Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fair

82°F

28°C

Humidity 85%
Wind Speed Calm
Barometer 29.93 in (1013.0 mb)
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index90°F (32°C)
Last update 19 Jul 8:53 pm CDT
Extended Forecast for

2 Miles S Mehlville MO

Extreme Heat Warning July 19, 09:42pm until July 24, 07:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning July 19, 09:42pm until July 24, 07:00pm

    NOW until 7:00pm Thu

    Extreme Heat Warning

  • Tonight

    Low: 76 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 96. Heat index values as high as 110. Southwest wind 3 to 8 mph.

    High: 96 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms.  Partly cloudy, with a low around 75. Southwest wind 5 to 7 mph becoming calm.  Chance of precipitation is 30%.

    Low: 75 °F

    Chance
    T-storms then
    Chance
    Showers

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after 1pm.  Mostly sunny, with a high near 94. Heat index values as high as 107. Calm wind becoming west around 5 mph.

    High: 94 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Monday Night

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

    Low: 76 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 97.

    High: 97 °F

    Hot

  • Tuesday Night

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

    Low: 76 °F

    Mostly Clear

  • Wednesday

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

    High: 98 °F

    Hot

Detailed Forecast

Tonight
Partly cloudy, with a low around 76. Light south wind.
Sunday
Mostly sunny, with a high near 96. Heat index values as high as 110. Southwest wind 3 to 8 mph.
Sunday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 75. Southwest wind 5 to 7 mph becoming calm. Chance of precipitation is 30%.
Monday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 94. Heat index values as high as 107. Calm wind becoming west around 5 mph.
Monday Night
Mostly clear, with a low around 76. Light south wind.
Tuesday
Sunny and hot, with a high near 97.
Tuesday Night
Mostly clear, with a low around 76.
Wednesday
Sunny and hot, with a high near 98.
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 77.
Friday
Sunny and hot, with a high near 98.
Friday Night
Mostly clear, with a low around 77.
Saturday
A 20 percent chance of showers and thunderstorms. Mostly sunny and hot, with a high near 97.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles S Mehlville MO
 38.47°N 90.32°W (Elev. 499 ft)
7:51 pm CDT Jul 19, 2025
9pm CDT Jul 19, 2025-6pm CDT Jul 26, 2025
 
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