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

52°F

11°C

Humidity 41%
Wind Speed NE 7 mph
Barometer 29.76 in (1008.0 mb)
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Wind Chill50°F (10°C)
Last update 25 Feb 4:54 pm CST
Extended Forecast for

Weldon Spring MO

  • Tonight

    Tonight: A chance of rain between 10pm and 3am. Mostly cloudy, with a low around 34. Northeast wind 3 to 5 mph. Chance of precipitation is 40%.

    Low: 34 °F

    Chance Rain

  • Thursday

    Thursday: Mostly sunny, with a high near 56. East wind around 5 mph becoming calm in the afternoon.

    High: 56 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 35. Calm wind becoming southwest around 5 mph after midnight.

    Low: 35 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 70. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 70 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 41. Southwest wind around 6 mph becoming northeast after midnight.

    Low: 41 °F

    Mostly Clear

  • Saturday

    Saturday: A 20 percent chance of rain. Sunny, with a high near 62.

    High: 62 °F

    Slight Chance
    Rain

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 31.

    Low: 31 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of rain and snow. Cloudy, with a high near 43. Chance of precipitation is 50%.

    High: 43 °F

    Chance
    Rain/Snow

  • Sunday Night

    Sunday Night: Rain and snow likely, mainly before midnight. Cloudy, with a low around 27. Chance of precipitation is 70%.

    Low: 27 °F

    Rain/Snow
    Likely

Detailed Forecast

Tonight
A chance of rain between 10pm and 3am. Mostly cloudy, with a low around 34. Northeast wind 3 to 5 mph. Chance of precipitation is 40%.
Thursday
Mostly sunny, with a high near 56. East wind around 5 mph becoming calm in the afternoon.
Thursday Night
Mostly clear, with a low around 35. Calm wind becoming southwest around 5 mph after midnight.
Friday
Sunny, with a high near 70. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Friday Night
Mostly clear, with a low around 41. Southwest wind around 6 mph becoming northeast after midnight.
Saturday
A 20 percent chance of rain. Sunny, with a high near 62.
Saturday Night
Mostly cloudy, with a low around 31.
Sunday
A chance of rain and snow. Cloudy, with a high near 43. Chance of precipitation is 50%.
Sunday Night
Rain and snow likely, mainly before midnight. Cloudy, with a low around 27. Chance of precipitation is 70%.
Monday
A chance of rain and snow before noon, then a chance of rain. Cloudy, with a high near 39. Chance of precipitation is 30%.
Monday Night
A chance of rain or freezing rain. Cloudy, with a low around 27. Chance of precipitation is 40%.
Tuesday
A 50 percent chance of rain. Mostly cloudy, with a high near 45.
Tuesday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 32.
Wednesday
A 30 percent chance of rain. Mostly cloudy, with a high near 52.
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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:
4:56 pm CST Feb 25, 2026
Forecast Valid:
5pm CST Feb 25, 2026-6pm CST Mar 4, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation