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

69°F

21°C

Humidity 93%
Wind Speed SE 13 mph
Barometer 29.90 in (1011.2 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Last update 12 Jul 2:51 am CDT
Extended Forecast for

Lambert-St. Louis International Airport MO

  • Overnight

    Overnight: A 40 percent chance of showers and thunderstorms, mainly before 3am. Mostly cloudy, with a low around 75. South wind around 8 mph.

    Low: 75 °F

    Chance
    T-storms

  • Saturday

    Saturday: A 40 percent chance of showers and thunderstorms, mainly after noon. Partly sunny, with a high near 88. Southwest wind 8 to 11 mph becoming west in the afternoon. Winds could gust as high as 20 mph.

    High: 88 °F

    Chance
    T-storms

  • Saturday Night

    Saturday Night: A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 73. West wind 3 to 7 mph. Chance of precipitation is 20%.

    Low: 73 °F

    Slight Chance
    T-storms

  • Sunday

    Sunday: A slight chance of showers, then a chance of showers and thunderstorms after 7am. Partly sunny, with a high near 87. Light and variable wind becoming southeast around 5 mph in the afternoon. Chance of precipitation is 30%.

    High: 87 °F

    Chance
    T-storms

  • Sunday Night

    Sunday Night: A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Partly cloudy, with a low around 72. Northwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 20%.

    Low: 72 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Monday

    Monday: A slight chance of showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 90. Chance of precipitation is 20%.

    High: 90 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Monday Night

    Monday Night: A 20 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 74.

    Low: 74 °F

    Slight Chance
    T-storms

  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 90.

    High: 90 °F

    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 75.

    Low: 75 °F

    Chance
    T-storms

Detailed Forecast

Overnight
A 40 percent chance of showers and thunderstorms, mainly before 3am. Mostly cloudy, with a low around 75. South wind around 8 mph.
Saturday
A 40 percent chance of showers and thunderstorms, mainly after noon. Partly sunny, with a high near 88. Southwest wind 8 to 11 mph becoming west in the afternoon. Winds could gust as high as 20 mph.
Saturday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 73. West wind 3 to 7 mph. Chance of precipitation is 20%.
Sunday
A slight chance of showers, then a chance of showers and thunderstorms after 7am. Partly sunny, with a high near 87. Light and variable wind becoming southeast around 5 mph in the afternoon. Chance of precipitation is 30%.
Sunday Night
A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Partly cloudy, with a low around 72. Northwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 20%.
Monday
A slight chance of showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 90. Chance of precipitation is 20%.
Monday Night
A 20 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 74.
Tuesday
A 40 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 90.
Tuesday Night
A 30 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 75.
Wednesday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 92.
Wednesday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 74.
Thursday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 90.
Thursday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 73.
Friday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88.
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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:
1:21 am CDT Jul 12, 2025
Forecast Valid:
2am CDT Jul 12, 2025-6pm CDT Jul 18, 2025
 
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