National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

Sappington MO

  • This Afternoon

    This Afternoon: Patchy drizzle before 1pm. Cloudy, with a temperature falling to around 47 by 5pm. West wind 10 to 16 mph, with gusts as high as 26 mph.

    High: 61 °F⇓

    Patchy
    Drizzle

  • Tonight

    Tonight: Patchy fog after 3am. Otherwise, partly cloudy, with a low around 36. Northwest wind 3 to 8 mph.

    Low: 36 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Sunday

    Sunday: Patchy fog before 7am. Otherwise, sunny, with a high near 67. Southwest wind 3 to 7 mph.

    High: 67 °F

    Patchy Fog
    then Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 48. South wind 5 to 7 mph.

    Low: 48 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 78. South wind 6 to 10 mph, with gusts as high as 21 mph.

    High: 78 °F

    Sunny

  • Monday Night

    Monday Night: A 20 percent chance of showers after midnight. Mostly clear, with a low around 61.

    Low: 61 °F

    Mostly Clear
    then Slight
    Chance
    Showers

  • Tuesday

    Tuesday: A slight chance of showers and thunderstorms before 9am, then a slight chance of showers between 9am and noon, then a chance of showers and thunderstorms after noon. Mostly sunny, with a high near 81. Chance of precipitation is 50%.

    High: 81 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Rain and possibly a thunderstorm. Low around 52. Chance of precipitation is 90%.

    Low: 52 °F

    Rain

  • Wednesday

    Wednesday: Rain and possibly a thunderstorm before noon, then rain likely. High near 66. Chance of precipitation is 100%.

    High: 66 °F

    Rain then
    Rain Likely

Detailed Forecast

This Afternoon
Patchy drizzle before 1pm. Cloudy, with a temperature falling to around 47 by 5pm. West wind 10 to 16 mph, with gusts as high as 26 mph.
Tonight
Patchy fog after 3am. Otherwise, partly cloudy, with a low around 36. Northwest wind 3 to 8 mph.
Sunday
Patchy fog before 7am. Otherwise, sunny, with a high near 67. Southwest wind 3 to 7 mph.
Sunday Night
Clear, with a low around 48. South wind 5 to 7 mph.
Monday
Sunny, with a high near 78. South wind 6 to 10 mph, with gusts as high as 21 mph.
Monday Night
A 20 percent chance of showers after midnight. Mostly clear, with a low around 61.
Tuesday
A slight chance of showers and thunderstorms before 9am, then a slight chance of showers between 9am and noon, then a chance of showers and thunderstorms after noon. Mostly sunny, with a high near 81. Chance of precipitation is 50%.
Tuesday Night
Rain and possibly a thunderstorm. Low around 52. Chance of precipitation is 90%.
Wednesday
Rain and possibly a thunderstorm before noon, then rain likely. High near 66. Chance of precipitation is 100%.
Wednesday Night
A 20 percent chance of rain before midnight. Partly cloudy, with a low around 33.
Thursday
Sunny, with a high near 53.
Thursday Night
Mostly cloudy, with a low around 42.
Friday
Partly sunny, with a high near 67.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sappington MO
 38.53°N 90.38°W (Elev. 604 ft)
Last Update:
12:25 pm CST Mar 7, 2026
Forecast Valid:
12pm 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