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.

A Few Clouds

29°F

-2°C

Humidity 43%
Wind Speed NW 12 mph
Barometer 30.52 in (1034.9 mb)
Dewpoint 9°F (-13°C)
Visibility 10.00 mi
Wind Chill19°F (-7°C)
Last update 23 Feb 1:51 pm CST
Extended Forecast for

Brentwood MO

  • This Afternoon

    This Afternoon: Sunny, with a high near 32. Northwest wind 3 to 8 mph.

    High: 32 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 23. Calm wind becoming south 5 to 7 mph after midnight.

    Low: 23 °F

    Mostly Clear

  • Tuesday

    Tuesday: Increasing clouds, with a high near 56. South wind 8 to 15 mph, with gusts as high as 36 mph.

    High: 56 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 37. Southwest wind 5 to 9 mph becoming calm after midnight.

    Low: 37 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 54. Calm wind becoming north around 5 mph in the afternoon.

    High: 54 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Rain likely, mainly after midnight. Mostly cloudy, with a low around 38. Chance of precipitation is 60%.

    Low: 38 °F

    Chance Rain
    then Rain
    Likely

  • Thursday

    Thursday: A 30 percent chance of rain before noon. Partly sunny, with a high near 51.

    High: 51 °F

    Chance Rain
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 34.

    Low: 34 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 65.

    High: 65 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 32. Northwest wind 3 to 8 mph.
Tonight
Mostly clear, with a low around 23. Calm wind becoming south 5 to 7 mph after midnight.
Tuesday
Increasing clouds, with a high near 56. South wind 8 to 15 mph, with gusts as high as 36 mph.
Tuesday Night
Mostly cloudy, with a low around 37. Southwest wind 5 to 9 mph becoming calm after midnight.
Wednesday
Mostly sunny, with a high near 54. Calm wind becoming north around 5 mph in the afternoon.
Wednesday Night
Rain likely, mainly after midnight. Mostly cloudy, with a low around 38. Chance of precipitation is 60%.
Thursday
A 30 percent chance of rain before noon. Partly sunny, with a high near 51.
Thursday Night
Mostly clear, with a low around 34.
Friday
Sunny, with a high near 65.
Friday Night
Mostly clear, with a low around 42.
Saturday
Sunny, with a high near 68.
Saturday Night
Mostly cloudy, with a low around 34.
Sunday
A chance of rain and snow. Partly sunny, with a high near 49. Chance of precipitation is 30%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Brentwood MO
 38.62°N 90.35°W (Elev. 499 ft)
Last Update:
12:26 pm CST Feb 23, 2026
Forecast Valid:
2pm CST Feb 23, 2026-6pm CST Mar 1, 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