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.

Overcast

39°F

4°C

Humidity 86%
Wind Speed S 5 mph
Barometer 29.93 in (1013.7 mb)
Dewpoint 35°F (2°C)
Visibility 8.00 mi
Wind Chill35°F (2°C)
Last update 7 Dec 3:53 am CST
Extended Forecast for

Crystal City MO

  • Today

    Today: A chance of sprinkles before 11am. Cloudy, with a high near 44. Light and variable wind becoming north 5 to 10 mph in the morning. Winds could gust as high as 20 mph.

    High: 44 °F

    Chance
    Sprinkles

  • Tonight

    Tonight: Cloudy, with a low around 24. North wind 5 to 9 mph, with gusts as high as 20 mph.

    Low: 24 °F

    Cloudy

  • Monday

    Monday: Mostly cloudy, then gradually becoming sunny, with a high near 37. Calm wind.

    High: 37 °F

    Decreasing
    Clouds

  • Monday Night

    Monday Night: Partly cloudy, with a low around 26. Calm wind becoming southwest 5 to 7 mph in the evening.

    Low: 26 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 56. Southwest wind 7 to 10 mph, with gusts as high as 21 mph.

    High: 56 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 42.

    Low: 42 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 51.

    High: 51 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A slight chance of rain and snow after midnight. Mostly cloudy, with a low around 28. Chance of precipitation is 20%.

    Low: 28 °F

    Mostly Cloudy
    then Slight
    Chance
    Rain/Snow

  • Thursday

    Thursday: A chance of snow before noon, then a slight chance of rain. Mostly cloudy, with a high near 42. Chance of precipitation is 30%.

    High: 42 °F

    Chance Snow
    then Slight
    Chance Rain

Detailed Forecast

Today
A chance of sprinkles before 11am. Cloudy, with a high near 44. Light and variable wind becoming north 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Tonight
Cloudy, with a low around 24. North wind 5 to 9 mph, with gusts as high as 20 mph.
Monday
Mostly cloudy, then gradually becoming sunny, with a high near 37. Calm wind.
Monday Night
Partly cloudy, with a low around 26. Calm wind becoming southwest 5 to 7 mph in the evening.
Tuesday
Mostly sunny, with a high near 56. Southwest wind 7 to 10 mph, with gusts as high as 21 mph.
Tuesday Night
Mostly cloudy, with a low around 42.
Wednesday
Partly sunny, with a high near 51.
Wednesday Night
A slight chance of rain and snow after midnight. Mostly cloudy, with a low around 28. Chance of precipitation is 20%.
Thursday
A chance of snow before noon, then a slight chance of rain. Mostly cloudy, with a high near 42. Chance of precipitation is 30%.
Thursday Night
Mostly cloudy, with a low around 18.
Friday
Mostly sunny, with a high near 29.
Friday Night
Mostly cloudy, with a low around 7.
Saturday
Mostly sunny, with a high near 26.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Crystal City MO
 38.22°N 90.39°W (Elev. 446 ft)
Last Update:
3:16 am CST Dec 7, 2025
Forecast Valid:
4am CST Dec 7, 2025-6pm CST Dec 13, 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