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.

Partly Cloudy

62°F

17°C

Humidity 84%
Wind Speed SW 13 mph
Barometer 29.87 in (1011.1 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 7 Mar 9:54 am CST
Extended Forecast for

Weldon Spring MO

  • Today

    Today: Cloudy, with a temperature falling to around 47 by 5pm. West wind 7 to 17 mph, with gusts as high as 38 mph.

    High: 61 °F⇓

    Cloudy

  • Tonight

    Tonight: Patchy fog after 3am. Otherwise, mostly cloudy, then gradually becoming mostly clear, with a low around 35. Northwest wind 5 to 9 mph becoming light west after midnight.

    Low: 35 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Sunday

    Sunday: Patchy fog before 7am. Otherwise, sunny, with a high near 67. Southwest wind 5 to 10 mph.

    High: 67 °F

    Patchy Fog
    then Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 47. Southwest wind 6 to 8 mph.

    Low: 47 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 79. Southwest wind 8 to 14 mph, with gusts as high as 23 mph.

    High: 79 °F

    Sunny

  • Monday Night

    Monday Night: A 30 percent chance of rain and thunderstorms after midnight. Mostly clear, with a low around 59.

    Low: 59 °F

    Mostly Clear
    then Chance
    Rain

  • Tuesday

    Tuesday: A chance of rain and thunderstorms, then rain and possibly a thunderstorm after noon. High near 80. Chance of precipitation is 80%.

    High: 80 °F

    Chance Rain
    then Rain

  • Tuesday Night

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

    Low: 51 °F

    Rain

  • Wednesday

    Wednesday: Rain and possibly a thunderstorm before noon, then a chance of rain. High near 63. Chance of precipitation is 80%.

    High: 63 °F

    Rain then
    Chance Rain

Detailed Forecast

Today
Cloudy, with a temperature falling to around 47 by 5pm. West wind 7 to 17 mph, with gusts as high as 38 mph.
Tonight
Patchy fog after 3am. Otherwise, mostly cloudy, then gradually becoming mostly clear, with a low around 35. Northwest wind 5 to 9 mph becoming light west after midnight.
Sunday
Patchy fog before 7am. Otherwise, sunny, with a high near 67. Southwest wind 5 to 10 mph.
Sunday Night
Clear, with a low around 47. Southwest wind 6 to 8 mph.
Monday
Sunny, with a high near 79. Southwest wind 8 to 14 mph, with gusts as high as 23 mph.
Monday Night
A 30 percent chance of rain and thunderstorms after midnight. Mostly clear, with a low around 59.
Tuesday
A chance of rain and thunderstorms, then rain and possibly a thunderstorm after noon. High near 80. Chance of precipitation is 80%.
Tuesday Night
Rain and possibly a thunderstorm. Low around 51. Chance of precipitation is 90%.
Wednesday
Rain and possibly a thunderstorm before noon, then a chance of rain. High near 63. Chance of precipitation is 80%.
Wednesday Night
Partly cloudy, with a low around 34.
Thursday
Mostly sunny, with a high near 55.
Thursday Night
Mostly cloudy, with a low around 41.
Friday
Partly sunny, with a high near 67.
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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:
10:31 am CST Mar 7, 2026
Forecast Valid:
10am CST Mar 7, 2026-6pm CDT Mar 13, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation