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

Hazardous Weather Conditions

Current conditions at

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

Lat: 38.66°NLon: 90.66°WElev: 463ft.

Overcast

72°F

22°C

Humidity 79%
Wind Speed S 8 mph
Barometer 29.84 in (1009.7 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Last update 15 Apr 4:54 pm CDT
Extended Forecast for

Weldon Spring MO

  • This Afternoon

    This Afternoon: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 73. South wind around 9 mph, with gusts as high as 22 mph.

    High: 73 °F

    Chance
    T-storms

  • Tonight

    Tonight: Showers and thunderstorms, mainly before 2am. Low around 61. Southwest wind 8 to 11 mph, with gusts as high as 24 mph. Chance of precipitation is 80%.

    Low: 61 °F

    T-storms

  • Thursday

    Thursday: Mostly cloudy, then gradually becoming sunny, with a high near 83. West wind 6 to 8 mph.

    High: 83 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 60. Light south wind.

    Low: 60 °F

    Mostly Clear

  • Friday

    Friday: A 50 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 86. South wind 6 to 14 mph, with gusts as high as 24 mph.

    High: 86 °F

    Mostly Sunny
    then Chance
    T-storms

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm. Low around 49. Chance of precipitation is 80%.

    Low: 49 °F

    Showers

  • Saturday

    Saturday: A 40 percent chance of showers, mainly before 1pm. Mostly sunny, with a high near 61.

    High: 61 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 39.

    Low: 39 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 65.

    High: 65 °F

    Sunny

Detailed Forecast

This Afternoon
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 73. South wind around 9 mph, with gusts as high as 22 mph.
Tonight
Showers and thunderstorms, mainly before 2am. Low around 61. Southwest wind 8 to 11 mph, with gusts as high as 24 mph. Chance of precipitation is 80%.
Thursday
Mostly cloudy, then gradually becoming sunny, with a high near 83. West wind 6 to 8 mph.
Thursday Night
Mostly clear, with a low around 60. Light south wind.
Friday
A 50 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 86. South wind 6 to 14 mph, with gusts as high as 24 mph.
Friday Night
Showers and possibly a thunderstorm. Low around 49. Chance of precipitation is 80%.
Saturday
A 40 percent chance of showers, mainly before 1pm. Mostly sunny, with a high near 61.
Saturday Night
Mostly clear, with a low around 39.
Sunday
Sunny, with a high near 65.
Sunday Night
Clear, with a low around 42.
Monday
Sunny, with a high near 74.
Monday Night
Mostly clear, with a low around 51.
Tuesday
Sunny, with a high near 77.
Tuesday Night
A 20 percent chance of showers. Partly cloudy, with a low around 55.
Wednesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 79.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Weldon Spring MO
 38.72°N 90.65°W (Elev. 584 ft)
Last Update:
4:36 pm CDT Apr 15, 2026
Forecast Valid:
5pm CDT Apr 15, 2026-6pm CDT Apr 22, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation