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

52°F

11°C

Humidity 28%
Wind Speed S 6 mph
Barometer 29.97 in (1015.2 mb)
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Wind Chill50°F (10°C)
Last update 12 Mar 7:54 pm CDT
Extended Forecast for

Weldon Spring MO

  • Tonight

    Tonight: Partly cloudy, with a low around 45. South wind 8 to 18 mph, with gusts as high as 33 mph.

    Low: 45 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 60. West wind 11 to 16 mph, with gusts as high as 28 mph.

    High: 60 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 36. Northwest wind around 6 mph becoming calm.

    Low: 36 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 66. Southeast wind 6 to 11 mph, with gusts as high as 20 mph.

    High: 66 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 54. South wind 9 to 13 mph, with gusts as high as 23 mph.

    Low: 54 °F

    Mostly Cloudy

  • Sunday

    Sunday: Rain and possibly a thunderstorm. High near 68. Breezy. Chance of precipitation is 90%.

    High: 68 °F

    Rain Likely
    then Rain and
    Breezy

  • Sunday Night

    Sunday Night: Rain and snow before 1am, then a chance of snow. Some thunder is also possible. Low around 20. Blustery. Chance of precipitation is 80%.

    Low: 20 °F

    Rain/Snow and
    Blustery

  • Monday

    Monday: A 20 percent chance of snow before 1pm. Partly sunny, with a high near 29. Blustery.

    High: 29 °F

    Slight Chance
    Snow and
    Blustery

  • Monday Night

    Monday Night: Mostly clear, with a low around 12.

    Low: 12 °F

    Mostly Clear

Detailed Forecast

Tonight
Partly cloudy, with a low around 45. South wind 8 to 18 mph, with gusts as high as 33 mph.
Friday
Mostly sunny, with a high near 60. West wind 11 to 16 mph, with gusts as high as 28 mph.
Friday Night
Partly cloudy, with a low around 36. Northwest wind around 6 mph becoming calm.
Saturday
Partly sunny, with a high near 66. Southeast wind 6 to 11 mph, with gusts as high as 20 mph.
Saturday Night
Mostly cloudy, with a low around 54. South wind 9 to 13 mph, with gusts as high as 23 mph.
Sunday
Rain and possibly a thunderstorm. High near 68. Breezy. Chance of precipitation is 90%.
Sunday Night
Rain and snow before 1am, then a chance of snow. Some thunder is also possible. Low around 20. Blustery. Chance of precipitation is 80%.
Monday
A 20 percent chance of snow before 1pm. Partly sunny, with a high near 29. Blustery.
Monday Night
Mostly clear, with a low around 12.
Tuesday
Mostly sunny, with a high near 36.
Tuesday Night
A slight chance of rain and snow. Mostly cloudy, with a low around 27. Chance of precipitation is 20%.
Wednesday
Partly sunny, with a high near 57.
Wednesday Night
Partly cloudy, with a low around 39.
Thursday
Sunny, with a high near 68.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Weldon Spring MO
 38.72°N 90.65°W (Elev. 584 ft)
Last Update:
7:26 pm CDT Mar 12, 2026
Forecast Valid:
8pm CDT Mar 12, 2026-6pm CDT Mar 19, 2026
 
Forecast Discussion
 
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Additional Resources

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