Severe Weather and Heavy Rain from the Great Lakes to the Mid-Atlantic; Heat Persists in the East

Widespread strong thunderstorms with damaging winds and locally heavy rain are expected from the Upper Ohio Valley into the southern Mid-Atlantic today and portions of the central Appalachians and Carolinas on Saturday. Monsoonal moisture will bring a flash flooding threat to the Desert Southwest. Sweltering heat persists from the Plains to the southern Mid-Atlantic through tonight. Read More >

Current conditions at

St. Louis Lambert International Airport (KSTL)

Lat: 38.75°NLon: 90.37°WElev: 604ft.

Mostly Cloudy

85°F

29°C

Humidity 63%
Wind Speed SW 3 mph
Barometer 29.94 in (1012.2 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index90°F (32°C)
Last update 5 Sep 1:51 am CDT
Extended Forecast for

Castle Point MO

Extreme Heat Warning September 5, 02:51am until September 5, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning September 5, 02:51am until September 5, 08:00pm

    NOW until 8:00pm Sat

    Extreme Heat Warning

  • Overnight

    Low: 79 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny and hot, with a high near 100. Heat index values as high as 108. Calm wind becoming northwest around 6 mph in the morning.

    High: 100 °F

    Hot

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 74. Northwest wind around 6 mph becoming light and variable.

    Low: 74 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 92. East wind 6 to 8 mph.

    High: 92 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 67. East wind 5 to 9 mph.

    Low: 67 °F

    Mostly Clear

  • Labor Day

    Labor Day: Sunny, with a high near 90.

    High: 90 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 69.

    Low: 69 °F

    Mostly Clear

  • Tuesday

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

    High: 98 °F

    Hot

Detailed Forecast

Overnight
Mostly clear, with a low around 79. Calm wind.
Saturday
Mostly sunny and hot, with a high near 100. Heat index values as high as 108. Calm wind becoming northwest around 6 mph in the morning.
Saturday Night
Partly cloudy, with a low around 74. Northwest wind around 6 mph becoming light and variable.
Sunday
Mostly sunny, with a high near 92. East wind 6 to 8 mph.
Sunday Night
Mostly clear, with a low around 67. East wind 5 to 9 mph.
Labor Day
Sunny, with a high near 90.
Monday Night
Mostly clear, with a low around 69.
Tuesday
Sunny and hot, with a high near 98.
Tuesday Night
Mostly clear, with a low around 76.
Wednesday
Sunny and hot, with a high near 101.
Wednesday Night
A 40 percent chance of showers and thunderstorms. Mostly clear, with a low around 74.
Thursday
A 40 percent chance of showers. Mostly sunny, with a high near 91.
Thursday Night
Partly cloudy, with a low around 69.
Friday
A 20 percent chance of showers. Mostly sunny, with a high near 91.
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ABOUT THIS FORECAST

 
Point Forecast:
Castle Point MO
 38.75°N 90.25°W (Elev. 499 ft)
2:31 am CDT Sep 5, 2026
2am CDT Sep 5, 2026-6pm CDT Sep 11, 2026
 
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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