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.

Light Rain

64°F

18°C

Humidity 93%
Wind Speed Calm
Barometer 29.86 in (1010.9 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 16 Apr 12:53 am CDT
Extended Forecast for

Sappington MO

  • Overnight

    Overnight: Showers likely and possibly a thunderstorm before 3am, then scattered showers and thunderstorms after 3am. Cloudy, with a low around 62. Southwest wind around 7 mph, with gusts as high as 21 mph. Chance of precipitation is 70%.

    Low: 62 °F

    Showers
    Likely

  • Thursday

    Thursday: Mostly cloudy, then gradually becoming sunny, with a high near 83. Southwest wind around 7 mph.

    High: 83 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 61. Light south wind.

    Low: 61 °F

    Mostly Clear

  • Friday

    Friday: A 50 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 85. South wind 5 to 13 mph, with gusts as high as 24 mph.

    High: 85 °F

    Mostly Sunny
    then Chance
    T-storms

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm. Low around 50. South wind around 10 mph becoming west after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 90%.

    Low: 50 °F

    Showers
    Likely then
    Showers

  • Saturday

    Saturday: A 50 percent chance of showers. Mostly sunny, with a high near 62.

    High: 62 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 41.

    Low: 41 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 66.

    High: 66 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 43.

    Low: 43 °F

    Clear

Detailed Forecast

Overnight
Showers likely and possibly a thunderstorm before 3am, then scattered showers and thunderstorms after 3am. Cloudy, with a low around 62. Southwest wind around 7 mph, with gusts as high as 21 mph. Chance of precipitation is 70%.
Thursday
Mostly cloudy, then gradually becoming sunny, with a high near 83. Southwest wind around 7 mph.
Thursday Night
Mostly clear, with a low around 61. Light south wind.
Friday
A 50 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 85. South wind 5 to 13 mph, with gusts as high as 24 mph.
Friday Night
Showers and possibly a thunderstorm. Low around 50. South wind around 10 mph becoming west after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 90%.
Saturday
A 50 percent chance of showers. Mostly sunny, with a high near 62.
Saturday Night
Mostly clear, with a low around 41.
Sunday
Sunny, with a high near 66.
Sunday Night
Clear, with a low around 43.
Monday
Sunny, with a high near 73.
Monday Night
Mostly clear, with a low around 53.
Tuesday
Mostly sunny, with a high near 76.
Tuesday Night
A 20 percent chance of showers. Mostly clear, with a low around 55.
Wednesday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 80.
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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:
1:25 am CDT Apr 16, 2026
Forecast Valid:
2am CDT Apr 16, 2026-6pm CDT Apr 22, 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