Current conditions at

St. Louis Lambert International Airport (KSTL)

Lat: 38.75°NLon: 90.37°WElev: 604ft.

A Few Clouds

83°F

28°C

Humidity 70%
Wind Speed SW 6 mph
Barometer 30.00 in (1014.4 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index88°F (31°C)
Last update 19 Aug 1:51 am CDT
Extended Forecast for

2 Miles SE Saint Charles MO

Heat Advisory August 19, 02:44am until August 19, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 19, 02:44am until August 19, 08:00pm

    NOW until 8:00pm Tue

    Heat Advisory

  • Overnight

    Low: 77 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms.  Sunny, with a high near 94. Heat index values as high as 106. Light and variable wind becoming northwest 5 to 7 mph in the morning.

    High: 94 °F

    Slight Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers and thunderstorms before 8pm.  Partly cloudy, with a low around 73. North wind 5 to 8 mph.

    Low: 73 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 87. North wind 6 to 9 mph.

    High: 87 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 66. Northeast wind 5 to 8 mph.

    Low: 66 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 85.

    High: 85 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 66.

    Low: 66 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 87.

    High: 87 °F

    Sunny

Detailed Forecast

Overnight
Mostly clear, with a low around 77. Light southwest wind.
Tuesday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 94. Heat index values as high as 106. Light and variable wind becoming northwest 5 to 7 mph in the morning.
Tuesday Night
A 20 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 73. North wind 5 to 8 mph.
Wednesday
Mostly sunny, with a high near 87. North wind 6 to 9 mph.
Wednesday Night
Mostly clear, with a low around 66. Northeast wind 5 to 8 mph.
Thursday
Sunny, with a high near 85.
Thursday Night
Mostly clear, with a low around 66.
Friday
Sunny, with a high near 87.
Friday Night
Mostly clear, with a low around 68.
Saturday
Mostly sunny, with a high near 87.
Saturday Night
Mostly clear, with a low around 63.
Sunday
Sunny, with a high near 82.
Sunday Night
Mostly clear, with a low around 60.
Monday
Mostly sunny, with a high near 77.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SE Saint Charles MO
 38.78°N 90.48°W (Elev. 440 ft)
1:46 am CDT Aug 19, 2025
2am CDT Aug 19, 2025-6pm CDT Aug 25, 2025
 
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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