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

Hazardous Weather Conditions

Current conditions at

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

Lat: 38.66°NLon: 90.66°WElev: 463ft.

Fair

64°F

18°C

Humidity 96%
Wind Speed Calm
Barometer 30.00 in (1015.3 mb)
Dewpoint 63°F (17°C)
Visibility 8.00 mi
Last update 20 Jun 3:54 am CDT
Extended Forecast for

Wentzville MO

Extreme Heat Watch June 21, 12:00pm until June 24, 09:00pm
Click here for hazard details and duration
Extreme Heat Watch

  • Today

    Today: Sunny, with a high near 92. Heat index values as high as 100. Light south wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 20 mph.

    High: 92 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 76. South wind 8 to 10 mph, with gusts as high as 21 mph.

    Low: 76 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 95. Heat index values as high as 106. Southwest wind 11 to 14 mph, with gusts as high as 25 mph.

    High: 95 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 76. South wind 7 to 10 mph, with gusts as high as 21 mph.

    Low: 76 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 95. Southwest wind 7 to 10 mph, with gusts as high as 21 mph.

    High: 95 °F

    Sunny

  • Sunday Night

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

    Low: 75 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 95.

    High: 95 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 74.

    Low: 74 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of showers before 1pm. Mostly sunny, with a high near 94.

    High: 94 °F

    Slight Chance
    Showers

Detailed Forecast

Today
Sunny, with a high near 92. Heat index values as high as 100. Light south wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Tonight
Mostly clear, with a low around 76. South wind 8 to 10 mph, with gusts as high as 21 mph.
Saturday
Sunny, with a high near 95. Heat index values as high as 106. Southwest wind 11 to 14 mph, with gusts as high as 25 mph.
Saturday Night
Mostly clear, with a low around 76. South wind 7 to 10 mph, with gusts as high as 21 mph.
Sunday
Sunny, with a high near 95. Southwest wind 7 to 10 mph, with gusts as high as 21 mph.
Sunday Night
Mostly clear, with a low around 75.
Monday
Sunny, with a high near 95.
Monday Night
Partly cloudy, with a low around 74.
Tuesday
A 20 percent chance of showers before 1pm. Mostly sunny, with a high near 94.
Tuesday Night
Partly cloudy, with a low around 74.
Wednesday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 93.
Wednesday Night
Partly cloudy, with a low around 74.
Thursday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 92.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Wentzville MO
 38.81°N 90.85°W (Elev. 633 ft)
Last Update:
3:36 am CDT Jun 20, 2025
Forecast Valid:
4am CDT Jun 20, 2025-6pm CDT Jun 26, 2025
 
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