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.

A Few Clouds

38°F

3°C

Humidity 68%
Wind Speed Calm
Barometer 30.04 in (1017.5 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Last update 28 Feb 6:54 am CST
Extended Forecast for

Weldon Spring MO

  • Today

    Today: A 30 percent chance of rain, mainly after 1pm. Mostly sunny, with a high near 64. East wind 5 to 7 mph becoming south in the afternoon.

    High: 64 °F

    Chance Rain

  • Tonight

    Tonight: A 20 percent chance of rain before 7pm. Partly cloudy, with a low around 29. South wind 5 to 10 mph becoming north in the evening. Winds could gust as high as 20 mph.

    Low: 29 °F

    Slight Chance
    Rain then
    Mostly Clear

  • Sunday

    Sunday: A slight chance of rain and snow after noon. Increasing clouds, with a high near 45. Northeast wind around 10 mph. Chance of precipitation is 20%.

    High: 45 °F

    Partly Sunny
    then Slight
    Chance
    Rain/Snow

  • Sunday Night

    Sunday Night: Snow before 3am, then rain and snow likely. Low around 31. Northeast wind around 9 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

    Low: 31 °F

    Snow then
    Rain/Snow
    Likely

  • Monday

    Monday: A chance of rain and snow before 9am, then a chance of rain. Cloudy, with a high near 42. Southeast wind 8 to 10 mph. Chance of precipitation is 50%.

    High: 42 °F

    Chance
    Rain/Snow
    then Slight
    Chance Rain

  • Monday Night

    Monday Night: Rain. Low around 37. Chance of precipitation is 80%.

    Low: 37 °F

    Rain

  • Tuesday

    Tuesday: Rain and possibly a thunderstorm. High near 58. Chance of precipitation is 90%.

    High: 58 °F

    Rain

  • Tuesday Night

    Tuesday Night: Rain and possibly a thunderstorm. Low around 47. Chance of precipitation is 80%.

    Low: 47 °F

    Rain

  • Wednesday

    Wednesday: Rain likely and possibly a thunderstorm. Cloudy, with a high near 64. Chance of precipitation is 70%.

    High: 64 °F

    Rain Likely

Detailed Forecast

Today
A 30 percent chance of rain, mainly after 1pm. Mostly sunny, with a high near 64. East wind 5 to 7 mph becoming south in the afternoon.
Tonight
A 20 percent chance of rain before 7pm. Partly cloudy, with a low around 29. South wind 5 to 10 mph becoming north in the evening. Winds could gust as high as 20 mph.
Sunday
A slight chance of rain and snow after noon. Increasing clouds, with a high near 45. Northeast wind around 10 mph. Chance of precipitation is 20%.
Sunday Night
Snow before 3am, then rain and snow likely. Low around 31. Northeast wind around 9 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.
Monday
A chance of rain and snow before 9am, then a chance of rain. Cloudy, with a high near 42. Southeast wind 8 to 10 mph. Chance of precipitation is 50%.
Monday Night
Rain. Low around 37. Chance of precipitation is 80%.
Tuesday
Rain and possibly a thunderstorm. High near 58. Chance of precipitation is 90%.
Tuesday Night
Rain and possibly a thunderstorm. Low around 47. Chance of precipitation is 80%.
Wednesday
Rain likely and possibly a thunderstorm. Cloudy, with a high near 64. Chance of precipitation is 70%.
Wednesday Night
Rain likely, mainly before midnight. Mostly cloudy, with a low around 48. Chance of precipitation is 60%.
Thursday
A 50 percent chance of rain. Partly sunny, with a high near 69.
Thursday Night
A 50 percent chance of rain. Partly cloudy, with a low around 53.
Friday
Rain likely and possibly a thunderstorm. Mostly cloudy, with a high near 72. 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:
3:57 am CST Feb 28, 2026
Forecast Valid:
7am CST Feb 28, 2026-6pm CST Mar 6, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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