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.

Mostly Cloudy

57°F

14°C

Humidity 49%
Wind Speed NW 7 mph
Barometer 30.03 in (1016.9 mb)
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Last update 29 Apr 7:51 pm CDT
Extended Forecast for

Lambert-St. Louis International Airport MO

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming clear, with a low around 43. Northwest wind 6 to 11 mph becoming light after midnight.

    Low: 43 °F

    Decreasing
    Clouds

  • Thursday

    Thursday: Increasing clouds, with a high near 67. Calm wind becoming west 5 to 7 mph in the afternoon.

    High: 67 °F

    Increasing
    Clouds

  • Thursday Night

    Thursday Night: A chance of showers before 10pm, then a chance of showers and thunderstorms between 10pm and 1am, then a slight chance of showers after 1am. Mostly cloudy, with a low around 46. West wind 6 to 8 mph becoming northwest after midnight. Chance of precipitation is 40%.

    Low: 46 °F

    Chance
    Showers

  • Friday

    Friday: Mostly sunny, with a high near 63. North wind 7 to 10 mph.

    High: 63 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 42. North wind 5 to 9 mph becoming light in the evening.

    Low: 42 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 62.

    High: 62 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 44.

    Low: 44 °F

    Mostly Clear

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 74.

    High: 74 °F

    Sunny then
    Slight Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 54. Chance of precipitation is 40%.

    Low: 54 °F

    Chance
    T-storms

Detailed Forecast

Tonight
Mostly cloudy, then gradually becoming clear, with a low around 43. Northwest wind 6 to 11 mph becoming light after midnight.
Thursday
Increasing clouds, with a high near 67. Calm wind becoming west 5 to 7 mph in the afternoon.
Thursday Night
A chance of showers before 10pm, then a chance of showers and thunderstorms between 10pm and 1am, then a slight chance of showers after 1am. Mostly cloudy, with a low around 46. West wind 6 to 8 mph becoming northwest after midnight. Chance of precipitation is 40%.
Friday
Mostly sunny, with a high near 63. North wind 7 to 10 mph.
Friday Night
Partly cloudy, with a low around 42. North wind 5 to 9 mph becoming light in the evening.
Saturday
Sunny, with a high near 62.
Saturday Night
Mostly clear, with a low around 44.
Sunday
A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 74.
Sunday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 54. Chance of precipitation is 40%.
Monday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 77.
Monday Night
A 20 percent chance of showers. Partly cloudy, with a low around 53.
Tuesday
A 30 percent chance of showers. Mostly sunny, with a high near 75.
Tuesday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 58.
Wednesday
Showers and thunderstorms likely. Partly sunny, with a high near 74. Chance of precipitation is 60%.
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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:
4:46 pm CDT Apr 29, 2026
Forecast Valid:
8pm CDT Apr 29, 2026-6pm CDT May 6, 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