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

Hazardous Weather Conditions

Current conditions at

St. Louis Lambert International Airport (KSTL)

Lat: 38.75°NLon: 90.37°WElev: 604ft.

A Few Clouds

77°F

25°C

Humidity 62%
Wind Speed NW 6 mph
Barometer 30.08 in (1017.5 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 4 Aug 10:51 am CDT
Extended Forecast for

Clayton MO

  • Today

    Today: Isolated showers and thunderstorms after 3pm. Partly sunny, with a high near 84. Northeast wind 3 to 7 mph. Chance of precipitation is 20%.

    High: 84 °F

    Isolated
    T-storms

  • Tonight

    Tonight: Isolated showers and thunderstorms before 8pm. Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 68. Northeast wind around 6 mph becoming calm in the evening. Chance of precipitation is 20%.

    Low: 68 °F

    Isolated
    T-storms then
    Patchy Fog

  • Tuesday

    Tuesday: Isolated showers and thunderstorms between 1pm and 4pm, then isolated showers after 4pm. Patchy fog before 8am. Otherwise, partly sunny, with a high near 86. Calm wind becoming northeast around 6 mph in the afternoon. Chance of precipitation is 20%.

    High: 86 °F

    Patchy Fog
    then Isolated
    T-storms

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 70. East wind around 5 mph becoming calm in the evening.

    Low: 70 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 89. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 89 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 71.

    Low: 71 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 91.

    High: 91 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 72.

    Low: 72 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 92.

    High: 92 °F

    Sunny

Detailed Forecast

Today
Isolated showers and thunderstorms after 3pm. Partly sunny, with a high near 84. Northeast wind 3 to 7 mph. Chance of precipitation is 20%.
Tonight
Isolated showers and thunderstorms before 8pm. Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 68. Northeast wind around 6 mph becoming calm in the evening. Chance of precipitation is 20%.
Tuesday
Isolated showers and thunderstorms between 1pm and 4pm, then isolated showers after 4pm. Patchy fog before 8am. Otherwise, partly sunny, with a high near 86. Calm wind becoming northeast around 6 mph in the afternoon. Chance of precipitation is 20%.
Tuesday Night
Mostly clear, with a low around 70. East wind around 5 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 89. Calm wind becoming southeast around 5 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 71.
Thursday
Sunny, with a high near 91.
Thursday Night
Mostly clear, with a low around 72.
Friday
Sunny, with a high near 92.
Friday Night
Mostly clear, with a low around 74.
Saturday
Sunny, with a high near 94.
Saturday Night
Partly cloudy, with a low around 75.
Sunday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 93.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Clayton MO
 38.64°N 90.32°W (Elev. 558 ft)
Last Update:
11:01 am CDT Aug 4, 2025
Forecast Valid:
11am CDT Aug 4, 2025-6pm CDT Aug 10, 2025
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation