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.

Overcast

54°F

12°C

Humidity 57%
Wind Speed Calm
Barometer 30.05 in (1017.4 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Last update 1 May 9:53 pm CDT
Extended Forecast for

Crystal City MO

Flood Warning May 1, 10:39pm until May 3, 07:00pm
Click here for hazard details and duration
Flood Warning
  •  
    Flood Warning May 1, 10:39pm until May 3, 07:00pm

    NOW until 7:00pm Sun

    Flood Warning

  • Tonight

    Low: 39 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 62. Calm wind becoming north 5 to 7 mph in the morning.

    High: 62 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 38. Light and variable wind.

    Low: 38 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 76. Calm wind becoming southwest 5 to 9 mph in the morning. Winds could gust as high as 20 mph.

    High: 76 °F

    Sunny

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 53. Southwest wind around 6 mph. Chance of precipitation is 40%.

    Low: 53 °F

    Chance
    T-storms then
    Chance
    Showers

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny
    then Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Partly cloudy, with a low around 56. Chance of precipitation is 60%.

    Low: 56 °F

    Chance
    T-storms then
    Showers
    Likely

  • Tuesday

    Tuesday: Showers and possibly a thunderstorm. High near 69. Chance of precipitation is 80%.

    High: 69 °F

    Showers

Detailed Forecast

Tonight
Partly cloudy, with a low around 39. Calm wind.
Saturday
Mostly sunny, with a high near 62. Calm wind becoming north 5 to 7 mph in the morning.
Saturday Night
Mostly clear, with a low around 38. Light and variable wind.
Sunday
Sunny, with a high near 76. Calm wind becoming southwest 5 to 9 mph in the morning. Winds could gust as high as 20 mph.
Sunday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 53. Southwest wind around 6 mph. Chance of precipitation is 40%.
Monday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 81.
Monday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Partly cloudy, with a low around 56. Chance of precipitation is 60%.
Tuesday
Showers and possibly a thunderstorm. High near 69. Chance of precipitation is 80%.
Tuesday Night
Showers likely, mainly before 1am. Mostly cloudy, with a low around 46. Chance of precipitation is 60%.
Wednesday
A 40 percent chance of showers. Mostly cloudy, with a high near 64.
Wednesday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 43.
Thursday
Mostly sunny, with a high near 67.
Thursday Night
Mostly clear, with a low around 43.
Friday
Sunny, with a high near 74.
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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:
8:31 pm CDT May 1, 2026
Forecast Valid:
10pm CDT May 1, 2026-6pm CDT May 8, 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