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

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fair

83°F

28°C

Humidity 72%
Wind Speed Vrbl 5 mph
Barometer 29.80 in (1008.5 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index89°F (32°C)
Last update 10 Jun 11:53 pm CDT
Extended Forecast for

Mehlville MO

  • Overnight

    Overnight: A slight chance of showers between 1am and 4am. Mostly cloudy, with a low around 75. South wind around 7 mph. Chance of precipitation is 20%.

    Low: 75 °F

    Slight Chance
    Showers

  • Thursday

    Thursday: Sunny, with a high near 95. Heat index values as high as 106. Southwest wind 7 to 13 mph, with gusts as high as 26 mph.

    High: 95 °F

    Sunny

  • Thursday Night

    Thursday Night: Showers and thunderstorms, mainly before midnight. Low around 65. Southwest wind 6 to 11 mph becoming light and variable after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 90%.

    Low: 65 °F

    Showers then
    Slight Chance
    T-storms

  • Friday

    Friday: Sunny, with a high near 85. Calm wind becoming northwest around 5 mph.

    High: 85 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 65. Calm wind.

    Low: 65 °F

    Mostly Clear

  • Saturday

    Saturday: A 40 percent chance of showers and thunderstorms, mainly before 1pm. Mostly sunny, with a high near 87.

    High: 87 °F

    Chance
    T-storms

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm. Low around 69. Chance of precipitation is 80%.

    Low: 69 °F

    Showers

  • Sunday

    Sunday: A 40 percent chance of showers and thunderstorms, mainly before 1pm. Mostly cloudy, with a high near 80.

    High: 80 °F

    Chance
    T-storms

  • Sunday Night

    Sunday Night: A 30 percent chance of showers. Mostly cloudy, with a low around 61.

    Low: 61 °F

    Chance
    Showers

Detailed Forecast

Overnight
A slight chance of showers between 1am and 4am. Mostly cloudy, with a low around 75. South wind around 7 mph. Chance of precipitation is 20%.
Thursday
Sunny, with a high near 95. Heat index values as high as 106. Southwest wind 7 to 13 mph, with gusts as high as 26 mph.
Thursday Night
Showers and thunderstorms, mainly before midnight. Low around 65. Southwest wind 6 to 11 mph becoming light and variable after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 90%.
Friday
Sunny, with a high near 85. Calm wind becoming northwest around 5 mph.
Friday Night
Mostly clear, with a low around 65. Calm wind.
Saturday
A 40 percent chance of showers and thunderstorms, mainly before 1pm. Mostly sunny, with a high near 87.
Saturday Night
Showers and possibly a thunderstorm. Low around 69. Chance of precipitation is 80%.
Sunday
A 40 percent chance of showers and thunderstorms, mainly before 1pm. Mostly cloudy, with a high near 80.
Sunday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 61.
Monday
A 30 percent chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 74.
Monday Night
A 20 percent chance of showers. Partly cloudy, with a low around 59.
Tuesday
Mostly sunny, with a high near 80.
Tuesday Night
Mostly clear, with a low around 62.
Wednesday
Mostly sunny, with a high near 84.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mehlville MO
 38.51°N 90.32°W (Elev. 548 ft)
Last Update:
10:46 pm CDT Jun 10, 2026
Forecast Valid:
12am CDT Jun 11, 2026-6pm CDT Jun 17, 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