Heavy to Excessive Rains in The Four Corners Region and Midwest; Heat Persists in the South-Central U.S.

Repeated rounds of showers and thunderstorms could bring a flash flooding threat across the Four Corners region and from the mid-Mississippi Valley into the lower Great Lakes. Hot temperatures and high humidity will continue to challenge daily records from the Southern Plains to the lower Mississippi Valley. Read More >

Current conditions at

St. Louis Lambert International Airport (KSTL)

Lat: 38.75°NLon: 90.37°WElev: 604ft.

Mostly Cloudy

88°F

31°C

Humidity 61%
Wind Speed Calm
Barometer 30.25 in (1022.9 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index96°F (36°C)
Last update 16 Sep 12:51 pm CDT
Extended Forecast for

2 Miles W Earth City MO

Heat Advisory September 16, 01:38pm until September 19, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory September 16, 01:38pm until September 19, 08:00pm

    NOW until 8:00pm Sat

    Heat Advisory

  • This Afternoon

    High: 94 °F

    Chance
    T-storms

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly before 7pm.  Partly cloudy, with a low around 76. Light south wind.

    Low: 76 °F

    Chance
    T-storms then
    Mostly Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 98. Heat index values as high as 107. Light and variable wind becoming southwest around 6 mph.

    High: 98 °F

    Hot

  • Thursday Night

    Thursday Night: Increasing clouds, with a low around 75. Light and variable wind.

    Low: 75 °F

    Increasing
    Clouds

  • Friday

    Friday: Mostly sunny, with a high near 96. Light and variable wind becoming east around 5 mph.

    High: 96 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 76.

    Low: 76 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny and hot, with a high near 97.

    High: 97 °F

    Hot

  • Saturday Night

    Saturday Night: A 40 percent chance of showers and thunderstorms after 1am.  Partly cloudy, with a low around 74.

    Low: 74 °F

    Partly Cloudy
    then Chance
    Showers

Detailed Forecast

This Afternoon
A 30 percent chance of showers and thunderstorms, mainly after 5pm. Mostly sunny, with a high near 94. Heat index values as high as 105. Light and variable wind.
Tonight
A 30 percent chance of showers and thunderstorms, mainly before 7pm. Partly cloudy, with a low around 76. Light south wind.
Thursday
Sunny and hot, with a high near 98. Heat index values as high as 107. Light and variable wind becoming southwest around 6 mph.
Thursday Night
Increasing clouds, with a low around 75. Light and variable wind.
Friday
Mostly sunny, with a high near 96. Light and variable wind becoming east around 5 mph.
Friday Night
Mostly clear, with a low around 76.
Saturday
Mostly sunny and hot, with a high near 97.
Saturday Night
A 40 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 74.
Sunday
A chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 92. Chance of precipitation is 30%.
Sunday Night
A slight chance of showers and thunderstorms, then a chance of showers after 1am. Partly cloudy, with a low around 69. Chance of precipitation is 30%.
Monday
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 87.
Monday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 65.
Tuesday
A 20 percent chance of showers. Partly sunny, with a high near 82.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles W Earth City MO
 38.78°N 90.48°W (Elev. 440 ft)
1:31 pm CDT Sep 16, 2026
1pm CDT Sep 16, 2026-6pm CDT Sep 22, 2026
 
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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