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.

Fair

59°F

15°C

Humidity 31%
Wind Speed N 10 mph
Barometer 30.26 in (1024.8 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Last update 6 Apr 6:54 pm CDT
Extended Forecast for

Weldon Spring MO

  • Tonight

    Tonight: A slight chance of showers between 4am and 5am. Increasing clouds, with a low around 37. Northeast wind 6 to 10 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.

    Low: 37 °F

    Mostly Clear
    then Slight
    Chance
    Showers

  • Tuesday

    Tuesday: Cloudy through mid morning, then gradual clearing, with a high near 55. East wind 8 to 11 mph, with gusts as high as 20 mph.

    High: 55 °F

    Gradual
    Clearing

  • Tuesday Night

    Tuesday Night: Increasing clouds, with a low around 40. East wind around 9 mph, with gusts as high as 22 mph.

    Low: 40 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Partly sunny, with a high near 73. South wind 8 to 14 mph, with gusts as high as 23 mph.

    High: 73 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 53. South wind 8 to 10 mph.

    Low: 53 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 76.

    High: 76 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A 30 percent chance of showers, mainly after 1am. Mostly cloudy, with a low around 56.

    Low: 56 °F

    Chance
    Showers

  • Friday

    Friday: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 75.

    High: 75 °F

    Chance
    Showers then
    Chance
    T-storms

  • Friday Night

    Friday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 57.

    Low: 57 °F

    Chance
    T-storms

Detailed Forecast

Tonight
A slight chance of showers between 4am and 5am. Increasing clouds, with a low around 37. Northeast wind 6 to 10 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.
Tuesday
Cloudy through mid morning, then gradual clearing, with a high near 55. East wind 8 to 11 mph, with gusts as high as 20 mph.
Tuesday Night
Increasing clouds, with a low around 40. East wind around 9 mph, with gusts as high as 22 mph.
Wednesday
Partly sunny, with a high near 73. South wind 8 to 14 mph, with gusts as high as 23 mph.
Wednesday Night
Partly cloudy, with a low around 53. South wind 8 to 10 mph.
Thursday
Mostly sunny, with a high near 76.
Thursday Night
A 30 percent chance of showers, mainly after 1am. Mostly cloudy, with a low around 56.
Friday
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 75.
Friday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 57.
Saturday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 80. Chance of precipitation is 40%.
Saturday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 61.
Sunday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 83.
Sunday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 64.
Monday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 82. Chance of precipitation is 60%.
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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:
5:36 pm CDT Apr 6, 2026
Forecast Valid:
7pm CDT Apr 6, 2026-6pm CDT Apr 13, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation