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

Hazardous Weather Conditions

Current conditions at

St. Charles, St. Charles County Smartt Airport (KSET)

Lat: 38.93°NLon: 90.43°WElev: 436ft.

Fair

41°F

5°C

Humidity 38%
Wind Speed S 15 mph
Barometer 29.77 in (1008.5 mb)
Dewpoint 17°F (-8°C)
Visibility 10.00 mi
Wind Chill33°F (1°C)
Last update 24 Feb 11:54 am CST
Extended Forecast for

4 Miles NE Saint Charles MO

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 57. Breezy, with a southwest wind 14 to 20 mph, with gusts as high as 32 mph.

    High: 57 °F

    Mostly Cloudy
    and Breezy

  • Tonight

    Tonight: Mostly cloudy, with a low around 35. Southwest wind 6 to 11 mph becoming light west after midnight. Winds could gust as high as 20 mph.

    Low: 35 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 53. Calm wind becoming north around 6 mph in the afternoon.

    High: 53 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A 50 percent chance of rain. Mostly cloudy, with a low around 36. East wind around 6 mph.

    Low: 36 °F

    Chance Rain

  • Thursday

    Thursday: A 20 percent chance of rain before noon. Partly sunny, with a high near 52. East wind 5 to 7 mph becoming north in the afternoon.

    High: 52 °F

    Slight Chance
    Rain then
    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 34.

    Low: 34 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 67.

    High: 67 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 41.

    Low: 41 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 67.

    High: 67 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 57. Breezy, with a southwest wind 14 to 20 mph, with gusts as high as 32 mph.
Tonight
Mostly cloudy, with a low around 35. Southwest wind 6 to 11 mph becoming light west after midnight. Winds could gust as high as 20 mph.
Wednesday
Partly sunny, with a high near 53. Calm wind becoming north around 6 mph in the afternoon.
Wednesday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 36. East wind around 6 mph.
Thursday
A 20 percent chance of rain before noon. Partly sunny, with a high near 52. East wind 5 to 7 mph becoming north in the afternoon.
Thursday Night
Mostly clear, with a low around 34.
Friday
Sunny, with a high near 67.
Friday Night
Mostly clear, with a low around 41.
Saturday
Sunny, with a high near 67.
Saturday Night
A slight chance of rain before midnight, then a slight chance of rain and snow. Partly cloudy, with a low around 32. Chance of precipitation is 20%.
Sunday
A chance of rain and snow. Partly sunny, with a high near 47. Chance of precipitation is 40%.
Sunday Night
A chance of rain and snow. Mostly cloudy, with a low around 33. Chance of precipitation is 40%.
Monday
A 30 percent chance of rain. Mostly cloudy, with a high near 50.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NE Saint Charles MO
 38.83°N 90.48°W (Elev. 443 ft)
Last Update:
12:26 pm CST Feb 24, 2026
Forecast Valid:
12pm CST Feb 24, 2026-6pm CST Mar 2, 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