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

Hazardous Weather Conditions

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fair

94°F

34°C

Humidity 58%
Wind Speed S 8 mph
Barometer 30.03 in (1016.4 mb)
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index109°F (43°C)
Last update 18 Aug 12:53 pm CDT
Extended Forecast for

Sunset Hills MO

Heat Advisory August 18, 12:59pm until August 18, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 18, 12:59pm until August 18, 08:00pm

    NOW until 8:00pm Mon

    Heat Advisory

  • This Afternoon

    High: 97 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly after 5am. Partly cloudy, with a low around 75. Light south wind.

    Low: 75 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms, mainly between 1pm and 5pm. Mostly sunny, with a high near 94. Heat index values as high as 103. Calm wind becoming northwest 5 to 7 mph in the afternoon.

    High: 94 °F

    Slight Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 40 percent chance of showers and thunderstorms after 7pm. Partly cloudy, with a low around 74. North wind around 6 mph becoming calm after midnight.

    Low: 74 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 88. North wind 3 to 8 mph.

    High: 88 °F

    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 67.

    Low: 67 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 85.

    High: 85 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 67.

    Low: 67 °F

    Mostly Clear

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms after 3pm. Sunny and hot, with a high near 97. Heat index values as high as 107. South wind around 6 mph.
Tonight
A 30 percent chance of showers and thunderstorms, mainly after 5am. Partly cloudy, with a low around 75. Light south wind.
Tuesday
A 20 percent chance of showers and thunderstorms, mainly between 1pm and 5pm. Mostly sunny, with a high near 94. Heat index values as high as 103. Calm wind becoming northwest 5 to 7 mph in the afternoon.
Tuesday Night
A 40 percent chance of showers and thunderstorms after 7pm. Partly cloudy, with a low around 74. North wind around 6 mph becoming calm after midnight.
Wednesday
A 30 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 88. North wind 3 to 8 mph.
Wednesday Night
Partly cloudy, with a low around 67.
Thursday
Sunny, with a high near 85.
Thursday Night
Mostly clear, with a low around 67.
Friday
Sunny, with a high near 88.
Friday Night
Mostly clear, with a low around 67.
Saturday
Sunny, with a high near 88.
Saturday Night
Mostly clear, with a low around 64.
Sunday
Sunny, with a high near 83.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sunset Hills MO
 38.54°N 90.41°W (Elev. 574 ft)
Last Update:
12:11 pm CDT Aug 18, 2025
Forecast Valid:
12pm CDT Aug 18, 2025-6pm CDT Aug 24, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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