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

85°F

29°C

Humidity 59%
Wind Speed NE 10 mph
Barometer 29.99 in (1014.5 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Heat Index89°F (32°C)
Last update 6 Jul 5:51 pm CDT
Extended Forecast for

Lambert-St. Louis International Airport MO

  • Tonight

    Tonight: A chance of sprinkles before 7pm, then a slight chance of showers between 7pm and 8pm. Partly cloudy, with a low around 70. North wind 5 to 9 mph becoming light northeast. Chance of precipitation is 20%.

    Low: 70 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 86. Northeast wind 5 to 8 mph.

    High: 86 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 70. Northeast wind 5 to 8 mph becoming calm in the evening.

    Low: 70 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 89. Calm wind.

    High: 89 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 73. Southeast wind 5 to 7 mph.

    Low: 73 °F

    Mostly Clear

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 93.

    High: 93 °F

    Sunny then
    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Partly cloudy, with a low around 75. Chance of precipitation is 70%.

    Low: 75 °F

    Chance
    T-storms then
    Showers
    Likely

  • Friday

    Friday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 89.

    High: 89 °F

    Chance
    T-storms

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 74. Chance of precipitation is 60%.

    Low: 74 °F

    Showers
    Likely

Detailed Forecast

Tonight
A chance of sprinkles before 7pm, then a slight chance of showers between 7pm and 8pm. Partly cloudy, with a low around 70. North wind 5 to 9 mph becoming light northeast. Chance of precipitation is 20%.
Tuesday
Partly sunny, with a high near 86. Northeast wind 5 to 8 mph.
Tuesday Night
Mostly clear, with a low around 70. Northeast wind 5 to 8 mph becoming calm in the evening.
Wednesday
Mostly sunny, with a high near 89. Calm wind.
Wednesday Night
Mostly clear, with a low around 73. Southeast wind 5 to 7 mph.
Thursday
A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 93.
Thursday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Partly cloudy, with a low around 75. Chance of precipitation is 70%.
Friday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 89.
Friday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 74. Chance of precipitation is 60%.
Saturday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 88.
Saturday Night
A 40 percent chance of showers. Partly cloudy, with a low around 73.
Sunday
A 20 percent chance of showers. Mostly sunny, with a high near 90.
Sunday Night
Mostly clear, with a low around 73.
Monday
Sunny, with a high near 91.
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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:
6:26 pm CDT Jul 6, 2026
Forecast Valid:
6pm CDT Jul 6, 2026-6pm CDT Jul 13, 2026
 
Forecast Discussion
 
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Additional Resources

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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