Showers and Storms in the East; Dangerously Hot and Dry in the West

Scattered showers and storms are expected across portions of the Central and Eastern U.S. through the end of the week. Meanwhile, dangerous heat will intensify across the Desert Southwest and Intermountain West. Hot, dry weather and increasing winds will allow elevated wildfire conditions to return to the northern Intermountain West, where air quality issues persist from ongoing fires. Read More >

Current conditions at

St. Louis, Spirit Of St. Louis Airport (KSUS)

Lat: 38.66°NLon: 90.66°WElev: 463ft.

Fair

80°F

27°C

Humidity 79%
Wind Speed S 7 mph
Barometer 30.02 in (1015.5 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 8 Aug 10:54 pm CDT
Extended Forecast for

Ellisville MO

Extreme Heat Watch August 9, 12:00pm until August 12, 08:00pm
Click here for hazard details and duration
Extreme Heat Watch
  • Tonight

    Tonight: Clear, with a low around 72. Light south wind.

    Low: 72 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 94. Heat index values as high as 102. Light south wind increasing to 5 to 10 mph in the morning.

    High: 94 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 76. South wind 6 to 9 mph.

    Low: 76 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 96. Heat index values as high as 107. Southwest wind 5 to 7 mph.

    High: 96 °F

    Mostly Sunny

  • Monday Night

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

    Low: 78 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 95.

    High: 95 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 77.

    Low: 77 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms, mainly after 1pm.  Mostly sunny, with a high near 93.

    High: 93 °F

    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 40 percent chance of showers and thunderstorms.  Partly cloudy, with a low around 73.

    Low: 73 °F

    Chance
    T-storms

Detailed Forecast

Tonight
Clear, with a low around 72. Light south wind.
Sunday
Sunny, with a high near 94. Heat index values as high as 102. Light south wind increasing to 5 to 10 mph in the morning.
Sunday Night
Mostly clear, with a low around 76. South wind 6 to 9 mph.
Monday
Mostly sunny, with a high near 96. Heat index values as high as 107. Southwest wind 5 to 7 mph.
Monday Night
Mostly clear, with a low around 78. South wind 5 to 7 mph.
Tuesday
Sunny, with a high near 95.
Tuesday Night
Partly cloudy, with a low around 77.
Wednesday
A 30 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 93.
Wednesday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 73.
Thursday
Showers and thunderstorms likely, mainly before 1pm. Partly sunny, with a high near 86. Chance of precipitation is 60%.
Thursday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 71. Chance of precipitation is 60%.
Friday
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 85.
Friday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 70.
Saturday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 83.
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ABOUT THIS FORECAST

 
Point Forecast:
Ellisville MO
 38.58°N 90.57°W (Elev. 696 ft)
9:41 pm CDT Aug 8, 2026
10pm CDT Aug 8, 2026-6pm CDT Aug 15, 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