Current conditions at

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

Lat: 38.66°NLon: 90.66°WElev: 463ft.

A Few Clouds

38°F

3°C

Humidity 93%
Wind Speed Calm
Barometer 30.04 in (1017.3 mb)
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Last update 19 Mar 6:54 am CDT
Extended Forecast for

Weldon Spring MO

  • Today

    Today: Mostly cloudy through mid morning, then gradual clearing, with a high near 76. Calm wind becoming southwest around 6 mph in the morning.

    High: 76 °F

    Becoming
    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 50. Light southwest wind.

    Low: 50 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 82. West wind 5 to 10 mph.

    High: 82 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 52. West wind around 5 mph becoming calm  in the evening.

    Low: 52 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 82. Calm wind becoming west around 5 mph in the afternoon.

    High: 82 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 59.

    Low: 59 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 85.

    High: 85 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 40.

    Low: 40 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 56.

    High: 56 °F

    Sunny

Detailed Forecast

Today
Mostly cloudy through mid morning, then gradual clearing, with a high near 76. Calm wind becoming southwest around 6 mph in the morning.
Tonight
Mostly clear, with a low around 50. Light southwest wind.
Friday
Sunny, with a high near 82. West wind 5 to 10 mph.
Friday Night
Partly cloudy, with a low around 52. West wind around 5 mph becoming calm in the evening.
Saturday
Sunny, with a high near 82. Calm wind becoming west around 5 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 59.
Sunday
Mostly sunny, with a high near 85.
Sunday Night
Partly cloudy, with a low around 40.
Monday
Sunny, with a high near 56.
Monday Night
Partly cloudy, with a low around 36.
Tuesday
Partly sunny, with a high near 60.
Tuesday Night
Mostly cloudy, with a low around 40.
Wednesday
Mostly sunny, with a high near 71.
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ABOUT THIS FORECAST

 
Point Forecast:
Weldon Spring MO
 38.72°N 90.65°W (Elev. 584 ft)
5:41 am CDT Mar 19, 2026
7am CDT Mar 19, 2026-6pm CDT Mar 25, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database