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.

Fair

38°F

3°C

Humidity 46%
Wind Speed SW 9 G 16 mph
Barometer 30.06 in (1018.1 mb)
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Wind Chill32°F (0°C)
Last update 21 Jan 5:53 am CST
Extended Forecast for

Crystal City MO

  • Today

    Today: Mostly cloudy through mid morning, then gradual clearing, with a high near 49. Southwest wind 6 to 11 mph becoming west in the afternoon. Winds could gust as high as 23 mph.

    High: 49 °F

    Becoming
    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 22. Southwest wind 5 to 9 mph becoming northwest after midnight. Winds could gust as high as 21 mph.

    Low: 22 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 41. Calm wind.

    High: 41 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 11. Calm wind becoming north 5 to 8 mph after midnight. Winds could gust as high as 21 mph.

    Low: 11 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy and cold, with a high near 19. North wind 8 to 10 mph, with gusts as high as 22 mph.

    High: 19 °F

    Cold

  • Friday Night

    Friday Night: A 20 percent chance of snow after midnight. Cloudy, with a low around 1.

    Low: 1 °F

    Cloudy then
    Slight Chance
    Snow

  • Saturday

    Saturday: Snow likely, mainly after noon. Cloudy and cold, with a high near 13. Chance of precipitation is 60%.

    High: 13 °F

    Chance Snow
    then Snow
    Likely

  • Saturday Night

    Saturday Night: Snow likely, mainly before midnight. Mostly cloudy, with a low around 7. Chance of precipitation is 60%.

    Low: 7 °F

    Snow Likely
    then Chance
    Snow

  • Sunday

    Sunday: A 20 percent chance of snow before noon. Partly sunny, with a high near 22.

    High: 22 °F

    Slight Chance
    Snow then
    Partly Sunny

Detailed Forecast

Today
Mostly cloudy through mid morning, then gradual clearing, with a high near 49. Southwest wind 6 to 11 mph becoming west in the afternoon. Winds could gust as high as 23 mph.
Tonight
Mostly clear, with a low around 22. Southwest wind 5 to 9 mph becoming northwest after midnight. Winds could gust as high as 21 mph.
Thursday
Mostly sunny, with a high near 41. Calm wind.
Thursday Night
Mostly cloudy, with a low around 11. Calm wind becoming north 5 to 8 mph after midnight. Winds could gust as high as 21 mph.
Friday
Mostly cloudy and cold, with a high near 19. North wind 8 to 10 mph, with gusts as high as 22 mph.
Friday Night
A 20 percent chance of snow after midnight. Cloudy, with a low around 1.
Saturday
Snow likely, mainly after noon. Cloudy and cold, with a high near 13. Chance of precipitation is 60%.
Saturday Night
Snow likely, mainly before midnight. Mostly cloudy, with a low around 7. Chance of precipitation is 60%.
Sunday
A 20 percent chance of snow before noon. Partly sunny, with a high near 22.
Sunday Night
Partly cloudy, with a low around 4.
Monday
Sunny, with a high near 26.
Monday Night
Mostly clear, with a low around 8.
Tuesday
Mostly sunny, with a high near 40.
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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:
6:11 am CST Jan 21, 2026
Forecast Valid:
6am CST Jan 21, 2026-6pm CST Jan 27, 2026
 
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Additional Resources

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Chance of Precipitation