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

84°F

29°C

Humidity 61%
Wind Speed S 10 G 30 mph
Barometer 29.91 in (1011.3 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Heat Index88°F (31°C)
Last update 13 Oct 9:51 pm CDT
Extended Forecast for

Brentwood MO

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly after 4am. Increasing clouds, with a low around 73. South wind 5 to 7 mph becoming west after midnight. Chance of precipitation is 60%.

    Low: 73 °F

    Clear then
    T-storms
    Likely

  • Wednesday

    Wednesday: Showers and thunderstorms before 11am, then showers likely and possibly a thunderstorm between 11am and 1pm, then a chance of showers and thunderstorms after 1pm. Patchy fog between 1pm and 2pm. High near 78. Calm wind becoming northwest around 5 mph in the afternoon. Chance of precipitation is 90%.

    High: 78 °F

    T-storms and
    Patchy Fog
    then Showers
    Likely and
    Patchy Fog

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 3am. Cloudy, with a low around 68. East wind around 6 mph. Chance of precipitation is 70%.

    Low: 68 °F

    Slight Chance
    T-storms then
    Showers
    Likely

  • Thursday

    Thursday: Showers and possibly a thunderstorm. High near 83. East wind 5 to 8 mph becoming southwest in the afternoon. Chance of precipitation is 90%.

    High: 83 °F

    Showers

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 1am, then a slight chance of showers. Mostly cloudy, with a low around 51. Northwest wind 8 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 40%.

    Low: 51 °F

    Chance
    T-storms then
    Chance
    Showers

  • Friday

    Friday: Mostly sunny, with a high near 61.

    High: 61 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 40.

    Low: 40 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 63.

    High: 63 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 40.

    Low: 40 °F

    Mostly Clear

Detailed Forecast

Tonight
Showers and thunderstorms likely, mainly after 4am. Increasing clouds, with a low around 73. South wind 5 to 7 mph becoming west after midnight. Chance of precipitation is 60%.
Wednesday
Showers and thunderstorms before 11am, then showers likely and possibly a thunderstorm between 11am and 1pm, then a chance of showers and thunderstorms after 1pm. Patchy fog between 1pm and 2pm. High near 78. Calm wind becoming northwest around 5 mph in the afternoon. Chance of precipitation is 90%.
Wednesday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 3am. Cloudy, with a low around 68. East wind around 6 mph. Chance of precipitation is 70%.
Thursday
Showers and possibly a thunderstorm. High near 83. East wind 5 to 8 mph becoming southwest in the afternoon. Chance of precipitation is 90%.
Thursday Night
A chance of showers and thunderstorms before 1am, then a slight chance of showers. Mostly cloudy, with a low around 51. Northwest wind 8 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 40%.
Friday
Mostly sunny, with a high near 61.
Friday Night
Mostly clear, with a low around 40.
Saturday
Sunny, with a high near 63.
Saturday Night
Mostly clear, with a low around 40.
Sunday
Sunny, with a high near 70.
Sunday Night
Partly cloudy, with a low around 48.
Monday
Mostly sunny, with a high near 74.
Monday Night
Partly cloudy, with a low around 52.
Tuesday
Mostly sunny, with a high near 79.
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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:
9:06 pm CDT Oct 13, 2026
Forecast Valid:
10pm CDT Oct 13, 2026-6pm CDT Oct 20, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation