear, with a low around 52.
Saturday
Mostly sunny, with a high near 78.
Saturday Night
Partly cloudy, with a low around 54.
Sunday
Mostly sunny, with a high near 80.
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ABOUT THIS FORECAST

 
Point Forecast:
Clayton MO
 38.64°N 90.32°W (Elev. 558 ft)
2:56 pm CDT Oct 18, 2026
6pm CDT Oct 18, 2026-6pm CDT Oct 25, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database