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

St. Louis Lambert International Airport (KSTL)

Lat: 38.75°NLon: 90.37°WElev: 604ft.

Fair

11°F

-12°C

Humidity 67%
Wind Speed NE 3 mph
Barometer 30.55 in (1036.2 mb)
Dewpoint 2°F (-17°C)
Visibility 10.00 mi
Last update 15 Jan 3:51 am CST
Extended Forecast for

Saint Charles MO

  • Today

    Today: Sunny, with a high near 29. Calm wind becoming south around 5 mph.

    High: 29 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a temperature falling to near 22 by 8pm, then rising to around 30 during the remainder of the night. Light and variable wind becoming west 6 to 11 mph in the evening. Winds could gust as high as 23 mph.

    Low: 22 °F⇑

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 38. West wind 6 to 10 mph, with gusts as high as 21 mph.

    High: 38 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 25. Calm wind becoming south around 6 mph after midnight.

    Low: 25 °F

    Patchy Fog

  • Friday

    Friday: Patchy fog before 7am. Otherwise, mostly sunny, with a high near 47. South wind 6 to 10 mph.

    High: 47 °F

    Patchy Fog
    then Partly
    Sunny

  • Friday Night

    Friday Night: Rain likely before 3am, then a chance of rain and snow. Cloudy, with a low around 30. Chance of precipitation is 70%. Little or no snow accumulation expected.

    Low: 30 °F

    Rain Likely
    then Chance
    Rain/Snow

  • Saturday

    Saturday: Partly sunny, with a high near 34.

    High: 34 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 14.

    Low: 14 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny and cold, with a high near 19.

    High: 19 °F

    Cold

Detailed Forecast

Today
Sunny, with a high near 29. Calm wind becoming south around 5 mph.
Tonight
Partly cloudy, with a temperature falling to near 22 by 8pm, then rising to around 30 during the remainder of the night. Light and variable wind becoming west 6 to 11 mph in the evening. Winds could gust as high as 23 mph.
Thursday
Mostly sunny, with a high near 38. West wind 6 to 10 mph, with gusts as high as 21 mph.
Thursday Night
Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 25. Calm wind becoming south around 6 mph after midnight.
Friday
Patchy fog before 7am. Otherwise, mostly sunny, with a high near 47. South wind 6 to 10 mph.
Friday Night
Rain likely before 3am, then a chance of rain and snow. Cloudy, with a low around 30. Chance of precipitation is 70%. Little or no snow accumulation expected.
Saturday
Partly sunny, with a high near 34.
Saturday Night
Mostly cloudy, with a low around 14.
Sunday
Mostly sunny and cold, with a high near 19.
Sunday Night
Mostly clear, with a low around 5.
M.L.King Day
Sunny and cold, with a high near 15.
Monday Night
Partly cloudy, with a low around 3.
Tuesday
Sunny and cold, with a high near 18.
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ABOUT THIS FORECAST

 
Point Forecast:
Saint Charles MO
 38.78°N 90.51°W (Elev. 597 ft)
Last Update:
3:21 am CST Jan 15, 2025
Forecast Valid:
4am CST Jan 15, 2025-6pm CST Jan 21, 2025
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation