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

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

Lat: 38.66°NLon: 90.66°WElev: 463ft.

Fair

71°F

22°C

Humidity 96%
Wind Speed W 6 mph
Barometer 29.65 in (1003.2 mb)
Dewpoint 70°F (21°C)
Visibility 8.00 mi
Last update 18 Jun 2:54 am CDT
Extended Forecast for

Wentzville MO

  • Overnight

    Overnight: Partly cloudy, with a low around 67. West wind around 6 mph.

    Low: 67 °F

    Partly Cloudy

  • Thursday

    Thursday: A 30 percent chance of showers, mainly between 11am and 2pm. Increasing clouds, with a high near 76. Northwest wind 3 to 7 mph.

    High: 76 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: Patchy fog after 5am. Otherwise, partly cloudy, with a low around 58. Light north wind.

    Low: 58 °F

    Partly Cloudy
    then Patchy
    Fog

  • Juneteenth

    Juneteenth: Patchy fog before 7am. Otherwise, mostly sunny, with a high near 84. Calm wind.

    High: 84 °F

    Patchy Fog
    then Mostly
    Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 64. Calm wind.

    Low: 64 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 85.

    High: 85 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 40 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 66.

    Low: 66 °F

    Partly Cloudy
    then Chance
    T-storms

  • Sunday

    Sunday: Showers and possibly a thunderstorm. High near 82. Chance of precipitation is 90%.

    High: 82 °F

    Showers

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm before 1am, then a chance of showers. Low around 61. Chance of precipitation is 80%.

    Low: 61 °F

    Showers

Detailed Forecast

Overnight
Partly cloudy, with a low around 67. West wind around 6 mph.
Thursday
A 30 percent chance of showers, mainly between 11am and 2pm. Increasing clouds, with a high near 76. Northwest wind 3 to 7 mph.
Thursday Night
Patchy fog after 5am. Otherwise, partly cloudy, with a low around 58. Light north wind.
Juneteenth
Patchy fog before 7am. Otherwise, mostly sunny, with a high near 84. Calm wind.
Friday Night
Mostly cloudy, with a low around 64. Calm wind.
Saturday
Mostly sunny, with a high near 85.
Saturday Night
A 40 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 66.
Sunday
Showers and possibly a thunderstorm. High near 82. Chance of precipitation is 90%.
Sunday Night
Showers and possibly a thunderstorm before 1am, then a chance of showers. Low around 61. Chance of precipitation is 80%.
Monday
Partly sunny, with a high near 77.
Monday Night
Partly cloudy, with a low around 59.
Tuesday
Mostly sunny, with a high near 81.
Tuesday Night
Partly cloudy, with a low around 61.
Wednesday
Mostly sunny, with a high near 83.
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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:
1:26 am CDT Jun 18, 2026
Forecast Valid:
3am CDT Jun 18, 2026-6pm CDT Jun 24, 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