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

St. Louis Lambert International Airport (KSTL)

Lat: 38.75°NLon: 90.37°WElev: 604ft.

Overcast and Breezy

69°F

21°C

Humidity 87%
Wind Speed NW 21 G 43 mph
Barometer 29.95 in (1013.4 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Last update 15 Oct 9:51 pm CDT
Extended Forecast for

Clayton MO

  • Tonight

    Tonight: Scattered showers, mainly before 2am. Mostly clear early, then becoming cloudy, with a low around 49. Northwest wind 14 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 40%.

    Low: 49 °F

    Scattered
    Showers

  • Friday

    Friday: Isolated showers after 4pm. Mostly cloudy, with a high near 55. Northwest wind around 17 mph, with gusts as high as 33 mph. Chance of precipitation is 20%.

    High: 55 °F

    Partly Sunny
    then Isolated
    Showers

  • Friday Night

    Friday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 41. North wind 8 to 15 mph, with gusts as high as 28 mph.

    Low: 41 °F

    Decreasing
    Clouds

  • Saturday

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

    High: 60 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 40. Calm wind.

    Low: 40 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 67.

    High: 67 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 43.

    Low: 43 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 71.

    High: 71 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 47.

    Low: 47 °F

    Partly Cloudy

Detailed Forecast

Tonight
Scattered showers, mainly before 2am. Mostly clear early, then becoming cloudy, with a low around 49. Northwest wind 14 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 40%.
Friday
Isolated showers after 4pm. Mostly cloudy, with a high near 55. Northwest wind around 17 mph, with gusts as high as 33 mph. Chance of precipitation is 20%.
Friday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 41. North wind 8 to 15 mph, with gusts as high as 28 mph.
Saturday
Sunny, with a high near 60. North wind around 5 mph becoming calm in the morning.
Saturday Night
Clear, with a low around 40. Calm wind.
Sunday
Sunny, with a high near 67.
Sunday Night
Mostly clear, with a low around 43.
Monday
Mostly sunny, with a high near 71.
Monday Night
Partly cloudy, with a low around 47.
Tuesday
Mostly sunny, with a high near 76.
Tuesday Night
Mostly clear, with a low around 50.
Wednesday
Sunny, with a high near 79.
Wednesday Night
Mostly clear, with a low around 52.
Thursday
Sunny, with a high near 81.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Clayton MO
 38.67°N 90.32°W (Elev. 499 ft)
Last Update:
8:56 pm CDT Oct 15, 2026
Forecast Valid:
10pm CDT Oct 15, 2026-6pm CDT Oct 22, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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