Current conditions at

St. Louis, Spirit Of St. Louis Airport (KSUS)

Lat: 38.66°NLon: 90.66°WElev: 463ft.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

Weldon Spring MO

  • Tonight

    Tonight: Mostly clear, with a low around 12. West wind around 5 mph becoming calm  in the evening.

    Low: 12 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 39. Light south wind increasing to 5 to 9 mph in the morning.

    High: 39 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Increasing clouds, with a low around 32. South wind 8 to 14 mph becoming southwest after midnight. Winds could gust as high as 28 mph.

    Low: 32 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Partly sunny, then gradually becoming sunny, with a high near 44. West wind 7 to 11 mph, with gusts as high as 23 mph.

    High: 44 °F

    Becoming
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 23. Southwest wind 6 to 8 mph becoming northwest after midnight.

    Low: 23 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 37.

    High: 37 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 11.

    Low: 11 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy and cold, with a high near 18.

    High: 18 °F

    Cold

  • Friday Night

    Friday Night: A 20 percent chance of snow.  Mostly cloudy, with a low around 0.

    Low: 0 °F

    Slight Chance
    Snow

Detailed Forecast

Tonight
Mostly clear, with a low around 12. West wind around 5 mph becoming calm in the evening.
Tuesday
Mostly sunny, with a high near 39. Light south wind increasing to 5 to 9 mph in the morning.
Tuesday Night
Increasing clouds, with a low around 32. South wind 8 to 14 mph becoming southwest after midnight. Winds could gust as high as 28 mph.
Wednesday
Partly sunny, then gradually becoming sunny, with a high near 44. West wind 7 to 11 mph, with gusts as high as 23 mph.
Wednesday Night
Mostly clear, with a low around 23. Southwest wind 6 to 8 mph becoming northwest after midnight.
Thursday
Mostly sunny, with a high near 37.
Thursday Night
Mostly cloudy, with a low around 11.
Friday
Mostly cloudy and cold, with a high near 18.
Friday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 0.
Saturday
A 30 percent chance of snow, mainly after noon. Mostly cloudy and cold, with a high near 13.
Saturday Night
A 30 percent chance of snow. Partly cloudy, with a low around 3.
Sunday
Mostly sunny, with a high near 23.
Sunday Night
Mostly clear, with a low around 10.
Monday
Sunny, with a high near 34.
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ABOUT THIS FORECAST

 
Point Forecast:
Weldon Spring MO
 38.72°N 90.65°W (Elev. 584 ft)
3:16 pm CST Jan 19, 2026
3pm CST Jan 19, 2026-6pm CST Jan 26, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database