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.

Partly Cloudy

46°F

8°C

Humidity 63%
Wind Speed E 6 mph
Barometer 30.27 in (1025.0 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill43°F (6°C)
Last update 20 Apr 2:54 am CDT
Extended Forecast for

Weldon Spring MO

  • Overnight

    Overnight: Partly cloudy, with a low around 41. Light east wind.

    Low: 41 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 70. Light and variable wind becoming southeast 5 to 7 mph in the morning.

    High: 70 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 52. Southeast wind around 7 mph becoming southwest after midnight.

    Low: 52 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 80. Southwest wind 8 to 15 mph, with gusts as high as 24 mph.

    High: 80 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 56. Southwest wind 8 to 10 mph.

    Low: 56 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 78.

    High: 78 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 58.

    Low: 58 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 82.

    High: 82 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 61. Chance of precipitation is 80%.

    Low: 61 °F

    Chance
    T-storms then
    Showers

Detailed Forecast

Overnight
Partly cloudy, with a low around 41. Light east wind.
Monday
Sunny, with a high near 70. Light and variable wind becoming southeast 5 to 7 mph in the morning.
Monday Night
Mostly clear, with a low around 52. Southeast wind around 7 mph becoming southwest after midnight.
Tuesday
Sunny, with a high near 80. Southwest wind 8 to 15 mph, with gusts as high as 24 mph.
Tuesday Night
Mostly clear, with a low around 56. Southwest wind 8 to 10 mph.
Wednesday
Sunny, with a high near 78.
Wednesday Night
Mostly clear, with a low around 58.
Thursday
Mostly sunny, with a high near 82.
Thursday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 61. Chance of precipitation is 80%.
Friday
Showers and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. High near 74. Chance of precipitation is 80%.
Friday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 51.
Saturday
A 20 percent chance of showers. Mostly sunny, with a high near 71.
Saturday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 51.
Sunday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 71.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Weldon Spring MO
 38.72°N 90.65°W (Elev. 584 ft)
Last Update:
1:26 am CDT Apr 20, 2026
Forecast Valid:
3am CDT Apr 20, 2026-6pm CDT Apr 26, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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