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.

Fair

53°F

12°C

Humidity 89%
Wind Speed N 5 mph
Barometer 29.99 in (1015.6 mb)
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Wind Chill52°F (11°C)
Last update 18 Nov 7:51 pm CST
Extended Forecast for

Saint Charles MO

  • Tonight

    Tonight: Mostly cloudy, with a low around 46. North wind 3 to 6 mph.

    Low: 46 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Cloudy, with a high near 57. North wind around 5 mph becoming calm in the morning.

    High: 57 °F

    Cloudy

  • Wednesday Night

    Wednesday Night: A 30 percent chance of rain after midnight. Mostly cloudy, with a low around 49. Calm wind becoming southeast around 5 mph after midnight.

    Low: 49 °F

    Mostly Cloudy
    then Chance
    Rain

  • Thursday

    Thursday: Rain likely and possibly a thunderstorm before 9am, then rain likely between 9am and 3pm, then rain likely and possibly a thunderstorm after 3pm. Cloudy, with a high near 61. Southeast wind 3 to 6 mph. Chance of precipitation is 70%.

    High: 61 °F

    Rain Likely

  • Thursday Night

    Thursday Night: Rain likely. Cloudy, with a low around 53. Calm wind becoming north around 5 mph after midnight. Chance of precipitation is 60%.

    Low: 53 °F

    Rain Likely

  • Friday

    Friday: Rain. High near 58. Chance of precipitation is 80%.

    High: 58 °F

    Rain

  • Friday Night

    Friday Night: A 40 percent chance of rain, mainly before midnight. Mostly cloudy, with a low around 48.

    Low: 48 °F

    Chance Rain

  • Saturday

    Saturday: Partly sunny, with a high near 58.

    High: 58 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 43.

    Low: 43 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 46. North wind 3 to 6 mph.
Wednesday
Cloudy, with a high near 57. North wind around 5 mph becoming calm in the morning.
Wednesday Night
A 30 percent chance of rain after midnight. Mostly cloudy, with a low around 49. Calm wind becoming southeast around 5 mph after midnight.
Thursday
Rain likely and possibly a thunderstorm before 9am, then rain likely between 9am and 3pm, then rain likely and possibly a thunderstorm after 3pm. Cloudy, with a high near 61. Southeast wind 3 to 6 mph. Chance of precipitation is 70%.
Thursday Night
Rain likely. Cloudy, with a low around 53. Calm wind becoming north around 5 mph after midnight. Chance of precipitation is 60%.
Friday
Rain. High near 58. Chance of precipitation is 80%.
Friday Night
A 40 percent chance of rain, mainly before midnight. Mostly cloudy, with a low around 48.
Saturday
Partly sunny, with a high near 58.
Saturday Night
Mostly clear, with a low around 43.
Sunday
Sunny, with a high near 61.
Sunday Night
Partly cloudy, with a low around 45.
Monday
A 30 percent chance of rain. Partly sunny, with a high near 59.
Monday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 46.
Tuesday
A 40 percent chance of rain. Mostly cloudy, with a high near 56.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Saint Charles MO
 38.78°N 90.51°W (Elev. 597 ft)
Last Update:
7:41 pm CST Nov 18, 2025
Forecast Valid:
7pm CST Nov 18, 2025-6pm CST Nov 25, 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