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 68%
Wind Speed S 13 G 23 mph
Barometer 29.80 in (1008.7 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 2 Apr 9:53 pm CDT
Extended Forecast for

Sappington MO

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 61. South wind 6 to 11 mph becoming light and variable after midnight. Winds could gust as high as 23 mph.

    Low: 61 °F

    Chance
    Showers

  • Friday

    Friday: A 50 percent chance of showers and thunderstorms, mainly between 10am and 5pm. Mostly cloudy, with a high near 78. Light southeast wind becoming south 8 to 13 mph in the morning. Winds could gust as high as 23 mph.

    High: 78 °F

    Chance
    T-storms

  • Friday Night

    Friday Night: A slight chance of showers and thunderstorms, then showers and possibly a thunderstorm after 7pm. Low around 57. South wind around 10 mph, with gusts as high as 21 mph. Chance of precipitation is 100%.

    Low: 57 °F

    Showers
    Likely then
    Showers

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 64. West wind 9 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 70%.

    High: 64 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 40. Northwest wind 6 to 10 mph, with gusts as high as 20 mph.

    Low: 40 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 60.

    High: 60 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 40.

    Low: 40 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 63.

    High: 63 °F

    Sunny

  • Monday Night

    Monday Night: A 20 percent chance of showers after 1am. Partly cloudy, with a low around 37.

    Low: 37 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

Detailed Forecast

Tonight
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 61. South wind 6 to 11 mph becoming light and variable after midnight. Winds could gust as high as 23 mph.
Friday
A 50 percent chance of showers and thunderstorms, mainly between 10am and 5pm. Mostly cloudy, with a high near 78. Light southeast wind becoming south 8 to 13 mph in the morning. Winds could gust as high as 23 mph.
Friday Night
A slight chance of showers and thunderstorms, then showers and possibly a thunderstorm after 7pm. Low around 57. South wind around 10 mph, with gusts as high as 21 mph. Chance of precipitation is 100%.
Saturday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 64. West wind 9 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 70%.
Saturday Night
Partly cloudy, with a low around 40. Northwest wind 6 to 10 mph, with gusts as high as 20 mph.
Sunday
Sunny, with a high near 60.
Sunday Night
Clear, with a low around 40.
Monday
Sunny, with a high near 63.
Monday Night
A 20 percent chance of showers after 1am. Partly cloudy, with a low around 37.
Tuesday
Mostly sunny, with a high near 56.
Tuesday Night
Partly cloudy, with a low around 39.
Wednesday
Mostly sunny, with a high near 70.
Wednesday Night
Partly cloudy, with a low around 52.
Thursday
A 20 percent chance of showers. Mostly sunny, with a high near 76.
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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:
7:41 pm CDT Apr 2, 2026
Forecast Valid:
10pm CDT Apr 2, 2026-6pm CDT Apr 9, 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