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

82°F

28°C

Humidity 72%
Wind Speed E 7 mph
Barometer 30.26 in (1023.3 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index87°F (31°C)
Last update 16 Sep 10:51 am CDT
Extended Forecast for

Webster Groves MO

Heat Advisory September 16, 11:17am until September 18, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory September 16, 11:17am until September 18, 08:00pm

    NOW until 8:00pm Fri

    Heat Advisory

  • Today

    High: 95 °F

    Chance
    T-storms

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly before 7pm.  Mostly cloudy, then gradually becoming mostly clear, with a low around 77. Light south wind.

    Low: 77 °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 west around 5 mph.

    High: 98 °F

    Hot

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 75. Calm wind.

    Low: 75 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 96. Light and variable wind.

    High: 96 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 75.

    Low: 75 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny and hot, with a high near 98.

    High: 98 °F

    Hot

  • Saturday Night

    Saturday Night: A 30 percent chance of showers and thunderstorms after 1am.  Partly cloudy, with a low around 74.

    Low: 74 °F

    Mostly Cloudy
    then Chance
    Showers

Detailed Forecast

Today
A 40 percent chance of showers and thunderstorms, mainly after 4pm. Partly sunny, with a high near 95. Heat index values as high as 105. Light and variable wind becoming west around 5 mph.
Tonight
A 30 percent chance of showers and thunderstorms, mainly before 7pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 77. Light south wind.
Thursday
Sunny and hot, with a high near 98. Heat index values as high as 107. Light and variable wind becoming west around 5 mph.
Thursday Night
Partly cloudy, with a low around 75. Calm wind.
Friday
Mostly sunny, with a high near 96. Light and variable wind.
Friday Night
Mostly clear, with a low around 75.
Saturday
Mostly sunny and hot, with a high near 98.
Saturday Night
A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 74.
Sunday
A slight chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 93. Chance of precipitation is 20%.
Sunday Night
A 30 percent chance of showers after 1am. Partly cloudy, with a low around 70.
Monday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 86.
Monday Night
A 30 percent chance of showers. Partly cloudy, with a low around 66.
Tuesday
A 20 percent chance of showers. Mostly sunny, with a high near 83.
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ABOUT THIS FORECAST

 
Point Forecast:
Webster Groves MO
 38.6°N 90.35°W (Elev. 482 ft)
8:51 am CDT Sep 16, 2026
11am 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