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

77°F

25°C

Humidity 85%
Wind Speed E 6 mph
Barometer 30.03 in (1015.8 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 15 Jul 12:51 am CDT
Extended Forecast for

Lambert-St. Louis International Airport MO

  • Overnight

    Overnight: Mostly cloudy, with a low around 73. Light southeast wind.

    Low: 73 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 50 percent chance of showers and thunderstorms, mainly after noon. Partly sunny, with a high near 87. South wind 3 to 6 mph.

    High: 87 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 74. South wind 3 to 5 mph.

    Low: 74 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 93. Southwest wind 6 to 9 mph.

    High: 93 °F

    Sunny then
    Slight Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 76. Southwest wind around 8 mph.

    Low: 76 °F

    Slight Chance
    T-storms

  • Thursday

    Thursday: A 40 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 91.

    High: 91 °F

    Chance
    T-storms

  • Thursday Night

    Thursday Night: A 40 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 74.

    Low: 74 °F

    Chance
    T-storms

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 89.

    High: 89 °F

    Chance
    T-storms

  • Friday Night

    Friday Night: A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 75.

    Low: 75 °F

    Slight Chance
    T-storms

Detailed Forecast

Overnight
Mostly cloudy, with a low around 73. Light southeast wind.
Tuesday
A 50 percent chance of showers and thunderstorms, mainly after noon. Partly sunny, with a high near 87. South wind 3 to 6 mph.
Tuesday Night
Partly cloudy, with a low around 74. South wind 3 to 5 mph.
Wednesday
A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 93. Southwest wind 6 to 9 mph.
Wednesday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 76. Southwest wind around 8 mph.
Thursday
A 40 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 91.
Thursday Night
A 40 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 74.
Friday
A 30 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 89.
Friday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 75.
Saturday
A 30 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 93.
Saturday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 76.
Sunday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 94.
Sunday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 76.
Monday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 94.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lambert-St. Louis International Airport MO
 38.76°N 90.37°W (Elev. 551 ft)
Last Update:
12:22 am CDT Jul 15, 2025
Forecast Valid:
1am CDT Jul 15, 2025-6pm CDT Jul 21, 2025
 
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Additional Resources

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