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

82°F

28°C

Humidity 53%
Wind Speed Vrbl 6 mph
Barometer 30.00 in (1015.0 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 20 Jun 11:54 am CDT
Extended Forecast for

Wentzville MO

Flood Watch June 21, 07:00am until June 22, 01:00am
Click here for hazard details and duration
Flood Watch

  • This Afternoon

    This Afternoon: Sunny, with a high near 84. Calm wind.

    High: 84 °F

    Sunny

  • Tonight

    Tonight: Isolated showers and thunderstorms after 4am. Increasing clouds, with a low around 67. Calm wind becoming southeast around 5 mph after midnight. Chance of precipitation is 20%.

    Low: 67 °F

    Mostly Clear
    then Isolated
    T-storms

  • Sunday

    Sunday: Showers and thunderstorms. High near 83. Southeast wind 6 to 13 mph becoming southwest in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 90%.

    High: 83 °F

    T-storms

  • Sunday Night

    Sunday Night: Showers and thunderstorms before 3am, then isolated showers between 3am and 5am. Low around 63. West wind 7 to 10 mph becoming southwest in the evening. Winds could gust as high as 20 mph. Chance of precipitation is 90%.

    Low: 63 °F

    T-storms then
    Scattered
    Showers

  • Monday

    Monday: A slight chance of showers and thunderstorms between 7am and 1pm. Partly sunny, with a high near 77. North wind 7 to 9 mph. Chance of precipitation is 20%.

    High: 77 °F

    Slight Chance
    T-storms

  • Monday Night

    Monday Night: Partly cloudy, with a low around 59.

    Low: 59 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 61.

    Low: 61 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 83.

    High: 83 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 84. Calm wind.
Tonight
Isolated showers and thunderstorms after 4am. Increasing clouds, with a low around 67. Calm wind becoming southeast around 5 mph after midnight. Chance of precipitation is 20%.
Sunday
Showers and thunderstorms. High near 83. Southeast wind 6 to 13 mph becoming southwest in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 90%.
Sunday Night
Showers and thunderstorms before 3am, then isolated showers between 3am and 5am. Low around 63. West wind 7 to 10 mph becoming southwest in the evening. Winds could gust as high as 20 mph. Chance of precipitation is 90%.
Monday
A slight chance of showers and thunderstorms between 7am and 1pm. Partly sunny, with a high near 77. North wind 7 to 9 mph. Chance of precipitation is 20%.
Monday Night
Partly cloudy, with a low around 59.
Tuesday
Mostly sunny, with a high near 81.
Tuesday Night
Mostly clear, with a low around 61.
Wednesday
Mostly sunny, with a high near 83.
Wednesday Night
Partly cloudy, with a low around 61.
Thursday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 82.
Thursday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 61.
Friday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 82.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Wentzville MO
 38.81°N 90.85°W (Elev. 633 ft)
Last Update:
11:26 am CDT Jun 20, 2026
Forecast Valid:
12pm CDT Jun 20, 2026-6pm CDT Jun 26, 2026
 
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