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.

Mostly Cloudy

97°F

36°C

Humidity 53%
Wind Speed W 13 mph
Barometer 29.88 in (1010.4 mb)
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index113°F (45°C)
Last update 26 Jul 4:51 pm CDT
Extended Forecast for

Maryland Heights MO

Extreme Heat Warning July 26, 05:26pm until July 27, 09:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning July 26, 05:26pm until July 27, 09:00pm

    NOW until 9:00pm Mon

    Extreme Heat Warning

  • Tonight

    Low: 79 °F

    Partly Cloudy

  • Monday

    Monday: Sunny and hot, with a high near 98. Heat index values as high as 113. Light south wind becoming southwest 5 to 9 mph in the morning.

    High: 98 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 81. West wind around 7 mph.

    Low: 81 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 93. Heat index values as high as 103. North wind 6 to 9 mph.

    High: 93 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 73. North wind 5 to 9 mph becoming light northeast in the evening.

    Low: 73 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 89.

    High: 89 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 70.

    Low: 70 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 90.

    High: 90 °F

    Sunny

Detailed Forecast

Tonight
Partly cloudy, with a low around 79. West wind 5 to 7 mph becoming light and variable in the evening.
Monday
Sunny and hot, with a high near 98. Heat index values as high as 113. Light south wind becoming southwest 5 to 9 mph in the morning.
Monday Night
Mostly clear, with a low around 81. West wind around 7 mph.
Tuesday
Mostly sunny, with a high near 93. Heat index values as high as 103. North wind 6 to 9 mph.
Tuesday Night
Partly cloudy, with a low around 73. North wind 5 to 9 mph becoming light northeast in the evening.
Wednesday
Sunny, with a high near 89.
Wednesday Night
Mostly clear, with a low around 70.
Thursday
Sunny, with a high near 90.
Thursday Night
A 30 percent chance of showers after 1am. The rain could be heavy at times. Mostly cloudy, with a low around 72.
Friday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 86. Chance of precipitation is 50%.
Friday Night
A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 70.
Saturday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 85.
Saturday Night
Mostly clear, with a low around 69.
Sunday
Sunny, with a high near 86.
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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 26, 2026
Forecast Valid:
5pm CDT Jul 26, 2026-6pm CDT Aug 2, 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