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.

Mostly Cloudy

70°F

21°C

Humidity 93%
Wind Speed E 10 mph
Barometer 29.83 in (1008.7 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 11 Jun 6:51 am CDT
Extended Forecast for

Saint Louis MO

  • Today

    Today: A 20 percent chance of showers before 9am. Mostly sunny, with a high near 96. Heat index values as high as 104. Southwest wind 8 to 16 mph, with gusts as high as 29 mph.

    High: 96 °F

    Slight Chance
    Showers then
    Mostly Sunny

  • Tonight

    Tonight: Showers and thunderstorms, mainly before midnight. Low around 66. Southwest wind 5 to 14 mph becoming northwest in the evening. Winds could gust as high as 24 mph. Chance of precipitation is 90%.

    Low: 66 °F

    T-storms then
    Slight Chance
    T-storms

  • Friday

    Friday: Sunny, with a high near 85. Northwest wind 3 to 5 mph.

    High: 85 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 66. Calm wind.

    Low: 66 °F

    Mostly Clear

  • Saturday

    Saturday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 86. South wind 5 to 9 mph.

    High: 86 °F

    Chance
    Showers then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm. Low around 69. Chance of precipitation is 90%.

    Low: 69 °F

    Showers

  • Sunday

    Sunday: A 30 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 79.

    High: 79 °F

    Chance
    Showers

  • Sunday Night

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

    Low: 60 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 80.

    High: 80 °F

    Mostly Sunny

Detailed Forecast

Today
A 20 percent chance of showers before 9am. Mostly sunny, with a high near 96. Heat index values as high as 104. Southwest wind 8 to 16 mph, with gusts as high as 29 mph.
Tonight
Showers and thunderstorms, mainly before midnight. Low around 66. Southwest wind 5 to 14 mph becoming northwest in the evening. Winds could gust as high as 24 mph. Chance of precipitation is 90%.
Friday
Sunny, with a high near 85. Northwest wind 3 to 5 mph.
Friday Night
Mostly clear, with a low around 66. Calm wind.
Saturday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 86. South wind 5 to 9 mph.
Saturday Night
Showers and possibly a thunderstorm. Low around 69. Chance of precipitation is 90%.
Sunday
A 30 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 79.
Sunday Night
Partly cloudy, with a low around 60.
Monday
Mostly sunny, with a high near 80.
Monday Night
Partly cloudy, with a low around 61.
Tuesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 83.
Tuesday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 63.
Wednesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 86.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Saint Louis MO
 38.64°N 90.23°W (Elev. 538 ft)
Last Update:
6:16 am CDT Jun 11, 2026
Forecast Valid:
7am CDT Jun 11, 2026-6pm CDT Jun 17, 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