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 Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

A Few Clouds

92°F

33°C

Humidity 54%
Wind Speed Calm
Barometer 30.17 in (1021.0 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index101°F (38°C)
Last update 16 Sep 3:53 pm CDT
Extended Forecast for

Crestwood MO

Heat Advisory September 16, 04:31pm until September 19, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory September 16, 04:31pm until September 19, 08:00pm

    NOW until 8:00pm Sat

    Heat Advisory

  • This Afternoon

    High: 96 °F

    Scattered
    T-storms

  • Tonight

    Tonight: Scattered showers and thunderstorms, mainly before 8pm.  Mostly cloudy, then gradually becoming mostly clear, with a low around 76. Light and variable wind.  Chance of precipitation is 30%.

    Low: 76 °F

    Scattered
    T-storms then
    Mostly Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 98. Heat index values as high as 107. Southwest wind 3 to 5 mph.

    High: 98 °F

    Hot

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 75. Light and variable wind.

    Low: 75 °F

    Mostly Clear

  • 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 97.

    High: 97 °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

    Partly Cloudy
    then Chance
    Showers

Detailed Forecast

This Afternoon
Scattered showers and thunderstorms. Mostly sunny, with a high near 96. Heat index values as high as 102. Light southeast wind. Chance of precipitation is 30%.
Tonight
Scattered showers and thunderstorms, mainly before 8pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 76. Light and variable wind. Chance of precipitation is 30%.
Thursday
Sunny and hot, with a high near 98. Heat index values as high as 107. Southwest wind 3 to 5 mph.
Thursday Night
Mostly clear, with a low around 75. Light and variable 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 97.
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 slight chance of showers and thunderstorms. Partly cloudy, with a low around 69. Chance of precipitation is 20%.
Monday
A 30 percent chance of showers and thunderstorms. Partly sunny, 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. Mostly sunny, with a high near 82.
Tuesday Night
Partly cloudy, with a low around 63.
Wednesday
A 20 percent chance of showers. Mostly sunny, with a high near 82.
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ABOUT THIS FORECAST

 
Point Forecast:
Crestwood MO
 38.56°N 90.38°W (Elev. 597 ft)
2:36 pm CDT Sep 16, 2026
4pm CDT Sep 16, 2026-6pm CDT Sep 23, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database