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.

Light Rain

75°F

24°C

Humidity 94%
Wind Speed S 6 mph
Barometer 29.96 in (1013.5 mb)
Dewpoint 73°F (23°C)
Visibility 9.00 mi
Last update 15 Oct 12:51 pm CDT
Extended Forecast for

Cool Valley MO

  • This Afternoon

    This Afternoon: Showers and possibly a thunderstorm, mainly before 3pm, then a chance of showers and thunderstorms after 3pm. High near 80. Southwest wind around 10 mph. Chance of precipitation is 80%.

    High: 80 °F

    Showers

  • Tonight

    Tonight: Showers and thunderstorms likely before midnight, then a slight chance of showers between midnight and 4am. Increasing clouds, with a low around 49. Northwest wind 10 to 17 mph, with gusts as high as 24 mph. Chance of precipitation is 70%.

    Low: 49 °F

    Showers
    Likely then
    Slight Chance
    Showers

  • Friday

    Friday: A 20 percent chance of showers after 4pm. Partly sunny, with a high near 57. Northwest wind around 18 mph, with gusts as high as 30 mph.

    High: 57 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Friday Night

    Friday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 41. North wind 9 to 16 mph, with gusts as high as 25 mph.

    Low: 41 °F

    Decreasing
    Clouds

  • Saturday

    Saturday: Sunny, with a high near 60. North wind around 6 mph becoming calm in the afternoon.

    High: 60 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 40.

    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 44.

    Low: 44 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 72.

    High: 72 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Showers and possibly a thunderstorm, mainly before 3pm, then a chance of showers and thunderstorms after 3pm. High near 80. Southwest wind around 10 mph. Chance of precipitation is 80%.
Tonight
Showers and thunderstorms likely before midnight, then a slight chance of showers between midnight and 4am. Increasing clouds, with a low around 49. Northwest wind 10 to 17 mph, with gusts as high as 24 mph. Chance of precipitation is 70%.
Friday
A 20 percent chance of showers after 4pm. Partly sunny, with a high near 57. Northwest wind around 18 mph, with gusts as high as 30 mph.
Friday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 41. North wind 9 to 16 mph, with gusts as high as 25 mph.
Saturday
Sunny, with a high near 60. North wind around 6 mph becoming calm in the afternoon.
Saturday Night
Clear, with a low around 40.
Sunday
Sunny, with a high near 67.
Sunday Night
Mostly clear, with a low around 44.
Monday
Mostly sunny, with a high near 72.
Monday Night
Partly cloudy, with a low around 46.
Tuesday
Sunny, with a high near 74.
Tuesday Night
Mostly clear, with a low around 50.
Wednesday
Sunny, with a high near 78.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Cool Valley MO
 38.73°N 90.31°W (Elev. 584 ft)
Last Update:
11:21 am CDT Oct 15, 2026
Forecast Valid:
1pm CDT Oct 15, 2026-6pm CDT Oct 21, 2026
 
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