National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

NWS St. Louis Announces Changes To May 16, 2025 Tornado Damage Assessment

After a year-long review of new ground survey data and aerial imagery, NWS St. Louis made several adjustments to the May 16, 2025 tornado damage assessment. Read More >

Hazardous Weather Conditions

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Mostly Cloudy

82°F

28°C

Humidity 77%
Wind Speed SW 3 mph
Barometer 29.92 in (1012.8 mb)
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index88°F (31°C)
Last update 8 Jun 7:53 pm CDT
Extended Forecast for

Mehlville MO

Flood Watch June 8, 09:37pm until June 9, 07:00am
Heat Advisory June 9, 12:00pm until June 9, 10:00pm
Click here for hazard details and duration
Flood Watch
Heat Advisory
  •  
    Flood Watch June 8, 09:37pm until June 9, 07:00am

    NOW until 7:00am Tue

    Flood Watch

  • Tonight

    Low: 72 °F

    Slight Chance
    T-storms

  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms, mainly before 9am. Mostly cloudy, then gradually becoming sunny, with a high near 91. Heat index values as high as 108. Southwest wind 3 to 8 mph.

    High: 91 °F

    Chance
    Showers then
    Slight Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 75. Southwest wind around 6 mph.

    Low: 75 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 94. Heat index values as high as 103. South wind 6 to 10 mph, with gusts as high as 21 mph.

    High: 94 °F

    Sunny

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers and thunderstorms before 1am. Mostly clear, with a low around 75. South wind 7 to 10 mph.

    Low: 75 °F

    Slight Chance
    T-storms

  • Thursday

    Thursday: A slight chance of showers, then a chance of showers and thunderstorms after 10am. Mostly sunny, with a high near 93. Chance of precipitation is 40%.

    High: 93 °F

    Chance
    T-storms

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm before 1am, then a slight chance of showers and thunderstorms after 1am. Low around 69. Chance of precipitation is 80%.

    Low: 69 °F

    Showers

  • Friday

    Friday: Mostly sunny, with a high near 85.

    High: 85 °F

    Mostly Sunny

Detailed Forecast

Tonight
A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 72. Southwest wind 3 to 5 mph. Chance of precipitation is 20%.
Tuesday
A 40 percent chance of showers and thunderstorms, mainly before 9am. Mostly cloudy, then gradually becoming sunny, with a high near 91. Heat index values as high as 108. Southwest wind 3 to 8 mph.
Tuesday Night
Mostly clear, with a low around 75. Southwest wind around 6 mph.
Wednesday
Sunny, with a high near 94. Heat index values as high as 103. South wind 6 to 10 mph, with gusts as high as 21 mph.
Wednesday Night
A 20 percent chance of showers and thunderstorms before 1am. Mostly clear, with a low around 75. South wind 7 to 10 mph.
Thursday
A slight chance of showers, then a chance of showers and thunderstorms after 10am. Mostly sunny, with a high near 93. Chance of precipitation is 40%.
Thursday Night
Showers and possibly a thunderstorm before 1am, then a slight chance of showers and thunderstorms after 1am. Low around 69. Chance of precipitation is 80%.
Friday
Mostly sunny, with a high near 85.
Friday Night
A 20 percent chance of showers after 1am. Mostly clear, with a low around 66.
Saturday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 87.
Saturday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 68.
Sunday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 83.
Sunday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 64.
Monday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 80.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mehlville MO
 38.51°N 90.32°W (Elev. 548 ft)
Last Update:
9:31 pm CDT Jun 8, 2026
Forecast Valid:
9pm CDT Jun 8, 2026-6pm CDT Jun 15, 2026
 
Forecast Discussion
 
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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation