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.

A Few Clouds

87°F

31°C

Humidity 59%
Wind Speed S 8 mph
Barometer 30.09 in (1017.4 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index93°F (34°C)
Last update 15 Aug 11:51 pm CDT
Extended Forecast for

Glendale MO

Heat Advisory August 16, 12:31am until August 18, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 16, 12:31am until August 18, 08:00pm

    NOW until 8:00pm Mon

    Heat Advisory

  • Overnight

    Low: 78 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 98. Heat index values as high as 105. Southwest wind 3 to 6 mph.

    High: 98 °F

    Hot

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 78. South wind around 5 mph becoming calm after midnight.

    Low: 78 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 99. Heat index values as high as 106. Calm wind becoming south around 5 mph in the afternoon.

    High: 99 °F

    Hot

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 78. Southeast wind around 5 mph becoming calm in the evening.

    Low: 78 °F

    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 98.

    High: 98 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 79.

    Low: 79 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after 1pm. Sunny and hot, with a high near 97.

    High: 97 °F

    Sunny then
    Slight Chance
    T-storms

Detailed Forecast

Overnight
Mostly clear, with a low around 78. South wind 3 to 5 mph.
Saturday
Sunny and hot, with a high near 98. Heat index values as high as 105. Southwest wind 3 to 6 mph.
Saturday Night
Mostly clear, with a low around 78. South wind around 5 mph becoming calm after midnight.
Sunday
Sunny and hot, with a high near 99. Heat index values as high as 106. Calm wind becoming south around 5 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 78. Southeast wind around 5 mph becoming calm in the evening.
Monday
Sunny and hot, with a high near 98.
Monday Night
Mostly clear, with a low around 79.
Tuesday
A 20 percent chance of showers and thunderstorms after 1pm. Sunny and hot, with a high near 97.
Tuesday Night
A 30 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 74.
Wednesday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 86.
Wednesday Night
Partly cloudy, with a low around 70.
Thursday
Sunny, with a high near 85.
Thursday Night
Mostly clear, with a low around 68.
Friday
Sunny, with a high near 87.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Glendale MO
 38.6°N 90.37°W (Elev. 509 ft)
Last Update:
11:26 pm CDT Aug 15, 2025
Forecast Valid:
12am CDT Aug 16, 2025-6pm CDT Aug 22, 2025
 
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