Current conditions at

St. Louis Lambert International Airport (KSTL)

Lat: 38.75°NLon: 90.37°WElev: 604ft.

A Few Clouds

77°F

25°C

Humidity 35%
Wind Speed Vrbl 6 mph
Barometer 30.13 in (1019.3 mb)
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 8 Oct 10:51 am CDT
Extended Forecast for

Saint Charles MO

  • Today

    Today: Sunny, with a high near 85. Light and variable wind.

    High: 85 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 54. Light south wind.

    Low: 54 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 88. South wind 5 to 8 mph.

    High: 88 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 62. South wind 5 to 7 mph.

    Low: 62 °F

    Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 84. South wind 5 to 9 mph.

    High: 84 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 50 percent chance of showers.  Mostly cloudy, with a low around 61.

    Low: 61 °F

    Chance
    Showers

  • Sunday

    Sunday: Mostly sunny, with a high near 79.

    High: 79 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 60.

    Low: 60 °F

    Mostly Clear

  • Columbus Day

    Columbus Day: Sunny, with a high near 90.

    High: 90 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 85. Light and variable wind.
Tonight
Clear, with a low around 54. Light south wind.
Friday
Sunny, with a high near 88. South wind 5 to 8 mph.
Friday Night
Clear, with a low around 62. South wind 5 to 7 mph.
Saturday
Mostly sunny, with a high near 84. South wind 5 to 9 mph.
Saturday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 61.
Sunday
Mostly sunny, with a high near 79.
Sunday Night
Mostly clear, with a low around 60.
Columbus Day
Sunny, with a high near 90.
Monday Night
Mostly clear, with a low around 63.
Tuesday
A 20 percent chance of showers. Sunny, with a high near 78.
Tuesday Night
A 20 percent chance of showers. Partly cloudy, with a low around 55.
Wednesday
Sunny, with a high near 75.
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ABOUT THIS FORECAST

 
Point Forecast:
Saint Charles MO
 38.78°N 90.51°W (Elev. 597 ft)
10:36 am CDT Oct 8, 2026
11am CDT Oct 8, 2026-6pm CDT Oct 14, 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