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.

Mostly Cloudy

51°F

11°C

Humidity 64%
Wind Speed N 12 mph
Barometer 30.09 in (1018.9 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Wind Chill47°F (8°C)
Last update 9 Jan 12:53 pm CST
Extended Forecast for

Crystal City MO

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 53. Calm wind becoming north around 6 mph.

    High: 53 °F

    Partly Sunny

  • Tonight

    Tonight: A 20 percent chance of rain after 3am. Mostly cloudy, with a low around 38. Northeast wind around 5 mph becoming calm.

    Low: 38 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Saturday

    Saturday: A 20 percent chance of rain before 8am. Mostly cloudy through mid morning, then gradual clearing, with a high near 48. Northwest wind 7 to 15 mph, with gusts as high as 24 mph.

    High: 48 °F

    Slight Chance
    Rain then
    Sunny

  • Saturday Night

    Saturday Night: A chance of sprinkles before 11pm. Partly cloudy, with a low around 25. Northwest wind 7 to 11 mph, with gusts as high as 26 mph.

    Low: 25 °F

    Chance
    Sprinkles

  • Sunday

    Sunday: Sunny, with a high near 40. Northwest wind 5 to 9 mph becoming light west in the afternoon. Winds could gust as high as 22 mph.

    High: 40 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 25.

    Low: 25 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 55.

    High: 55 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 38.

    Low: 38 °F

    Mostly Clear

  • Tuesday

    Tuesday: Partly sunny, with a high near 60.

    High: 60 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Partly sunny, with a high near 53. Calm wind becoming north around 6 mph.
Tonight
A 20 percent chance of rain after 3am. Mostly cloudy, with a low around 38. Northeast wind around 5 mph becoming calm.
Saturday
A 20 percent chance of rain before 8am. Mostly cloudy through mid morning, then gradual clearing, with a high near 48. Northwest wind 7 to 15 mph, with gusts as high as 24 mph.
Saturday Night
A chance of sprinkles before 11pm. Partly cloudy, with a low around 25. Northwest wind 7 to 11 mph, with gusts as high as 26 mph.
Sunday
Sunny, with a high near 40. Northwest wind 5 to 9 mph becoming light west in the afternoon. Winds could gust as high as 22 mph.
Sunday Night
Mostly clear, with a low around 25.
Monday
Sunny, with a high near 55.
Monday Night
Mostly clear, with a low around 38.
Tuesday
Partly sunny, with a high near 60.
Tuesday Night
Mostly cloudy, with a low around 36.
Wednesday
Mostly cloudy, with a high near 45.
Wednesday Night
Mostly cloudy, with a low around 24.
Thursday
Mostly sunny, with a high near 42.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Crystal City MO
 38.22°N 90.39°W (Elev. 446 ft)
Last Update:
1:16 pm CST Jan 9, 2026
Forecast Valid:
1pm CST Jan 9, 2026-6pm CST Jan 15, 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