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

84°F

29°C

Humidity 70%
Wind Speed E 7 mph
Barometer 30.02 in (1015.4 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index90°F (32°C)
Last update 15 Jul 10:51 am CDT
Extended Forecast for

Saint Louis MO

  • Today

    Today: A 40 percent chance of showers and thunderstorms, mainly after 2pm. Partly sunny, with a high near 89. South wind around 7 mph.

    High: 89 °F

    Chance
    T-storms

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 8pm. Mostly cloudy, with a low around 74. Southwest wind 3 to 5 mph.

    Low: 74 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 96. Heat index values as high as 103. Calm wind becoming southwest around 6 mph in the morning.

    High: 96 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 76. Southwest wind around 6 mph.

    Low: 76 °F

    Slight Chance
    T-storms

  • Thursday

    Thursday: A 50 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 91. West wind 5 to 7 mph.

    High: 91 °F

    Partly Sunny
    then Chance
    T-storms

  • Thursday Night

    Thursday Night: A 40 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 72.

    Low: 72 °F

    Chance
    T-storms

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 87.

    High: 87 °F

    Mostly Cloudy
    then Chance
    T-storms

  • Friday Night

    Friday Night: A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 74.

    Low: 74 °F

    Slight Chance
    T-storms

  • Saturday

    Saturday: A 40 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 93.

    High: 93 °F

    Chance
    T-storms

Detailed Forecast

Today
A 40 percent chance of showers and thunderstorms, mainly after 2pm. Partly sunny, with a high near 89. South wind around 7 mph.
Tonight
A 20 percent chance of showers and thunderstorms before 8pm. Mostly cloudy, with a low around 74. Southwest wind 3 to 5 mph.
Wednesday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 96. Heat index values as high as 103. Calm wind becoming southwest around 6 mph in the morning.
Wednesday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 76. Southwest wind around 6 mph.
Thursday
A 50 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 91. West wind 5 to 7 mph.
Thursday Night
A 40 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 72.
Friday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 87.
Friday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 74.
Saturday
A 40 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 20 percent chance of showers and thunderstorms. Partly 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 95.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Saint Louis MO
 38.64°N 90.23°W (Elev. 538 ft)
Last Update:
9:37 am CDT Jul 15, 2025
Forecast Valid:
11am CDT Jul 15, 2025-6pm CDT Jul 21, 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