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

42°F

6°C

Humidity 82%
Wind Speed Calm
Barometer 29.81 in (1009.6 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 26 Feb 12:54 am CST
Extended Forecast for

Weldon Spring MO

  • Overnight

    Overnight: A 40 percent chance of rain before 3am. Mostly cloudy, with a low around 34. Northeast wind 6 to 8 mph.

    Low: 34 °F

    Chance Rain

  • Thursday

    Thursday: Mostly cloudy, then gradually becoming sunny, with a high near 56. East wind around 6 mph becoming light and variable in the afternoon.

    High: 56 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Clear, with a low around 37. South wind 3 to 5 mph.

    Low: 37 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 70. Southwest wind 5 to 10 mph increasing to 11 to 16 mph in the afternoon. Winds could gust as high as 24 mph.

    High: 70 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 40. Southwest wind around 6 mph becoming north after midnight.

    Low: 40 °F

    Mostly Clear

  • Saturday

    Saturday: A 20 percent chance of rain. Mostly sunny, with a high near 64.

    High: 64 °F

    Slight Chance
    Rain

  • Saturday Night

    Saturday Night: A 20 percent chance of rain. Partly cloudy, with a low around 30.

    Low: 30 °F

    Slight Chance
    Rain

  • Sunday

    Sunday: Rain and snow likely, mainly after noon. Cloudy, with a high near 39. Chance of precipitation is 60%.

    High: 39 °F

    Chance
    Rain/Snow
    then
    Rain/Snow
    Likely

  • Sunday Night

    Sunday Night: Rain and snow, mainly before midnight. Low around 27. Chance of precipitation is 80%.

    Low: 27 °F

    Rain/Snow
    then Chance
    Rain/Snow

Detailed Forecast

Overnight
A 40 percent chance of rain before 3am. Mostly cloudy, with a low around 34. Northeast wind 6 to 8 mph.
Thursday
Mostly cloudy, then gradually becoming sunny, with a high near 56. East wind around 6 mph becoming light and variable in the afternoon.
Thursday Night
Clear, with a low around 37. South wind 3 to 5 mph.
Friday
Sunny, with a high near 70. Southwest wind 5 to 10 mph increasing to 11 to 16 mph in the afternoon. Winds could gust as high as 24 mph.
Friday Night
Mostly clear, with a low around 40. Southwest wind around 6 mph becoming north after midnight.
Saturday
A 20 percent chance of rain. Mostly sunny, with a high near 64.
Saturday Night
A 20 percent chance of rain. Partly cloudy, with a low around 30.
Sunday
Rain and snow likely, mainly after noon. Cloudy, with a high near 39. Chance of precipitation is 60%.
Sunday Night
Rain and snow, mainly before midnight. Low around 27. Chance of precipitation is 80%.
Monday
A chance of rain and snow before noon, then a slight chance of rain. Cloudy, with a high near 40. Chance of precipitation is 30%.
Monday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 25.
Tuesday
A 50 percent chance of rain. Cloudy, with a high near 43.
Tuesday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 31.
Wednesday
A 40 percent chance of rain. Mostly cloudy, with a high near 51.
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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:
12:26 am CST Feb 26, 2026
Forecast Valid:
1am CST Feb 26, 2026-6pm CST Mar 4, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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