National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Flooding Possible in the Southwest U.S.; Coastal Storm to Impact the East

Heavy to excessive rainfall is expected today into Wednesday over New Mexico into far west Texas. Flash flooding and debris flows in wildfire burn areas will be possible. A strong coastal storm will develop off the Mid-Atlantic coast Wednesday, intensifying toward southern New England this weekend. Significant coastal flooding, strong rip currents, and beach erosion from high surf expected. Read More >

Current conditions at

St. Louis Lambert International Airport (KSTL)

Lat: 38.75°NLon: 90.37°WElev: 604ft.

Mostly Cloudy

64°F

18°C

Humidity 75%
Wind Speed E 10 mph
Barometer 30.17 in (1021.1 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 22 Sep 8:51 am CDT
Extended Forecast for

Saint Louis MO

  • Today

    Today: Mostly cloudy, with a high near 75. Northeast wind around 8 mph.

    High: 75 °F

    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy, with a low around 58. North wind 5 to 8 mph.

    Low: 58 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 76. North wind 6 to 8 mph.

    High: 76 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 59. Northeast wind 3 to 7 mph.

    Low: 59 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 76. Northeast wind 3 to 5 mph.

    High: 76 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 60.

    Low: 60 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 78.

    High: 78 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 57.

    Low: 57 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 76.

    High: 76 °F

    Partly Sunny

Detailed Forecast

Today
Mostly cloudy, with a high near 75. Northeast wind around 8 mph.
Tonight
Mostly cloudy, with a low around 58. North wind 5 to 8 mph.
Wednesday
Partly sunny, with a high near 76. North wind 6 to 8 mph.
Wednesday Night
Partly cloudy, with a low around 59. Northeast wind 3 to 7 mph.
Thursday
Mostly sunny, with a high near 76. Northeast wind 3 to 5 mph.
Thursday Night
Partly cloudy, with a low around 60.
Friday
Mostly sunny, with a high near 78.
Friday Night
Mostly cloudy, with a low around 57.
Saturday
Partly sunny, with a high near 76.
Saturday Night
A 20 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 59.
Sunday
Partly sunny, with a high near 82.
Sunday Night
Partly cloudy, with a low around 62.
Monday
Mostly sunny, with a high near 87.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Saint Louis MO
 38.62°N 90.23°W (Elev. 489 ft)
Last Update:
6:51 am CDT Sep 22, 2026
Forecast Valid:
9am CDT Sep 22, 2026-6pm CDT Sep 28, 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