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.

Overcast

23°F

-5°C

Humidity 74%
Wind Speed N 6 mph
Barometer 30.51 in (1034.6 mb)
Dewpoint 16°F (-9°C)
Visibility 10.00 mi
Wind Chill16°F (-9°C)
Last update 30 Nov 8:51 pm CST
Extended Forecast for

3 Miles S Saint Charles MO

  • Tonight

    Tonight: Cloudy, with a low around 20. North wind around 5 mph becoming calm in the evening.

    Low: 20 °F

    Cloudy

  • Monday

    Monday: A 50 percent chance of snow, mainly after 2pm. Cloudy, with a high near 31. Southeast wind around 5 mph becoming calm in the afternoon.

    High: 31 °F

    Cloudy then
    Chance Snow

  • Monday Night

    Monday Night: Snow, mainly before midnight. Low around 20. Calm wind becoming northwest around 6 mph in the evening. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.

    Low: 20 °F

    Snow then
    Chance Snow

  • Tuesday

    Tuesday: Mostly sunny, with a high near 33. Northwest wind around 5 mph becoming light and variable in the afternoon.

    High: 33 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 21. Calm wind becoming south around 5 mph after midnight.

    Low: 21 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 40.

    High: 40 °F

    Partly Sunny

  • Wednesday Night

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

    Low: 14 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 23.

    High: 23 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 14.

    Low: 14 °F

    Mostly Cloudy
    then Slight
    Chance Snow

Detailed Forecast

Tonight
Cloudy, with a low around 20. North wind around 5 mph becoming calm in the evening.
Monday
A 50 percent chance of snow, mainly after 2pm. Cloudy, with a high near 31. Southeast wind around 5 mph becoming calm in the afternoon.
Monday Night
Snow, mainly before midnight. Low around 20. Calm wind becoming northwest around 6 mph in the evening. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.
Tuesday
Mostly sunny, with a high near 33. Northwest wind around 5 mph becoming light and variable in the afternoon.
Tuesday Night
Partly cloudy, with a low around 21. Calm wind becoming south around 5 mph after midnight.
Wednesday
Partly sunny, with a high near 40.
Wednesday Night
Mostly cloudy, with a low around 14.
Thursday
Mostly sunny, with a high near 23.
Thursday Night
A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 14.
Friday
A chance of snow before noon, then a chance of rain and snow. Mostly cloudy, with a high near 33. Chance of precipitation is 40%.
Friday Night
A slight chance of freezing rain. Mostly cloudy, with a low around 25. Chance of precipitation is 20%.
Saturday
Mostly cloudy, with a high near 38.
Saturday Night
Mostly cloudy, with a low around 27.
Sunday
Mostly cloudy, with a high near 36.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles S Saint Charles MO
 38.74°N 90.51°W (Elev. 420 ft)
Last Update:
8:06 pm CST Nov 30, 2025
Forecast Valid:
9pm CST Nov 30, 2025-6pm CST Dec 7, 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