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

37°F

3°C

Humidity 67%
Wind Speed W 7 mph
Barometer 30.32 in (1027.4 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Wind Chill32°F (0°C)
Last update 12 Mar 8:54 am CDT
Extended Forecast for

Weldon Spring MO

  • Today

    Today: Sunny, with a high near 56. West wind 6 to 11 mph becoming southwest in the afternoon.

    High: 56 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 44. Breezy, with a south wind 10 to 15 mph increasing to 17 to 22 mph after midnight. Winds could gust as high as 37 mph.

    Low: 44 °F

    Mostly Clear
    then Partly
    Cloudy and
    Breezy

  • Friday

    Friday: Mostly sunny, with a high near 61. West wind 15 to 17 mph, with gusts as high as 29 mph.

    High: 61 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 36. Northwest wind 5 to 7 mph becoming light and variable.

    Low: 36 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 64. East wind 6 to 11 mph, with gusts as high as 20 mph.

    High: 64 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of rain after 1am. Mostly cloudy, with a low around 53.

    Low: 53 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Sunday

    Sunday: Rain likely and possibly a thunderstorm, then rain after 1pm. High near 67. Breezy. Chance of precipitation is 80%.

    High: 67 °F

    Rain and
    Breezy

  • Sunday Night

    Sunday Night: Rain and snow likely before 1am, then a chance of snow. Mostly cloudy, with a low around 21. Blustery. Chance of precipitation is 60%.

    Low: 21 °F

    Rain/Snow
    Likely and
    Blustery

  • Monday

    Monday: Mostly sunny, with a high near 33. Breezy.

    High: 33 °F

    Mostly Sunny
    and Breezy

Detailed Forecast

Today
Sunny, with a high near 56. West wind 6 to 11 mph becoming southwest in the afternoon.
Tonight
Increasing clouds, with a low around 44. Breezy, with a south wind 10 to 15 mph increasing to 17 to 22 mph after midnight. Winds could gust as high as 37 mph.
Friday
Mostly sunny, with a high near 61. West wind 15 to 17 mph, with gusts as high as 29 mph.
Friday Night
Mostly cloudy, with a low around 36. Northwest wind 5 to 7 mph becoming light and variable.
Saturday
Partly sunny, with a high near 64. East wind 6 to 11 mph, with gusts as high as 20 mph.
Saturday Night
A 20 percent chance of rain after 1am. Mostly cloudy, with a low around 53.
Sunday
Rain likely and possibly a thunderstorm, then rain after 1pm. High near 67. Breezy. Chance of precipitation is 80%.
Sunday Night
Rain and snow likely before 1am, then a chance of snow. Mostly cloudy, with a low around 21. Blustery. Chance of precipitation is 60%.
Monday
Mostly sunny, with a high near 33. Breezy.
Monday Night
Mostly clear, with a low around 15.
Tuesday
Partly sunny, with a high near 41.
Tuesday Night
A slight chance of rain and snow. Mostly cloudy, with a low around 31. Chance of precipitation is 20%.
Wednesday
Partly sunny, with a high near 60.
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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:
5:56 am CDT Mar 12, 2026
Forecast Valid:
9am CDT Mar 12, 2026-6pm CDT Mar 18, 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