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.

Overcast

74°F

23°C

Humidity 50%
Wind Speed SW 14 G 25 mph
Barometer 29.87 in (1010.7 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 12 Apr 7:54 pm CDT
Extended Forecast for

Weldon Spring MO

  • Tonight

    Tonight: A 30 percent chance of showers, mainly before 10pm. Mostly cloudy, with a low around 66. Southwest wind 10 to 15 mph, with gusts as high as 29 mph.

    Low: 66 °F

    Chance
    Showers

  • Monday

    Monday: Mostly sunny, with a high near 86. Southwest wind 9 to 15 mph, with gusts as high as 25 mph.

    High: 86 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 68. Southwest wind around 14 mph, with gusts as high as 23 mph.

    Low: 68 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 88. Southwest wind 11 to 15 mph, with gusts as high as 26 mph.

    High: 88 °F

    Partly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 68. Southwest wind 10 to 14 mph, with gusts as high as 23 mph.

    Low: 68 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm. High near 81. Chance of precipitation is 80%.

    High: 81 °F

    Showers

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 62. Chance of precipitation is 60%.

    Low: 62 °F

    Showers
    Likely

  • Thursday

    Thursday: Mostly sunny, with a high near 84.

    High: 84 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 62.

    Low: 62 °F

    Mostly Clear

Detailed Forecast

Tonight
A 30 percent chance of showers, mainly before 10pm. Mostly cloudy, with a low around 66. Southwest wind 10 to 15 mph, with gusts as high as 29 mph.
Monday
Mostly sunny, with a high near 86. Southwest wind 9 to 15 mph, with gusts as high as 25 mph.
Monday Night
Mostly cloudy, with a low around 68. Southwest wind around 14 mph, with gusts as high as 23 mph.
Tuesday
A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 88. Southwest wind 11 to 15 mph, with gusts as high as 26 mph.
Tuesday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 68. Southwest wind 10 to 14 mph, with gusts as high as 23 mph.
Wednesday
Showers and possibly a thunderstorm. High near 81. Chance of precipitation is 80%.
Wednesday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 62. Chance of precipitation is 60%.
Thursday
Mostly sunny, with a high near 84.
Thursday Night
Mostly clear, with a low around 62.
Friday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 88.
Friday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 62. Chance of precipitation is 60%.
Saturday
Showers and thunderstorms likely. Partly sunny, with a high near 77. Chance of precipitation is 60%.
Saturday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 43.
Sunday
Mostly sunny, with a high near 64.
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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:
6:35 pm CDT Apr 12, 2026
Forecast Valid:
8pm CDT Apr 12, 2026-6pm CDT Apr 19, 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