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.

Mostly Cloudy

73°F

23°C

Humidity 55%
Wind Speed Vrbl 5 mph
Barometer 30.21 in (1022.1 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 15 Oct 9:51 am CDT
Extended Forecast for

Cool Valley MO

  • Today

    Today: Sunny, with a high near 85. Calm wind becoming northeast around 5 mph in the afternoon.

    High: 85 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 62. East wind around 6 mph.

    Low: 62 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 82. Southeast wind 6 to 9 mph.

    High: 82 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 61. Southeast wind around 9 mph, with gusts as high as 20 mph.

    Low: 61 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 83. South wind 7 to 10 mph.

    High: 83 °F

    Partly Sunny

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 66.

    Low: 66 °F

    Mostly Clear
    then Chance
    T-storms

  • Saturday

    Saturday: Showers and possibly a thunderstorm. High near 76. Chance of precipitation is 80%.

    High: 76 °F

    Showers

  • Saturday Night

    Saturday Night: Showers likely, mainly before 1am. Partly cloudy, with a low around 52. Chance of precipitation is 60%.

    Low: 52 °F

    Showers
    Likely

  • Sunday

    Sunday: A 20 percent chance of showers before 1pm. Sunny, with a high near 68.

    High: 68 °F

    Slight Chance
    Showers

Detailed Forecast

Today
Sunny, with a high near 85. Calm wind becoming northeast around 5 mph in the afternoon.
Tonight
Mostly clear, with a low around 62. East wind around 6 mph.
Thursday
Sunny, with a high near 82. Southeast wind 6 to 9 mph.
Thursday Night
Partly cloudy, with a low around 61. Southeast wind around 9 mph, with gusts as high as 20 mph.
Friday
Partly sunny, with a high near 83. South wind 7 to 10 mph.
Friday Night
A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 66.
Saturday
Showers and possibly a thunderstorm. High near 76. Chance of precipitation is 80%.
Saturday Night
Showers likely, mainly before 1am. Partly cloudy, with a low around 52. Chance of precipitation is 60%.
Sunday
A 20 percent chance of showers before 1pm. Sunny, with a high near 68.
Sunday Night
Clear, with a low around 48.
Monday
Sunny, with a high near 76.
Monday Night
A 20 percent chance of showers. Mostly clear, with a low around 55.
Tuesday
A 20 percent chance of showers. Sunny, with a high near 76.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Cool Valley MO
 38.73°N 90.31°W (Elev. 584 ft)
Last Update:
8:31 am CDT Oct 15, 2025
Forecast Valid:
10am CDT Oct 15, 2025-6pm CDT Oct 21, 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