National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Tropical Storm Edouard to Impact the Northwest Gulf Coast; Heat Expands Eastward

Tropical Storm Edouard will bring tropical storm to hurricane conditions, heavy rainfall, flash and some river flooding, and storm surge to portions of Upper Texas and southwestern Louisiana coasts into Wednesday. Severe thunderstorms are possible in the Central Plains and Mid-Atlantic. Hot and humid conditions will expand from the Central Plains into the Ohio Valley and Mid-Atlantic. Read More >

Hazardous Weather Conditions

Current conditions at

St. Louis Lambert International Airport (KSTL)

Lat: 38.75°NLon: 90.37°WElev: 604ft.

Fair

90°F

32°C

Humidity 50%
Wind Speed W 13 mph
Barometer 30.07 in (1016.7 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Heat Index95°F (35°C)
Last update 1 Sep 10:51 am CDT
Extended Forecast for

2 Miles SW Earth City MO

Heat Advisory September 1, 11:22am until September 4, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory September 1, 11:22am until September 4, 08:00pm

    NOW until 8:00pm Fri

    Heat Advisory

  • Today

    High: 100 °F

    Hot

  • Tonight

    Tonight: Clear, with a low around 78. South wind 3 to 6 mph.

    Low: 78 °F

    Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 99. Heat index values as high as 104. Southwest wind 6 to 8 mph.

    High: 99 °F

    Hot

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 78. South wind 5 to 7 mph.

    Low: 78 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 100. Southwest wind 5 to 7 mph.

    High: 100 °F

    Hot

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 81.

    Low: 81 °F

    Mostly Clear

  • Friday

    Friday: Sunny and hot, with a high near 100.

    High: 100 °F

    Hot

  • Friday Night

    Friday Night: Mostly clear, with a low around 80.

    Low: 80 °F

    Mostly Clear

Detailed Forecast

Today
Sunny and hot, with a high near 100. Heat index values as high as 105. Southwest wind 5 to 8 mph.
Tonight
Clear, with a low around 78. South wind 3 to 6 mph.
Wednesday
Sunny and hot, with a high near 99. Heat index values as high as 104. Southwest wind 6 to 8 mph.
Wednesday Night
Mostly clear, with a low around 78. South wind 5 to 7 mph.
Thursday
Sunny and hot, with a high near 100. Southwest wind 5 to 7 mph.
Thursday Night
Mostly clear, with a low around 81.
Friday
Sunny and hot, with a high near 100.
Friday Night
Mostly clear, with a low around 80.
Saturday
Mostly sunny and hot, with a high near 100.
Saturday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 76.
Sunday
Mostly sunny and hot, with a high near 97.
Sunday Night
Partly cloudy, with a low around 74.
Labor Day
Mostly sunny, with a high near 94.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SW Earth City MO
 38.76°N 90.48°W (Elev. 430 ft)
Last Update:
10:26 am CDT Sep 1, 2026
Forecast Valid:
11am CDT Sep 1, 2026-6pm CDT Sep 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