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.

Thunderstorm in Vicinity

80°F

27°C

Humidity 85%
Wind Speed S 7 mph
Barometer 29.90 in (1012.1 mb)
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 27 Jun 11:53 am CDT
Extended Forecast for

2 Miles E Mehlville MO

Extreme Heat Watch June 28, 12:00pm until July 3, 12:00am
Flood Advisory until June 27, 03:15pm
Click here for hazard details and duration
Extreme Heat Watch
Flood Advisory
  •  
    Flood Advisory until June 27, 03:15pm

    NOW until 3:15pm Sat

    Flood Advisory

  • This Afternoon

    High: 86 °F

    T-storms
    Likely

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms, mainly between 11pm and 5am. Partly cloudy, with a low around 72. Light south wind.

    Low: 72 °F

    Chance
    T-storms

  • Sunday

    Sunday: Sunny, with a high near 93. Heat index values as high as 105. South wind 3 to 8 mph.

    High: 93 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 75. South wind 3 to 7 mph.

    Low: 75 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 96. South wind 5 to 8 mph.

    High: 96 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 77.

    Low: 77 °F

    Mostly Clear

  • Tuesday

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

    High: 97 °F

    Hot

  • Tuesday Night

    Tuesday Night: Clear, with a low around 77.

    Low: 77 °F

    Clear

Detailed Forecast

This Afternoon
Showers and thunderstorms likely, mainly before 1pm. Partly sunny, with a high near 86. Southwest wind around 5 mph. Chance of precipitation is 60%.
Tonight
A 40 percent chance of showers and thunderstorms, mainly between 11pm and 5am. Partly cloudy, with a low around 72. Light south wind.
Sunday
Sunny, with a high near 93. Heat index values as high as 105. South wind 3 to 8 mph.
Sunday Night
Mostly clear, with a low around 75. South wind 3 to 7 mph.
Monday
Sunny, with a high near 96. South wind 5 to 8 mph.
Monday Night
Mostly clear, with a low around 77.
Tuesday
Sunny and hot, with a high near 97.
Tuesday Night
Clear, with a low around 77.
Wednesday
Sunny, with a high near 96.
Wednesday Night
Mostly clear, with a low around 78.
Thursday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 95.
Thursday Night
Mostly clear, with a low around 77.
Friday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 94.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles E Mehlville MO
 38.51°N 90.29°W (Elev. 502 ft)
Last Update:
11:36 am CDT Jun 27, 2026
Forecast Valid:
12pm CDT Jun 27, 2026-6pm CDT Jul 3, 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