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

Hazardous Weather Conditions

Current conditions at

St. Louis Lambert International Airport (KSTL)

Lat: 38.75°NLon: 90.37°WElev: 604ft.

A Few Clouds

34°F

1°C

Humidity 42%
Wind Speed SW 10 mph
Barometer 29.68 in (1006.0 mb)
Dewpoint 13°F (-11°C)
Visibility 10.00 mi
Wind Chill26°F (-3°C)
Last update 16 Jan 4:51 am CST
Extended Forecast for

Saint Charles MO

  • Today

    Today: A slight chance of snow before 10am, then a chance of rain after 4pm. Increasing clouds, with a high near 45. West wind 8 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 30%.

    High: 45 °F

    Slight Chance
    Snow then
    Chance Rain

  • Tonight

    Tonight: A chance of rain before 7pm, then a chance of snow between 7pm and 11pm. Cloudy, then gradually becoming partly cloudy, with a low around 22. West wind 9 to 13 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.

    Low: 22 °F

    Chance
    Rain/Snow
    then Partly
    Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 26. West wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 26 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 13. West wind 7 to 10 mph, with gusts as high as 20 mph.

    Low: 13 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 33. Southwest wind 7 to 11 mph, with gusts as high as 22 mph.

    High: 33 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 14.

    Low: 14 °F

    Partly Cloudy

  • M.L.King Day

    M.L.King Day: Sunny, with a high near 23.

    High: 23 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 12.

    Low: 12 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 38.

    High: 38 °F

    Mostly Sunny

Detailed Forecast

Today
A slight chance of snow before 10am, then a chance of rain after 4pm. Increasing clouds, with a high near 45. West wind 8 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 30%.
Tonight
A chance of rain before 7pm, then a chance of snow between 7pm and 11pm. Cloudy, then gradually becoming partly cloudy, with a low around 22. West wind 9 to 13 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.
Saturday
Partly sunny, with a high near 26. West wind 10 to 15 mph, with gusts as high as 25 mph.
Saturday Night
Mostly clear, with a low around 13. West wind 7 to 10 mph, with gusts as high as 20 mph.
Sunday
Mostly sunny, with a high near 33. Southwest wind 7 to 11 mph, with gusts as high as 22 mph.
Sunday Night
Partly cloudy, with a low around 14.
M.L.King Day
Sunny, with a high near 23.
Monday Night
Mostly clear, with a low around 12.
Tuesday
Mostly sunny, with a high near 38.
Tuesday Night
Mostly clear, with a low around 28.
Wednesday
Mostly sunny, with a high near 49.
Wednesday Night
Mostly cloudy, with a low around 28.
Thursday
A 20 percent chance of rain. Partly sunny, with a high near 39.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Saint Charles MO
 38.78°N 90.51°W (Elev. 597 ft)
Last Update:
5:01 am CST Jan 16, 2026
Forecast Valid:
5am CST Jan 16, 2026-6pm CST Jan 22, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation