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.

Fair

51°F

11°C

Humidity 64%
Wind Speed S 10 mph
Barometer 29.87 in (1011.0 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Wind Chill47°F (8°C)
Last update 9 Mar 3:51 am CDT
Extended Forecast for

Brentwood MO

  • Today

    Today: Sunny, with a high near 82. South wind 6 to 11 mph, with gusts as high as 22 mph.

    High: 82 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 60. South wind 6 to 9 mph.

    Low: 60 °F

    Mostly Clear

  • Tuesday

    Tuesday: A slight chance of rain and thunderstorms before 1pm, then a chance of rain between 1pm and 4pm, then a chance of rain and thunderstorms after 4pm. Increasing clouds, with a high near 83. South wind 6 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 40%.

    High: 83 °F

    Mostly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Rain and possibly a thunderstorm. Low around 55. South wind around 11 mph, with gusts as high as 23 mph. Chance of precipitation is 90%.

    Low: 55 °F

    Rain Likely
    then Rain

  • Wednesday

    Wednesday: Rain and possibly a thunderstorm. Temperature rising to near 65 by 10am, then falling to around 50 during the remainder of the day. Southwest wind 11 to 16 mph becoming northwest in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 100%.

    High: 65 °F⇓

    Rain

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 34.

    Low: 34 °F

    Mostly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 56.

    High: 56 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 45.

    Low: 45 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 65.

    High: 65 °F

    Partly Sunny

Detailed Forecast

Today
Sunny, with a high near 82. South wind 6 to 11 mph, with gusts as high as 22 mph.
Tonight
Mostly clear, with a low around 60. South wind 6 to 9 mph.
Tuesday
A slight chance of rain and thunderstorms before 1pm, then a chance of rain between 1pm and 4pm, then a chance of rain and thunderstorms after 4pm. Increasing clouds, with a high near 83. South wind 6 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 40%.
Tuesday Night
Rain and possibly a thunderstorm. Low around 55. South wind around 11 mph, with gusts as high as 23 mph. Chance of precipitation is 90%.
Wednesday
Rain and possibly a thunderstorm. Temperature rising to near 65 by 10am, then falling to around 50 during the remainder of the day. Southwest wind 11 to 16 mph becoming northwest in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 100%.
Wednesday Night
Mostly cloudy, with a low around 34.
Thursday
Sunny, with a high near 56.
Thursday Night
Mostly cloudy, with a low around 45.
Friday
Partly sunny, with a high near 65.
Friday Night
Partly cloudy, with a low around 40.
Saturday
Mostly sunny, with a high near 68.
Saturday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 50.
Sunday
A 50 percent chance of rain and thunderstorms. Mostly cloudy, with a high near 70.
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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:
1:26 am CDT Mar 9, 2026
Forecast Valid:
4am CDT Mar 9, 2026-6pm CDT Mar 15, 2026
 
Forecast Discussion
 
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Additional Resources

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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