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.

Overcast

79°F

26°C

Humidity 49%
Wind Speed S 8 mph
Barometer 29.73 in (1005.7 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 17 Apr 9:51 pm CDT
Extended Forecast for

Brentwood MO

Tornado Watch April 17, 10:18pm until April 17, 11:00pm
Click here for hazard details and duration
...
  •  
    Tornado Watch April 17, 10:18pm until April 17, 11:00pm

    NOW until 11:00pm Fri

    Tornado Watch

  • Tonight

    Low: 48 °F

    Severe
    Thunderstorms
    then Showers

  • Saturday

    Saturday: A 30 percent chance of showers, mainly before 8am. Cloudy through mid morning, then gradual clearing, with a high near 60. Northwest wind around 15 mph, with gusts as high as 24 mph.

    High: 60 °F

    Chance
    Showers then
    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 42. Northwest wind 5 to 10 mph becoming light and variable after midnight.

    Low: 42 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 69. Light southwest wind becoming west 5 to 10 mph in the morning. Winds could gust as high as 22 mph.

    High: 69 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 43. Northwest wind around 6 mph becoming calm in the evening.

    Low: 43 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 72.

    High: 72 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 53.

    Low: 53 °F

    Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 82.

    High: 82 °F

    Mostly Sunny

Detailed Forecast

Tonight
Showers and possibly a thunderstorm. Some of the storms could be severe. Low around 48. South wind 7 to 13 mph becoming west after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 100%.
Saturday
A 30 percent chance of showers, mainly before 8am. Cloudy through mid morning, then gradual clearing, with a high near 60. Northwest wind around 15 mph, with gusts as high as 24 mph.
Saturday Night
Mostly clear, with a low around 42. Northwest wind 5 to 10 mph becoming light and variable after midnight.
Sunday
Sunny, with a high near 69. Light southwest wind becoming west 5 to 10 mph in the morning. Winds could gust as high as 22 mph.
Sunday Night
Mostly clear, with a low around 43. Northwest wind around 6 mph becoming calm in the evening.
Monday
Sunny, with a high near 72.
Monday Night
Clear, with a low around 53.
Tuesday
Mostly sunny, with a high near 82.
Tuesday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 59.
Wednesday
Sunny, with a high near 83.
Wednesday Night
Mostly clear, with a low around 61.
Thursday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 86.
Thursday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 64.
Friday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 81.
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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:
10:11 pm CDT Apr 17, 2026
Forecast Valid:
10pm CDT Apr 17, 2026-6pm CDT Apr 24, 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