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

70°F

21°C

Humidity 59%
Wind Speed S 13 mph
Barometer 30.07 in (1017.7 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 12 Apr 8:51 am CDT
Extended Forecast for

Brentwood MO

  • Today

    Today: A 30 percent chance of showers, mainly after 5pm. Increasing clouds, with a high near 83. South wind 6 to 16 mph, with gusts as high as 30 mph.

    High: 83 °F

    Mostly Sunny
    then Chance
    Showers

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly before 10pm. Mostly cloudy, with a low around 66. Southwest wind 9 to 15 mph, with gusts as high as 25 mph.

    Low: 66 °F

    Chance
    Showers then
    Slight Chance
    T-storms

  • Monday

    Monday: A 20 percent chance of showers before 1pm. Mostly sunny, with a high near 87. Southwest wind 9 to 15 mph, with gusts as high as 24 mph.

    High: 87 °F

    Slight Chance
    Showers

  • Monday Night

    Monday Night: Partly cloudy, with a low around 69. Southwest wind 9 to 14 mph, with gusts as high as 24 mph.

    Low: 69 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 89. Southwest wind 8 to 14 mph, with gusts as high as 24 mph.

    High: 89 °F

    Partly Sunny
    then Chance
    Showers

  • Tuesday Night

    Tuesday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 69.

    Low: 69 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm. High near 82. Chance of precipitation is 80%.

    High: 82 °F

    Showers

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 64. Chance of precipitation is 70%.

    Low: 64 °F

    Showers
    Likely

  • Thursday

    Thursday: A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 85. Chance of precipitation is 40%.

    High: 85 °F

    Chance
    Showers

Detailed Forecast

Today
A 30 percent chance of showers, mainly after 5pm. Increasing clouds, with a high near 83. South wind 6 to 16 mph, with gusts as high as 30 mph.
Tonight
A 30 percent chance of showers and thunderstorms, mainly before 10pm. Mostly cloudy, with a low around 66. Southwest wind 9 to 15 mph, with gusts as high as 25 mph.
Monday
A 20 percent chance of showers before 1pm. Mostly sunny, with a high near 87. Southwest wind 9 to 15 mph, with gusts as high as 24 mph.
Monday Night
Partly cloudy, with a low around 69. Southwest wind 9 to 14 mph, with gusts as high as 24 mph.
Tuesday
A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 89. Southwest wind 8 to 14 mph, with gusts as high as 24 mph.
Tuesday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 69.
Wednesday
Showers and possibly a thunderstorm. High near 82. Chance of precipitation is 80%.
Wednesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 64. Chance of precipitation is 70%.
Thursday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 85. Chance of precipitation is 40%.
Thursday Night
Mostly clear, with a low around 62.
Friday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89.
Friday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 64. Chance of precipitation is 60%.
Saturday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 81. Chance of precipitation is 60%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Brentwood MO
 38.62°N 90.35°W (Elev. 499 ft)
Last Update:
8:26 am CDT Apr 12, 2026
Forecast Valid:
8am CDT Apr 12, 2026-6pm CDT Apr 18, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation