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

82°F

28°C

Humidity 82%
Wind Speed SW 5 mph
Barometer 30.05 in (1016.1 mb)
Dewpoint 76°F (24°C)
Visibility 10.00 mi
Heat Index89°F (32°C)
Last update 30 Jul 6:51 am CDT
Extended Forecast for

Saint Louis MO

Extreme Heat Warning July 30, 07:10am until July 30, 07:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning July 30, 07:10am until July 30, 07:00pm

    NOW until 7:00pm Wed

    Extreme Heat Warning

  • Today

    High: 96 °F

    Patchy Fog
    then Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 4am. Some of the storms could produce heavy rainfall. Mostly cloudy, with a low around 73. East wind around 5 mph becoming light and variable in the evening. Chance of precipitation is 60%.

    Low: 73 °F

    Heavy Rain
    then Showers
    Likely

  • Thursday

    Thursday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 82. Light north wind increasing to 5 to 10 mph in the morning. Chance of precipitation is 60%.

    High: 82 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Mostly cloudy, with a low around 66. North wind 7 to 10 mph. Chance of precipitation is 20%.

    Low: 66 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Friday

    Friday: Mostly sunny, with a high near 80. Northeast wind 7 to 11 mph.

    High: 80 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 61.

    Low: 61 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 61.

    Low: 61 °F

    Mostly Clear

Detailed Forecast

Today
A 30 percent chance of showers and thunderstorms, mainly after 3pm. Patchy fog before 8am. Otherwise, mostly sunny, with a high near 96. Heat index values as high as 106. Calm wind becoming southeast around 5 mph in the afternoon.
Tonight
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 4am. Some of the storms could produce heavy rainfall. Mostly cloudy, with a low around 73. East wind around 5 mph becoming light and variable in the evening. Chance of precipitation is 60%.
Thursday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 82. Light north wind increasing to 5 to 10 mph in the morning. Chance of precipitation is 60%.
Thursday Night
A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Mostly cloudy, with a low around 66. North wind 7 to 10 mph. Chance of precipitation is 20%.
Friday
Mostly sunny, with a high near 80. Northeast wind 7 to 11 mph.
Friday Night
Mostly clear, with a low around 61.
Saturday
Sunny, with a high near 81.
Saturday Night
Mostly clear, with a low around 61.
Sunday
Sunny, with a high near 84.
Sunday Night
Partly cloudy, with a low around 66.
Monday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 85.
Monday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 68.
Tuesday
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:
Saint Louis MO
 38.64°N 90.23°W (Elev. 538 ft)
Last Update:
5:41 am CDT Jul 30, 2025
Forecast Valid:
7am CDT Jul 30, 2025-6pm CDT Aug 5, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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