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.

Overcast

26°F

-3°C

Humidity 44%
Wind Speed NE 9 mph
Barometer 30.27 in (1026.1 mb)
Dewpoint 7°F (-14°C)
Visibility 10.00 mi
Wind Chill17°F (-8°C)
Last update 29 Jan 2:54 pm CST
Extended Forecast for

Weldon Spring MO

  • This Afternoon

    This Afternoon: A 40 percent chance of snow, mainly after 5pm. Cloudy, with a high near 26. Northeast wind around 6 mph.

    High: 26 °F

    Chance Snow

  • Tonight

    Tonight: Snow likely, mainly before 9pm. Cloudy, with a low around 5. Northeast wind around 6 mph becoming calm in the evening. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 5 °F

    Snow Likely
    then Mostly
    Cloudy

  • Friday

    Friday: Cloudy, then gradually becoming mostly sunny and cold, with a high near 19. Light northwest wind becoming north 5 to 10 mph in the morning.

    High: 19 °F

    Cold

  • Friday Night

    Friday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 3. Northwest wind 8 to 10 mph, with gusts as high as 22 mph.

    Low: 3 °F

    Decreasing
    Clouds

  • Saturday

    Saturday: Sunny and cold, with a high near 20. Northwest wind 6 to 11 mph, with gusts as high as 22 mph.

    High: 20 °F

    Cold

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 3.

    Low: 3 °F

    Mostly Clear

  • Sunday

    Sunday: Partly sunny, with a high near 31.

    High: 31 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 20.

    Low: 20 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 35.

    High: 35 °F

    Partly Sunny

Detailed Forecast

This Afternoon
A 40 percent chance of snow, mainly after 5pm. Cloudy, with a high near 26. Northeast wind around 6 mph.
Tonight
Snow likely, mainly before 9pm. Cloudy, with a low around 5. Northeast wind around 6 mph becoming calm in the evening. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Friday
Cloudy, then gradually becoming mostly sunny and cold, with a high near 19. Light northwest wind becoming north 5 to 10 mph in the morning.
Friday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 3. Northwest wind 8 to 10 mph, with gusts as high as 22 mph.
Saturday
Sunny and cold, with a high near 20. Northwest wind 6 to 11 mph, with gusts as high as 22 mph.
Saturday Night
Mostly clear, with a low around 3.
Sunday
Partly sunny, with a high near 31.
Sunday Night
Mostly cloudy, with a low around 20.
Monday
Partly sunny, with a high near 35.
Monday Night
Mostly cloudy, with a low around 19.
Tuesday
A slight chance of rain and snow. Mostly cloudy, with a high near 36. Chance of precipitation is 20%.
Tuesday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 24.
Wednesday
A 20 percent chance of snow. Mostly cloudy, with a high near 34.
Wednesday Night
Mostly cloudy, with a low around 21.
Thursday
Partly sunny, with a high near 35.
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:
3:16 pm CST Jan 29, 2026
Forecast Valid:
3pm CST Jan 29, 2026-6pm CST Feb 5, 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