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

73°F

23°C

Humidity 57%
Wind Speed N 6 mph
Barometer 30.11 in (1018.8 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 1 Sep 7:51 pm CDT
Extended Forecast for

Lambert-St. Louis International Airport MO

  • Tonight

    Tonight: Mostly cloudy, with a low around 63. Northeast wind 3 to 6 mph.

    Low: 63 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 80. North wind 3 to 6 mph.

    High: 80 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 62. North wind around 5 mph becoming calm in the evening.

    Low: 62 °F

    Mostly Clear

  • Wednesday

    Wednesday: A 20 percent chance of showers after 1pm. Sunny, with a high near 84. Light southwest wind increasing to 5 to 10 mph in the morning.

    High: 84 °F

    Sunny then
    Slight Chance
    Showers

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 56. West wind around 10 mph becoming north after midnight. Chance of precipitation is 70%.

    Low: 56 °F

    Showers
    Likely

  • Thursday

    Thursday: Mostly sunny, with a high near 72.

    High: 72 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 58.

    Low: 58 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 78.

    High: 78 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A 20 percent chance of showers before 1am. Mostly clear, with a low around 53.

    Low: 53 °F

    Slight Chance
    Showers

Detailed Forecast

Tonight
Mostly cloudy, with a low around 63. Northeast wind 3 to 6 mph.
Tuesday
Mostly sunny, with a high near 80. North wind 3 to 6 mph.
Tuesday Night
Mostly clear, with a low around 62. North wind around 5 mph becoming calm in the evening.
Wednesday
A 20 percent chance of showers after 1pm. Sunny, with a high near 84. Light southwest wind increasing to 5 to 10 mph in the morning.
Wednesday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 56. West wind around 10 mph becoming north after midnight. Chance of precipitation is 70%.
Thursday
Mostly sunny, with a high near 72.
Thursday Night
Mostly clear, with a low around 58.
Friday
Mostly sunny, with a high near 78.
Friday Night
A 20 percent chance of showers before 1am. Mostly clear, with a low around 53.
Saturday
Sunny, with a high near 74.
Saturday Night
Mostly clear, with a low around 54.
Sunday
Sunny, with a high near 74.
Sunday Night
Mostly clear, with a low around 55.
Monday
Mostly sunny, with a high near 76.
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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:
6:26 pm CDT Sep 1, 2025
Forecast Valid:
8pm CDT Sep 1, 2025-6pm CDT Sep 8, 2025
 
Forecast Discussion
 
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Additional Resources

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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