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

18°F

-8°C

Humidity 47%
Wind Speed N 9 mph
Barometer 30.41 in (1031.3 mb)
Dewpoint 1°F (-17°C)
Visibility 10.00 mi
Wind Chill7°F (-14°C)
Last update 30 Jan 4:54 pm CST
Extended Forecast for

Weldon Spring MO

  • This Afternoon

    This Afternoon: A chance of flurries. Partly sunny and cold, with a high near 20. North wind around 8 mph.

    High: 20 °F

    Chance
    Flurries

  • Tonight

    Tonight: A chance of flurries before 3am. Mostly cloudy, then gradually becoming mostly clear, with a low around 4. North wind 7 to 11 mph, with gusts as high as 22 mph.

    Low: 4 °F

    Chance
    Flurries

  • Saturday

    Saturday: Sunny and cold, with a high near 20. Northwest wind 7 to 11 mph, with gusts as high as 21 mph.

    High: 20 °F

    Cold

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 3. Northwest wind around 6 mph becoming calm in the evening.

    Low: 3 °F

    Mostly Clear

  • Sunday

    Sunday: A 20 percent chance of snow after noon. Partly sunny, with a high near 31. South wind 3 to 7 mph.

    High: 31 °F

    Mostly Sunny
    then Slight
    Chance Snow

  • Sunday Night

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

    Low: 20 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 39.

    High: 39 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 26.

    Low: 26 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A chance of rain and snow, mainly after noon. Mostly cloudy, with a high near 38. Chance of precipitation is 30%.

    High: 38 °F

    Chance
    Rain/Snow

Detailed Forecast

This Afternoon
A chance of flurries. Partly sunny and cold, with a high near 20. North wind around 8 mph.
Tonight
A chance of flurries before 3am. Mostly cloudy, then gradually becoming mostly clear, with a low around 4. North wind 7 to 11 mph, with gusts as high as 22 mph.
Saturday
Sunny and cold, with a high near 20. Northwest wind 7 to 11 mph, with gusts as high as 21 mph.
Saturday Night
Mostly clear, with a low around 3. Northwest wind around 6 mph becoming calm in the evening.
Sunday
A 20 percent chance of snow after noon. Partly sunny, with a high near 31. South wind 3 to 7 mph.
Sunday Night
Mostly cloudy, with a low around 20.
Monday
Mostly sunny, with a high near 39.
Monday Night
Mostly cloudy, with a low around 26.
Tuesday
A chance of rain and snow, mainly after noon. Mostly cloudy, with a high near 38. Chance of precipitation is 30%.
Tuesday Night
Mostly cloudy, with a low around 22.
Wednesday
Mostly cloudy, with a high near 32.
Wednesday Night
Mostly cloudy, with a low around 17.
Thursday
Mostly sunny, with a high near 38.
Thursday Night
Partly cloudy, with a low around 28.
Friday
Mostly sunny, with a high near 43.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Weldon Spring MO
 38.72°N 90.65°W (Elev. 584 ft)
Last Update:
4:46 pm CST Jan 30, 2026
Forecast Valid:
5pm CST Jan 30, 2026-6pm CST Feb 6, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation