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

30°F

-1°C

Humidity 49%
Wind Speed NW 18 G 31 mph
Barometer 30.12 in (1020.1 mb)
Dewpoint 13°F (-11°C)
Visibility 10.00 mi
Wind Chill18°F (-8°C)
Last update 14 Jan 7:53 pm CST
Extended Forecast for

Crystal City MO

  • Tonight

    Tonight: Clear, with a low around 17. Northwest wind 5 to 10 mph, with gusts as high as 28 mph.

    Low: 17 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 37. Light and variable wind becoming northwest around 5 mph.

    High: 37 °F

    Sunny

  • Thursday Night

    Thursday Night: A chance of snow before 11pm, then a chance of rain between 11pm and 3am, then a slight chance of snow after 3am. Mostly cloudy, with a steady temperature around 33. Light and variable wind becoming south around 6 mph in the evening. Chance of precipitation is 30%.

    Low: 33 °F

    Chance
    Rain/Snow

  • Friday

    Friday: Partly sunny, with a high near 46. West wind 6 to 11 mph, with gusts as high as 25 mph.

    High: 46 °F

    Partly Sunny

  • Friday Night

    Friday Night: A chance of sprinkles before 8pm, then a chance of flurries between 8pm and midnight, then a slight chance of snow showers after midnight. Mostly cloudy, with a low around 20. West wind around 8 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.

    Low: 20 °F

    Chance
    Sprinkles/Flurries
    then Slight
    Chance Snow
    Showers

  • Saturday

    Saturday: Partly sunny, with a high near 29.

    High: 29 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 8.

    Low: 8 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 28.

    High: 28 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 14.

    Low: 14 °F

    Partly Cloudy

Detailed Forecast

Tonight
Clear, with a low around 17. Northwest wind 5 to 10 mph, with gusts as high as 28 mph.
Thursday
Sunny, with a high near 37. Light and variable wind becoming northwest around 5 mph.
Thursday Night
A chance of snow before 11pm, then a chance of rain between 11pm and 3am, then a slight chance of snow after 3am. Mostly cloudy, with a steady temperature around 33. Light and variable wind becoming south around 6 mph in the evening. Chance of precipitation is 30%.
Friday
Partly sunny, with a high near 46. West wind 6 to 11 mph, with gusts as high as 25 mph.
Friday Night
A chance of sprinkles before 8pm, then a chance of flurries between 8pm and midnight, then a slight chance of snow showers after midnight. Mostly cloudy, with a low around 20. West wind around 8 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.
Saturday
Partly sunny, with a high near 29.
Saturday Night
Partly cloudy, with a low around 8.
Sunday
Mostly sunny, with a high near 28.
Sunday Night
Partly cloudy, with a low around 14.
M.L.King Day
Mostly sunny, with a high near 30.
Monday Night
Mostly clear, with a low around 10.
Tuesday
Sunny, with a high near 36.
Tuesday Night
Mostly clear, with a low around 20.
Wednesday
Sunny, with a high near 46.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Crystal City MO
 38.22°N 90.39°W (Elev. 446 ft)
Last Update:
4:51 pm CST Jan 14, 2026
Forecast Valid:
7pm CST Jan 14, 2026-6pm CST Jan 21, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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