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

53°F

12°C

Humidity 48%
Wind Speed S 10 G 18 mph
Barometer 29.79 in (1008.8 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill50°F (10°C)
Last update 9 Dec 1:53 pm CST
Extended Forecast for

Affton MO

Wind Advisory December 10, 03:00am until December 10, 12:00pm
Click here for hazard details and duration
Wind Advisory

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 56. South wind 8 to 10 mph, with gusts as high as 21 mph.

    High: 56 °F

    Mostly Sunny

  • Tonight

    Tonight: A slight chance of rain between 1am and 3am. Mostly cloudy, with a low around 40. South wind 13 to 16 mph becoming west after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 20%.

    Low: 40 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Wednesday

    Wednesday: Partly sunny, with a temperature falling to around 35 by 5pm. Breezy, with a northwest wind 17 to 22 mph decreasing to 11 to 16 mph in the afternoon. Winds could gust as high as 46 mph.

    High: 44 °F⇓

    Partly Sunny
    and Breezy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 26. Northwest wind 5 to 9 mph becoming calm after midnight.

    Low: 26 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 39. Calm wind becoming southeast around 6 mph in the afternoon.

    High: 39 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 34.

    Low: 34 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 44.

    High: 44 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 23.

    Low: 23 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 33.

    High: 33 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 56. South wind 8 to 10 mph, with gusts as high as 21 mph.
Tonight
A slight chance of rain between 1am and 3am. Mostly cloudy, with a low around 40. South wind 13 to 16 mph becoming west after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 20%.
Wednesday
Partly sunny, with a temperature falling to around 35 by 5pm. Breezy, with a northwest wind 17 to 22 mph decreasing to 11 to 16 mph in the afternoon. Winds could gust as high as 46 mph.
Wednesday Night
Mostly cloudy, with a low around 26. Northwest wind 5 to 9 mph becoming calm after midnight.
Thursday
Mostly cloudy, with a high near 39. Calm wind becoming southeast around 6 mph in the afternoon.
Thursday Night
Mostly cloudy, with a low around 34.
Friday
Partly sunny, with a high near 44.
Friday Night
Mostly cloudy, with a low around 23.
Saturday
Mostly cloudy, with a high near 33.
Saturday Night
Mostly cloudy, with a low around 11.
Sunday
Sunny, with a high near 24.
Sunday Night
Partly cloudy, with a low around 15.
Monday
Mostly sunny, with a high near 38.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Affton MO
 38.56°N 90.32°W (Elev. 564 ft)
Last Update:
1:31 pm CST Dec 9, 2025
Forecast Valid:
2pm CST Dec 9, 2025-6pm CST Dec 15, 2025
 
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