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.

Overcast

67°F

19°C

Humidity 27%
Wind Speed S 6 G 17 mph
Barometer 30.12 in (1019.7 mb)
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Last update 29 Mar 1:54 pm CDT
Extended Forecast for

Weldon Spring MO

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 70. South wind 10 to 13 mph, with gusts as high as 21 mph.

    High: 70 °F

    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 58. South wind 7 to 10 mph, with gusts as high as 22 mph.

    Low: 58 °F

    Decreasing
    Clouds

  • Monday

    Monday: Sunny, with a high near 84. Southwest wind 10 to 16 mph, with gusts as high as 28 mph.

    High: 84 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 64. South wind 11 to 14 mph, with gusts as high as 25 mph.

    Low: 64 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A slight chance of rain, then a chance of rain and thunderstorms after 10am. Partly sunny, with a high near 86. South wind 14 to 18 mph, with gusts as high as 30 mph. Chance of precipitation is 40%.

    High: 86 °F

    Slight Chance
    T-storms then
    Chance Rain

  • Tuesday Night

    Tuesday Night: Rain and possibly a thunderstorm. Low around 55. Chance of precipitation is 80%.

    Low: 55 °F

    Rain

  • Wednesday

    Wednesday: Rain and possibly a thunderstorm. High near 67. Chance of precipitation is 80%.

    High: 67 °F

    Rain

  • Wednesday Night

    Wednesday Night: Rain and possibly a thunderstorm. Low around 51. Chance of precipitation is 90%.

    Low: 51 °F

    Rain

  • Thursday

    Thursday: Rain. High near 66. Chance of precipitation is 80%.

    High: 66 °F

    Rain

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 70. South wind 10 to 13 mph, with gusts as high as 21 mph.
Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 58. South wind 7 to 10 mph, with gusts as high as 22 mph.
Monday
Sunny, with a high near 84. Southwest wind 10 to 16 mph, with gusts as high as 28 mph.
Monday Night
Partly cloudy, with a low around 64. South wind 11 to 14 mph, with gusts as high as 25 mph.
Tuesday
A slight chance of rain, then a chance of rain and thunderstorms after 10am. Partly sunny, with a high near 86. South wind 14 to 18 mph, with gusts as high as 30 mph. Chance of precipitation is 40%.
Tuesday Night
Rain and possibly a thunderstorm. Low around 55. Chance of precipitation is 80%.
Wednesday
Rain and possibly a thunderstorm. High near 67. Chance of precipitation is 80%.
Wednesday Night
Rain and possibly a thunderstorm. Low around 51. Chance of precipitation is 90%.
Thursday
Rain. High near 66. Chance of precipitation is 80%.
Thursday Night
Rain likely, mainly before 1am. Mostly cloudy, with a low around 48. Chance of precipitation is 60%.
Friday
A 40 percent chance of rain. Partly sunny, with a high near 75.
Friday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 56.
Saturday
Rain likely and possibly a thunderstorm. Mostly cloudy, with a high near 71. Chance of precipitation is 70%.
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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:
1:26 pm CDT Mar 29, 2026
Forecast Valid:
2pm CDT Mar 29, 2026-6pm CDT Apr 4, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation