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

54°F

12°C

Humidity 77%
Wind Speed Calm
Barometer 29.90 in (1011.8 mb)
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Last update 21 Mar 1:54 am CDT
Extended Forecast for

Weldon Spring Heights MO

  • Overnight

    Overnight: Mostly clear, with a low around 50. Calm wind.

    Low: 50 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 90. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 90 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 65. Light south wind becoming southwest 5 to 9 mph in the evening.

    Low: 65 °F

    Mostly Clear

  • Sunday

    Sunday: Increasing clouds, with a high near 88. Southwest wind 9 to 16 mph becoming northwest in the afternoon. Winds could gust as high as 28 mph.

    High: 88 °F

    Increasing
    Clouds

  • Sunday Night

    Sunday Night: A 20 percent chance of showers before 1am. Partly cloudy, with a low around 38. Breezy, with a north wind 10 to 20 mph, with gusts as high as 31 mph.

    Low: 38 °F

    Slight Chance
    Showers and
    Breezy

  • Monday

    Monday: Sunny, with a high near 57.

    High: 57 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 42.

    Low: 42 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 63.

    High: 63 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of rain after 1am. Mostly cloudy, with a low around 44.

    Low: 44 °F

    Partly Cloudy
    then Slight
    Chance Rain

Detailed Forecast

Overnight
Mostly clear, with a low around 50. Calm wind.
Saturday
Sunny, with a high near 90. Calm wind becoming southwest around 6 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 65. Light south wind becoming southwest 5 to 9 mph in the evening.
Sunday
Increasing clouds, with a high near 88. Southwest wind 9 to 16 mph becoming northwest in the afternoon. Winds could gust as high as 28 mph.
Sunday Night
A 20 percent chance of showers before 1am. Partly cloudy, with a low around 38. Breezy, with a north wind 10 to 20 mph, with gusts as high as 31 mph.
Monday
Sunny, with a high near 57.
Monday Night
Partly cloudy, with a low around 42.
Tuesday
Partly sunny, with a high near 63.
Tuesday Night
A 20 percent chance of rain after 1am. Mostly cloudy, with a low around 44.
Wednesday
A 20 percent chance of rain and thunderstorms before 1pm. Partly sunny, with a high near 73.
Wednesday Night
A 20 percent chance of rain. Partly cloudy, with a low around 56.
Thursday
A 20 percent chance of rain. Sunny, with a high near 82.
Thursday Night
A 40 percent chance of rain and thunderstorms. Partly cloudy, with a low around 45.
Friday
A 30 percent chance of rain. Partly sunny, with a high near 58.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Weldon Spring Heights MO
 38.7°N 90.68°W (Elev. 591 ft)
Last Update:
1:26 am CDT Mar 21, 2026
Forecast Valid:
2am CDT Mar 21, 2026-6pm CDT Mar 27, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation