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

Hazardous Weather Conditions

Current conditions at

St. Louis, Spirit Of St. Louis Airport (KSUS)

Lat: 38.66°NLon: 90.66°WElev: 463ft.

A Few Clouds

81°F

27°C

Humidity 74%
Wind Speed S 3 mph
Barometer 29.97 in (1014.1 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 17 Aug 5:54 pm CDT
Extended Forecast for

3 Miles N Flint Hill MO

Heat Advisory August 17, 06:15pm until August 18, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 17, 06:15pm until August 18, 08:00pm

    NOW until 8:00pm Mon

    Heat Advisory

  • Tonight

    Low: 76 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 95. Heat index values as high as 106. South wind 3 to 6 mph.

    High: 95 °F

    Sunny then
    Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms before 10pm, then a slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 74. Calm wind. Chance of precipitation is 30%.

    Low: 74 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91. Heat index values as high as 102. Calm wind becoming west around 5 mph in the afternoon.

    High: 91 °F

    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms before 4am, then a slight chance of showers. Mostly cloudy, with a low around 71. Calm wind. Chance of precipitation is 30%.

    Low: 71 °F

    Chance
    T-storms then
    Chance
    Showers

  • Wednesday

    Wednesday: A slight chance of showers, with thunderstorms also possible after 10am. Mostly sunny, with a high near 84. Chance of precipitation is 20%.

    High: 84 °F

    Slight Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 65.

    Low: 65 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 83.

    High: 83 °F

    Mostly Sunny

Detailed Forecast

Tonight
A 20 percent chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 76. Light and variable wind becoming southeast around 5 mph.
Monday
A 30 percent chance of showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 95. Heat index values as high as 106. South wind 3 to 6 mph.
Monday Night
A chance of showers and thunderstorms before 10pm, then a slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 74. Calm wind. Chance of precipitation is 30%.
Tuesday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91. Heat index values as high as 102. Calm wind becoming west around 5 mph in the afternoon.
Tuesday Night
A chance of showers and thunderstorms before 4am, then a slight chance of showers. Mostly cloudy, with a low around 71. Calm wind. Chance of precipitation is 30%.
Wednesday
A slight chance of showers, with thunderstorms also possible after 10am. Mostly sunny, with a high near 84. Chance of precipitation is 20%.
Wednesday Night
Mostly clear, with a low around 65.
Thursday
Mostly sunny, with a high near 83.
Thursday Night
Mostly clear, with a low around 65.
Friday
Sunny, with a high near 85.
Friday Night
Mostly clear, with a low around 65.
Saturday
Mostly sunny, with a high near 85.
Saturday Night
Mostly clear, with a low around 60.
Sunday
Sunny, with a high near 79.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles N Flint Hill MO
 38.9°N 90.87°W (Elev. 515 ft)
Last Update:
5:31 pm CDT Aug 17, 2025
Forecast Valid:
6pm CDT Aug 17, 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