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

91°F

33°C

Humidity 50%
Wind Speed S 6 mph
Barometer 29.94 in (1012.9 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index97°F (36°C)
Last update 9 Aug 4:54 pm CDT
Extended Forecast for

3 Miles WSW Weldon Spring Heights MO

  • Tonight

    Tonight: Partly cloudy, with a low around 75. South wind 6 to 8 mph.

    Low: 75 °F

    Partly Cloudy

  • Sunday

    Sunday: A 40 percent chance of showers and thunderstorms, mainly between 7am and 2pm. Mostly sunny, with a high near 92. Heat index values as high as 100. South wind 7 to 9 mph.

    High: 92 °F

    Chance
    T-storms

  • Sunday Night

    Sunday Night: A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 73. South wind 5 to 7 mph.

    Low: 73 °F

    Slight Chance
    T-storms

  • Monday

    Monday: A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 91. South wind 3 to 6 mph. Chance of precipitation is 30%.

    High: 91 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Monday Night

    Monday Night: A 30 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 72. Light south wind.

    Low: 72 °F

    Chance
    T-storms then
    Chance
    Showers

  • Tuesday

    Tuesday: A slight chance of showers, then a chance of showers and thunderstorms after 10am. Mostly sunny, with a high near 90. Chance of precipitation is 40%.

    High: 90 °F

    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 71.

    Low: 71 °F

    Slight Chance
    T-storms

  • Wednesday

    Wednesday: A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 89. Chance of precipitation is 30%.

    High: 89 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 71.

    Low: 71 °F

    Slight Chance
    T-storms

Detailed Forecast

Tonight
Partly cloudy, with a low around 75. South wind 6 to 8 mph.
Sunday
A 40 percent chance of showers and thunderstorms, mainly between 7am and 2pm. Mostly sunny, with a high near 92. Heat index values as high as 100. South wind 7 to 9 mph.
Sunday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 73. South wind 5 to 7 mph.
Monday
A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 91. South wind 3 to 6 mph. Chance of precipitation is 30%.
Monday Night
A 30 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 72. Light south wind.
Tuesday
A slight chance of showers, then a chance of showers and thunderstorms after 10am. Mostly sunny, with a high near 90. Chance of precipitation is 40%.
Tuesday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 71.
Wednesday
A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 89. Chance of precipitation is 30%.
Wednesday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 71.
Thursday
A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 89. Chance of precipitation is 30%.
Thursday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 71.
Friday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91.
Friday Night
Partly cloudy, with a low around 72.
Saturday
Sunny, with a high near 93.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WSW Weldon Spring Heights MO
 38.7°N 90.74°W (Elev. 656 ft)
Last Update:
4:21 pm CDT Aug 9, 2025
Forecast Valid:
5pm CDT Aug 9, 2025-6pm CDT Aug 16, 2025
 
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