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.

Rain

63°F

17°C

Humidity 90%
Wind Speed W 9 mph
Barometer 29.79 in (1008.0 mb)
Dewpoint 60°F (16°C)
Visibility 7.00 mi
Last update 18 Apr 12:54 am CDT
Extended Forecast for

Weldon Spring MO

  • Overnight

    Overnight: Showers and possibly a thunderstorm before 4am, then showers likely. Low around 46. West wind 10 to 16 mph, with gusts as high as 23 mph. Chance of precipitation is 100%.

    Low: 46 °F

    Showers

  • Saturday

    Saturday: A 30 percent chance of showers, mainly before 7am. Cloudy through mid morning, then gradual clearing, with a high near 58. Northwest wind 14 to 16 mph, with gusts as high as 25 mph.

    High: 58 °F

    Chance
    Showers then
    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 40. Northwest wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 20 mph.

    Low: 40 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 67. West wind 5 to 14 mph, with gusts as high as 24 mph.

    High: 67 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 41. Northwest wind 5 to 7 mph becoming light and variable after midnight.

    Low: 41 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 68.

    High: 68 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 51.

    Low: 51 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 78.

    High: 78 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 57.

    Low: 57 °F

    Partly Cloudy

Detailed Forecast

Overnight
Showers and possibly a thunderstorm before 4am, then showers likely. Low around 46. West wind 10 to 16 mph, with gusts as high as 23 mph. Chance of precipitation is 100%.
Saturday
A 30 percent chance of showers, mainly before 7am. Cloudy through mid morning, then gradual clearing, with a high near 58. Northwest wind 14 to 16 mph, with gusts as high as 25 mph.
Saturday Night
Clear, with a low around 40. Northwest wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 20 mph.
Sunday
Sunny, with a high near 67. West wind 5 to 14 mph, with gusts as high as 24 mph.
Sunday Night
Mostly clear, with a low around 41. Northwest wind 5 to 7 mph becoming light and variable after midnight.
Monday
Sunny, with a high near 68.
Monday Night
Mostly clear, with a low around 51.
Tuesday
Mostly sunny, with a high near 78.
Tuesday Night
Partly cloudy, with a low around 57.
Wednesday
Sunny, with a high near 81.
Wednesday Night
Mostly clear, with a low around 60.
Thursday
Mostly sunny, with a high near 84.
Thursday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 63. Chance of precipitation is 60%.
Friday
Showers and thunderstorms likely. Partly sunny, with a high near 78. 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 am CDT Apr 18, 2026
Forecast Valid:
1am CDT Apr 18, 2026-6pm CDT Apr 24, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation