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.

Mostly Cloudy

61°F

16°C

Humidity 87%
Wind Speed E 7 mph
Barometer 30.06 in (1018.0 mb)
Dewpoint 57°F (14°C)
Visibility 8.00 mi
Last update 24 Dec 3:51 pm CST
Extended Forecast for

Cool Valley MO

  • Tonight

    Tonight: Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 54. South wind 5 to 7 mph becoming light and variable after midnight.

    Low: 54 °F

    Partly Cloudy
    then Patchy
    Fog

  • Christmas Day

    Christmas Day: Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 66. Calm wind becoming northeast around 5 mph in the afternoon.

    High: 66 °F

    Patchy Fog
    then Mostly
    Cloudy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 57. East wind around 6 mph becoming southwest after midnight.

    Low: 57 °F

    Mostly Cloudy

  • Friday

    Friday: Sunny, with a high near 70. Southwest wind 5 to 10 mph becoming northwest in the afternoon.

    High: 70 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 47. Light and variable wind.

    Low: 47 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 67.

    High: 67 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 55.

    Low: 55 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of rain and thunderstorms, then rain likely after noon. Cloudy, with a high near 60. Chance of precipitation is 60%.

    High: 60 °F

    Rain Likely

  • Sunday Night

    Sunday Night: A 20 percent chance of rain before midnight. Mostly cloudy, with a low around 21.

    Low: 21 °F

    Slight Chance
    Rain then
    Mostly Cloudy

Detailed Forecast

Tonight
Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 54. South wind 5 to 7 mph becoming light and variable after midnight.
Christmas Day
Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 66. Calm wind becoming northeast around 5 mph in the afternoon.
Thursday Night
Mostly cloudy, with a low around 57. East wind around 6 mph becoming southwest after midnight.
Friday
Sunny, with a high near 70. Southwest wind 5 to 10 mph becoming northwest in the afternoon.
Friday Night
Partly cloudy, with a low around 47. Light and variable wind.
Saturday
Partly sunny, with a high near 67.
Saturday Night
Mostly cloudy, with a low around 55.
Sunday
A chance of rain and thunderstorms, then rain likely after noon. Cloudy, with a high near 60. Chance of precipitation is 60%.
Sunday Night
A 20 percent chance of rain before midnight. Mostly cloudy, with a low around 21.
Monday
Mostly sunny, with a high near 30.
Monday Night
Mostly clear, with a low around 20.
Tuesday
Mostly sunny, with a high near 35.
Tuesday Night
Mostly clear, with a low around 25.
Wednesday
Mostly sunny, with a high near 41.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Cool Valley MO
 38.73°N 90.28°W (Elev. 499 ft)
Last Update:
3:16 pm CST Dec 24, 2025
Forecast Valid:
4pm CST Dec 24, 2025-6pm CST Dec 31, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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