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

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fog/Mist

32°F

0°C

Humidity 100%
Wind Speed Calm
Barometer 30.03 in (1017.1 mb)
Dewpoint 32°F (0°C)
Visibility 6.00 mi
Last update 16 Feb 4:53 am CST
Extended Forecast for

Sappington MO

  • Washington's Birthday

    Washington's Birthday: Mostly sunny, with a high near 66. Calm wind becoming south 5 to 8 mph in the morning.

    High: 66 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 43. South wind around 6 mph.

    Low: 43 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 65. South wind 6 to 14 mph, with gusts as high as 25 mph.

    High: 65 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers after midnight. Cloudy during the early evening, then gradual clearing, with a low around 57. South wind 13 to 15 mph, with gusts as high as 29 mph.

    Low: 57 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Wednesday

    Wednesday: Sunny, with a high near 73. West wind 7 to 13 mph, with gusts as high as 25 mph.

    High: 73 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 47.

    Low: 47 °F

    Mostly Clear

  • Thursday

    Thursday: A slight chance of showers, then a chance of showers and thunderstorms after noon. Sunny, with a high near 73. Chance of precipitation is 30%.

    High: 73 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 39.

    Low: 39 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 51.

    High: 51 °F

    Mostly Sunny

Detailed Forecast

Washington's Birthday
Mostly sunny, with a high near 66. Calm wind becoming south 5 to 8 mph in the morning.
Tonight
Partly cloudy, with a low around 43. South wind around 6 mph.
Tuesday
Mostly cloudy, with a high near 65. South wind 6 to 14 mph, with gusts as high as 25 mph.
Tuesday Night
A 20 percent chance of showers after midnight. Cloudy during the early evening, then gradual clearing, with a low around 57. South wind 13 to 15 mph, with gusts as high as 29 mph.
Wednesday
Sunny, with a high near 73. West wind 7 to 13 mph, with gusts as high as 25 mph.
Wednesday Night
Mostly clear, with a low around 47.
Thursday
A slight chance of showers, then a chance of showers and thunderstorms after noon. Sunny, with a high near 73. Chance of precipitation is 30%.
Thursday Night
Mostly clear, with a low around 39.
Friday
Mostly sunny, with a high near 51.
Friday Night
A 20 percent chance of showers. Partly cloudy, with a low around 33.
Saturday
A 30 percent chance of showers. Mostly sunny, with a high near 50.
Saturday Night
A 30 percent chance of showers. Partly cloudy, with a low around 29.
Sunday
A 20 percent chance of showers. Mostly sunny, with a high near 43.
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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:
4:56 am CST Feb 16, 2026
Forecast Valid:
5am CST Feb 16, 2026-6pm CST Feb 22, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation