Tropical Storm Edouard Impacting the Northwestern Gulf Coast; Hazardous Heat expands in the East

Tropical Storm Edouard will impact the northwestern Gulf Coast through Wednesday with gusty winds, storm surge, and heavy rainfall. Flash and river flooding will be possible, especially in southeastern Texas. Hazardous heat will expand across the central and eastern U.S. by mid-week, and daily chances for severe thunderstorms are expected from the eastern Great Lakes to the Mid-Atlantic this week. Read More >

Current conditions at

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

Lat: 38.66°NLon: 90.66°WElev: 463ft.

Fair

98°F

37°C

Humidity 36%
Wind Speed W 7 mph
Barometer 29.96 in (1013.3 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Heat Index102°F (39°C)
Last update 1 Sep 4:54 pm CDT
Extended Forecast for

Byrnes Mill MO

Heat Advisory September 1, 05:32pm until September 5, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory September 1, 05:32pm until September 5, 08:00pm

    NOW until 8:00pm Sat

    Heat Advisory

  • Tonight

    Low: 75 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 97. Heat index values as high as 104. Calm wind becoming southwest around 5 mph.

    High: 97 °F

    Hot

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 74. South wind around 5 mph becoming calm  after midnight.

    Low: 74 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 98. Heat index values as high as 105. Light southwest wind.

    High: 98 °F

    Hot

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 77. Light south wind.

    Low: 77 °F

    Mostly Clear

  • Friday

    Friday: Sunny and hot, with a high near 99.

    High: 99 °F

    Hot

  • Friday Night

    Friday Night: Mostly clear, with a low around 75.

    Low: 75 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny and hot, with a high near 98.

    High: 98 °F

    Hot

Detailed Forecast

Tonight
Mostly clear, with a low around 75. Light south wind.
Wednesday
Sunny and hot, with a high near 97. Heat index values as high as 104. Calm wind becoming southwest around 5 mph.
Wednesday Night
Mostly clear, with a low around 74. South wind around 5 mph becoming calm after midnight.
Thursday
Sunny and hot, with a high near 98. Heat index values as high as 105. Light southwest wind.
Thursday Night
Mostly clear, with a low around 77. Light south wind.
Friday
Sunny and hot, with a high near 99.
Friday Night
Mostly clear, with a low around 75.
Saturday
Mostly sunny and hot, with a high near 98.
Saturday Night
Partly cloudy, with a low around 73.
Sunday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 95.
Sunday Night
Partly cloudy, with a low around 71.
Labor Day
Mostly sunny, with a high near 92.
Monday Night
Partly cloudy, with a low around 68.
Tuesday
Mostly sunny, with a high near 91.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Byrnes Mill MO
 38.43°N 90.58°W (Elev. 495 ft)
4:46 pm CDT Sep 1, 2026
5pm CDT Sep 1, 2026-6pm CDT Sep 8, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database