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.

A Few Clouds

85°F

29°C

Humidity 70%
Wind Speed SW 9 mph
Barometer 30.05 in (1016.1 mb)
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index93°F (34°C)
Last update 1 Jul 8:51 am CDT
Extended Forecast for

3 Miles ESE Saint Louis MO

Extreme Heat Warning July 1, 09:18am until July 3, 10:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning July 1, 09:18am until July 3, 10:00pm

    NOW until 10:00pm Fri

    Extreme Heat Warning

  • Today

    High: 97 °F

    Hot

  • Tonight

    Tonight: Clear, with a low around 79. South wind 5 to 9 mph becoming light southwest after midnight.

    Low: 79 °F

    Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 98. Heat index values as high as 110. Southwest wind 3 to 6 mph.

    High: 98 °F

    Hot

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 78. South wind 5 to 7 mph becoming calm after midnight.

    Low: 78 °F

    Mostly Clear

  • Friday

    Friday: Sunny and hot, with a high near 97. Calm wind becoming south 5 to 7 mph in the morning.

    High: 97 °F

    Hot

  • Friday Night

    Friday Night: A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 77.

    Low: 77 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Independence Day

    Independence Day: A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 96.

    High: 96 °F

    Mostly Sunny
    then Chance
    T-storms

  • Saturday Night

    Saturday Night: A 40 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 76.

    Low: 76 °F

    Chance
    T-storms

Detailed Forecast

Today
Sunny and hot, with a high near 97. Heat index values as high as 107. South wind 5 to 8 mph.
Tonight
Clear, with a low around 79. South wind 5 to 9 mph becoming light southwest after midnight.
Thursday
Sunny and hot, with a high near 98. Heat index values as high as 110. Southwest wind 3 to 6 mph.
Thursday Night
Mostly clear, with a low around 78. South wind 5 to 7 mph becoming calm after midnight.
Friday
Sunny and hot, with a high near 97. Calm wind becoming south 5 to 7 mph in the morning.
Friday Night
A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 77.
Independence Day
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 96.
Saturday Night
A 40 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 76.
Sunday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 94.
Sunday Night
A 30 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 75.
Monday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92.
Monday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 74.
Tuesday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ESE Saint Louis MO
 38.62°N 90.2°W (Elev. 446 ft)
Last Update:
8:36 am CDT Jul 1, 2026
Forecast Valid:
9am CDT Jul 1, 2026-6pm CDT Jul 7, 2026
 
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