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.

Fair

55°F

13°C

Humidity 69%
Wind Speed Calm
Barometer 29.87 in (1010.4 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 21 Mar 5:51 am CDT
Extended Forecast for

Lambert-St. Louis International Airport MO

  • Today

    Today: Sunny, with a high near 90. Light and variable wind becoming southwest 5 to 8 mph in the morning.

    High: 90 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 66. Southwest wind 6 to 10 mph.

    Low: 66 °F

    Mostly Clear

  • Sunday

    Sunday: Increasing clouds, with a high near 89. Southwest wind 10 to 17 mph becoming northwest in the afternoon. Winds could gust as high as 28 mph.

    High: 89 °F

    Increasing
    Clouds

  • Sunday Night

    Sunday Night: A 20 percent chance of showers before 1am. Mostly cloudy, then gradually becoming mostly clear, with a low around 38. Breezy, with a north wind 13 to 22 mph, with gusts as high as 32 mph.

    Low: 38 °F

    Slight Chance
    Showers and
    Breezy

  • Monday

    Monday: Mostly sunny, with a high near 56. Northeast wind around 10 mph.

    High: 56 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 41.

    Low: 41 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 63.

    High: 63 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 45.

    Low: 45 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 71.

    High: 71 °F

    Slight Chance
    T-storms

Detailed Forecast

Today
Sunny, with a high near 90. Light and variable wind becoming southwest 5 to 8 mph in the morning.
Tonight
Mostly clear, with a low around 66. Southwest wind 6 to 10 mph.
Sunday
Increasing clouds, with a high near 89. Southwest wind 10 to 17 mph becoming northwest in the afternoon. Winds could gust as high as 28 mph.
Sunday Night
A 20 percent chance of showers before 1am. Mostly cloudy, then gradually becoming mostly clear, with a low around 38. Breezy, with a north wind 13 to 22 mph, with gusts as high as 32 mph.
Monday
Mostly sunny, with a high near 56. Northeast wind around 10 mph.
Monday Night
Mostly cloudy, with a low around 41.
Tuesday
Partly sunny, with a high near 63.
Tuesday Night
A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 45.
Wednesday
A 20 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 71.
Wednesday Night
A 20 percent chance of showers. Partly cloudy, with a low around 55.
Thursday
A 20 percent chance of showers. Mostly sunny, with a high near 80.
Thursday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 46.
Friday
A 30 percent chance of showers. Partly sunny, with a high near 58.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lambert-St. Louis International Airport MO
 38.76°N 90.37°W (Elev. 551 ft)
Last Update:
4:16 am CDT Mar 21, 2026
Forecast Valid:
6am CDT Mar 21, 2026-6pm CDT Mar 27, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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