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

32°F

0°C

Humidity 82%
Wind Speed Calm
Barometer 29.91 in (1014.0 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Last update 5 Feb 7:54 pm CST
Extended Forecast for

Weldon Spring MO

  • Tonight

    Tonight: Mostly clear, with a low around 30. Light west wind becoming southwest 5 to 9 mph in the evening.

    Low: 30 °F

    Mostly Clear

  • Friday

    Friday: Increasing clouds, with a high near 48. Breezy, with a southwest wind 11 to 20 mph becoming northwest in the afternoon. Winds could gust as high as 33 mph.

    High: 48 °F

    Increasing
    Clouds and
    Breezy

  • Friday Night

    Friday Night: Partly cloudy, with a low around 23. North wind 5 to 14 mph, with gusts as high as 25 mph.

    Low: 23 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 37. North wind around 6 mph becoming southeast in the afternoon.

    High: 37 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 26. Southeast wind 6 to 8 mph.

    Low: 26 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 55.

    High: 55 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 30.

    Low: 30 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 59.

    High: 59 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 41.

    Low: 41 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 30. Light west wind becoming southwest 5 to 9 mph in the evening.
Friday
Increasing clouds, with a high near 48. Breezy, with a southwest wind 11 to 20 mph becoming northwest in the afternoon. Winds could gust as high as 33 mph.
Friday Night
Partly cloudy, with a low around 23. North wind 5 to 14 mph, with gusts as high as 25 mph.
Saturday
Sunny, with a high near 37. North wind around 6 mph becoming southeast in the afternoon.
Saturday Night
Mostly cloudy, with a low around 26. Southeast wind 6 to 8 mph.
Sunday
Mostly sunny, with a high near 55.
Sunday Night
Mostly clear, with a low around 30.
Monday
Sunny, with a high near 59.
Monday Night
Mostly clear, with a low around 41.
Tuesday
A 20 percent chance of rain after noon. Partly sunny, with a high near 66.
Tuesday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 43.
Wednesday
A 30 percent chance of rain. Mostly cloudy, with a high near 55.
Wednesday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 35.
Thursday
A 30 percent chance of rain. Mostly cloudy, with a high near 49.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Weldon Spring MO
 38.72°N 90.65°W (Elev. 584 ft)
Last Update:
7:41 pm CST Feb 5, 2026
Forecast Valid:
8pm CST Feb 5, 2026-6pm CST Feb 12, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation