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.

Partly Cloudy

40°F

4°C

Humidity 43%
Wind Speed W 9 mph
Barometer 30.23 in (1024.4 mb)
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Wind Chill34°F (1°C)
Last update 21 Feb 4:54 pm CST
Extended Forecast for

Wentzville MO

  • Tonight

    Tonight: Mostly clear, with a low around 21. Northwest wind 8 to 15 mph, with gusts as high as 26 mph.

    Low: 21 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 31. Blustery, with a northwest wind 15 to 20 mph, with gusts as high as 33 mph.

    High: 31 °F

    Mostly Sunny
    and Blustery

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 14. Northwest wind 14 to 16 mph, with gusts as high as 28 mph.

    Low: 14 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 33. Northwest wind 9 to 14 mph becoming light in the afternoon. Winds could gust as high as 24 mph.

    High: 33 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 19. Calm wind becoming south around 5 mph after midnight.

    Low: 19 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 56.

    High: 56 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 41.

    Low: 41 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 58.

    High: 58 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A 30 percent chance of rain, mainly after midnight. Mostly cloudy, with a low around 34.

    Low: 34 °F

    Chance Rain

Detailed Forecast

Tonight
Mostly clear, with a low around 21. Northwest wind 8 to 15 mph, with gusts as high as 26 mph.
Sunday
Mostly sunny, with a high near 31. Blustery, with a northwest wind 15 to 20 mph, with gusts as high as 33 mph.
Sunday Night
Mostly clear, with a low around 14. Northwest wind 14 to 16 mph, with gusts as high as 28 mph.
Monday
Sunny, with a high near 33. Northwest wind 9 to 14 mph becoming light in the afternoon. Winds could gust as high as 24 mph.
Monday Night
Partly cloudy, with a low around 19. Calm wind becoming south around 5 mph after midnight.
Tuesday
Partly sunny, with a high near 56.
Tuesday Night
Mostly cloudy, with a low around 41.
Wednesday
Partly sunny, with a high near 58.
Wednesday Night
A 30 percent chance of rain, mainly after midnight. Mostly cloudy, with a low around 34.
Thursday
A 30 percent chance of rain, mainly before noon. Mostly sunny, with a high near 50.
Thursday Night
Mostly clear, with a low around 30.
Friday
Sunny, with a high near 62.
Friday Night
Mostly clear, with a low around 39.
Saturday
A 20 percent chance of rain. Mostly sunny, with a high near 61.
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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:
4:46 pm CST Feb 21, 2026
Forecast Valid:
5pm CST Feb 21, 2026-6pm CST Feb 28, 2026
 
Forecast Discussion
 
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Additional Resources

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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