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.

Mostly Cloudy

77°F

25°C

Humidity 40%
Wind Speed SW 8 mph
Barometer 29.88 in (1011.0 mb)
Dewpoint 51°F (11°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 31 Mar 8:54 pm CDT
Extended Forecast for

Weldon Spring MO

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly between midnight and 1am, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 57. Southeast wind around 6 mph becoming light and variable after midnight. Chance of precipitation is 70%.

    Low: 57 °F

    T-storms
    Likely

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm before 4pm, then a chance of showers and thunderstorms after 4pm. Mostly cloudy, with a high near 74. Light and variable wind becoming southeast 5 to 8 mph in the morning. Chance of precipitation is 70%.

    High: 74 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers, mainly after 1am. Mostly cloudy, with a low around 65. South wind 8 to 14 mph, with gusts as high as 24 mph.

    Low: 65 °F

    Chance
    Showers

  • Thursday

    Thursday: Showers likely, then showers and possibly a thunderstorm after 10am. High near 78. Breezy, with a south wind 17 to 21 mph, with gusts as high as 34 mph. Chance of precipitation is 90%.

    High: 78 °F

    Breezy.
    Showers
    Likely then
    Showers

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm before 10pm, then showers likely between 10pm and 1am, then a chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 59. Southwest wind 6 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.

    Low: 59 °F

    Showers
    Likely

  • Friday

    Friday: A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 83. Chance of precipitation is 60%.

    High: 83 °F

    Showers
    Likely

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm. Low around 51. Chance of precipitation is 90%.

    Low: 51 °F

    Showers

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers. Mostly cloudy, with a high near 63. Chance of precipitation is 60%.

    High: 63 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: A 20 percent chance of showers before 1am. Partly cloudy, with a low around 37.

    Low: 37 °F

    Slight Chance
    Showers

Detailed Forecast

Tonight
Showers and thunderstorms likely, mainly between midnight and 1am, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 57. Southeast wind around 6 mph becoming light and variable after midnight. Chance of precipitation is 70%.
Wednesday
Showers likely and possibly a thunderstorm before 4pm, then a chance of showers and thunderstorms after 4pm. Mostly cloudy, with a high near 74. Light and variable wind becoming southeast 5 to 8 mph in the morning. Chance of precipitation is 70%.
Wednesday Night
A 30 percent chance of showers, mainly after 1am. Mostly cloudy, with a low around 65. South wind 8 to 14 mph, with gusts as high as 24 mph.
Thursday
Showers likely, then showers and possibly a thunderstorm after 10am. High near 78. Breezy, with a south wind 17 to 21 mph, with gusts as high as 34 mph. Chance of precipitation is 90%.
Thursday Night
Showers likely and possibly a thunderstorm before 10pm, then showers likely between 10pm and 1am, then a chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 59. Southwest wind 6 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.
Friday
A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 83. Chance of precipitation is 60%.
Friday Night
Showers and possibly a thunderstorm. Low around 51. Chance of precipitation is 90%.
Saturday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers. Mostly cloudy, with a high near 63. Chance of precipitation is 60%.
Saturday Night
A 20 percent chance of showers before 1am. Partly cloudy, with a low around 37.
Sunday
Mostly sunny, with a high near 55.
Sunday Night
Mostly clear, with a low around 34.
Monday
Sunny, with a high near 65.
Monday Night
Mostly clear, with a low around 42.
Tuesday
Sunny, with a high near 70.
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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:
8:16 pm CDT Mar 31, 2026
Forecast Valid:
9pm CDT Mar 31, 2026-6pm CDT Apr 7, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation