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.

Fair

85°F

29°C

Humidity 75%
Wind Speed Vrbl 5 mph
Barometer 30.02 in (1016.3 mb)
Dewpoint 76°F (24°C)
Visibility 10.00 mi
Heat Index95°F (35°C)
Last update 18 Jul 4:53 pm CDT
Extended Forecast for

2 Miles SE Crystal City MO

Extreme Heat Warning July 19, 12:00pm until July 23, 07:00pm
Click here for hazard details and duration
Extreme Heat Warning

  • Tonight

    Tonight: Scattered showers and thunderstorms, mainly before 11pm. Mostly cloudy, with a low around 74. Light south wind. Chance of precipitation is 30%.

    Low: 74 °F

    Scattered
    T-storms

  • Saturday

    Saturday: A 40 percent chance of showers and thunderstorms, mainly after 10am. Mostly sunny, with a high near 93. Heat index values as high as 106. Light and variable wind becoming southwest around 6 mph in the morning.

    High: 93 °F

    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 20 percent chance of showers and thunderstorms before 1am. Mostly clear, with a low around 76. Southwest wind around 6 mph.

    Low: 76 °F

    Slight Chance
    T-storms

  • Sunday

    Sunday: Mostly sunny and hot, with a high near 97. Heat index values as high as 110. West wind 3 to 5 mph.

    High: 97 °F

    Hot

  • Sunday Night

    Sunday Night: A 20 percent chance of showers and thunderstorms before 1am. Mostly clear, with a low around 76. Light south wind.

    Low: 76 °F

    Slight Chance
    T-storms

  • Monday

    Monday: Mostly sunny and hot, with a high near 97.

    High: 97 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 76.

    Low: 76 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 98.

    High: 98 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 76.

    Low: 76 °F

    Mostly Clear

Detailed Forecast

Tonight
Scattered showers and thunderstorms, mainly before 11pm. Mostly cloudy, with a low around 74. Light south wind. Chance of precipitation is 30%.
Saturday
A 40 percent chance of showers and thunderstorms, mainly after 10am. Mostly sunny, with a high near 93. Heat index values as high as 106. Light and variable wind becoming southwest around 6 mph in the morning.
Saturday Night
A 20 percent chance of showers and thunderstorms before 1am. Mostly clear, with a low around 76. Southwest wind around 6 mph.
Sunday
Mostly sunny and hot, with a high near 97. Heat index values as high as 110. West wind 3 to 5 mph.
Sunday Night
A 20 percent chance of showers and thunderstorms before 1am. Mostly clear, with a low around 76. Light south wind.
Monday
Mostly sunny and hot, with a high near 97.
Monday Night
Mostly clear, with a low around 76.
Tuesday
Sunny and hot, with a high near 98.
Tuesday Night
Mostly clear, with a low around 76.
Wednesday
Sunny and hot, with a high near 99.
Wednesday Night
Mostly clear, with a low around 77.
Thursday
Sunny and hot, with a high near 99.
Thursday Night
Mostly clear, with a low around 76.
Friday
Sunny and hot, with a high near 98.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SE Crystal City MO
 38.2°N 90.36°W (Elev. 692 ft)
Last Update:
5:36 pm CDT Jul 18, 2025
Forecast Valid:
6pm CDT Jul 18, 2025-6pm CDT Jul 25, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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