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

Hazardous Weather Conditions

Current conditions at

St. Louis Lambert International Airport (KSTL)

Lat: 38.75°NLon: 90.37°WElev: 604ft.

Thunderstorm Light Rain and Breezy

73°F

23°C

Humidity 90%
Wind Speed SW 21 G 36 mph
Barometer 29.99 in (1014.4 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Last update 4 Jul 4:51 pm CDT
Extended Forecast for

Maryland Heights MO

Flash Flood Warning July 4, 05:31pm until July 4, 07:30pm
Click here for hazard details and duration
Flash Flood Warning
  •  
    Flash Flood Warning July 4, 05:31pm until July 4, 07:30pm

    NOW until 7:30pm Sat

    Flash Flood Warning

  • Independence Day

    High: 79 °F

    T-storms

  • Tonight

    Tonight: Showers and thunderstorms, mainly before 8pm. Low around 73. Light and variable wind. Chance of precipitation is 80%.

    Low: 73 °F

    T-storms then
    Slight Chance
    T-storms

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 89. Calm wind becoming northwest around 6 mph in the afternoon.

    High: 89 °F

    Slight Chance
    T-storms

  • Sunday Night

    Sunday Night: A 20 percent chance of showers and thunderstorms before 9pm. Mostly clear, with a low around 71. North wind 5 to 7 mph becoming calm in the evening.

    Low: 71 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 88. Northeast wind 3 to 7 mph.

    High: 88 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 70.

    Low: 70 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 89.

    High: 89 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 71.

    Low: 71 °F

    Mostly Clear

Detailed Forecast

Independence Day
Showers and thunderstorms. Steady temperature around 79. West wind around 6 mph. Chance of precipitation is 100%.
Tonight
Showers and thunderstorms, mainly before 8pm. Low around 73. Light and variable wind. Chance of precipitation is 80%.
Sunday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 89. Calm wind becoming northwest around 6 mph in the afternoon.
Sunday Night
A 20 percent chance of showers and thunderstorms before 9pm. Mostly clear, with a low around 71. North wind 5 to 7 mph becoming calm in the evening.
Monday
Mostly sunny, with a high near 88. Northeast wind 3 to 7 mph.
Monday Night
Partly cloudy, with a low around 70.
Tuesday
Sunny, with a high near 89.
Tuesday Night
Mostly clear, with a low around 71.
Wednesday
Sunny, with a high near 93.
Wednesday Night
Mostly clear, with a low around 74.
Thursday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 94.
Thursday Night
Showers and thunderstorms likely. Partly cloudy, with a low around 74. Chance of precipitation is 60%.
Friday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 91.
Friday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72.
Saturday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Maryland Heights MO
 38.72°N 90.48°W (Elev. 440 ft)
Last Update:
5:21 pm CDT Jul 4, 2026
Forecast Valid:
5pm CDT Jul 4, 2026-6pm CDT Jul 11, 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