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.

Fair

72°F

22°C

Humidity 91%
Wind Speed Calm
Barometer 29.81 in (1009.1 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Last update 18 Jun 1:53 am CDT
Extended Forecast for

Sappington MO

  • Overnight

    Overnight: Mostly cloudy, with a low around 73. South wind around 6 mph.

    Low: 73 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Showers and thunderstorms likely, mainly after 4pm. Some of the storms could produce heavy rainfall. Partly sunny, with a high near 86. Southwest wind 7 to 11 mph, with gusts as high as 24 mph. Chance of precipitation is 60%.

    High: 86 °F

    Slight Chance
    T-storms then
    Heavy Rain

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before midnight, then a slight chance of showers between midnight and 1am. Some of the storms could produce heavy rainfall. Mostly cloudy, with a low around 67. Southwest wind 5 to 9 mph becoming light west after midnight. Chance of precipitation is 40%.

    Low: 67 °F

    Heavy Rain
    then Slight
    Chance
    Showers

  • Juneteenth

    Juneteenth: Sunny, with a high near 85. Northwest wind 3 to 5 mph.

    High: 85 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 67. Calm wind.

    Low: 67 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 90.

    High: 90 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 73.

    Low: 73 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 95.

    High: 95 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 76.

    Low: 76 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 73. South wind around 6 mph.
Wednesday
Showers and thunderstorms likely, mainly after 4pm. Some of the storms could produce heavy rainfall. Partly sunny, with a high near 86. Southwest wind 7 to 11 mph, with gusts as high as 24 mph. Chance of precipitation is 60%.
Wednesday Night
A chance of showers and thunderstorms before midnight, then a slight chance of showers between midnight and 1am. Some of the storms could produce heavy rainfall. Mostly cloudy, with a low around 67. Southwest wind 5 to 9 mph becoming light west after midnight. Chance of precipitation is 40%.
Juneteenth
Sunny, with a high near 85. Northwest wind 3 to 5 mph.
Thursday Night
Mostly clear, with a low around 67. Calm wind.
Friday
Sunny, with a high near 90.
Friday Night
Mostly clear, with a low around 73.
Saturday
Sunny, with a high near 95.
Saturday Night
Mostly clear, with a low around 76.
Sunday
Sunny, with a high near 96.
Sunday Night
Mostly clear, with a low around 76.
Monday
Sunny, with a high near 95.
Monday Night
Mostly clear, with a low around 75.
Tuesday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 94.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sappington MO
 38.51°N 90.38°W (Elev. 607 ft)
Last Update:
10:52 pm CDT Jun 17, 2025
Forecast Valid:
2am CDT Jun 18, 2025-6pm CDT Jun 24, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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