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

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

Lat: 38.93°NLon: 90.43°WElev: 436ft.

Fair

32°F

0°C

Humidity 52%
Wind Speed NW 9 mph
Barometer 30.30 in (1026.4 mb)
Dewpoint 16°F (-9°C)
Visibility 10.00 mi
Wind Chill24°F (-4°C)
Last update 21 Feb 8:54 pm CST
Extended Forecast for

4 Miles WSW Foley MO

  • Tonight

    Tonight: Mostly clear, with a low around 19. Northwest wind 8 to 16 mph, with gusts as high as 28 mph.

    Low: 19 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 30. Northwest wind 15 to 18 mph, with gusts as high as 34 mph.

    High: 30 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 13. Northwest wind around 15 mph, with gusts as high as 28 mph.

    Low: 13 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 32. Northwest wind 8 to 13 mph becoming light in the afternoon. Winds could gust as high as 23 mph.

    High: 32 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 19. Calm wind becoming south around 6 mph after midnight.

    Low: 19 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 54.

    High: 54 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 40.

    Low: 40 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 56.

    High: 56 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A 30 percent chance of rain, mainly after midnight. Mostly cloudy, with a low around 33.

    Low: 33 °F

    Chance Rain

Detailed Forecast

Tonight
Mostly clear, with a low around 19. Northwest wind 8 to 16 mph, with gusts as high as 28 mph.
Sunday
Mostly sunny, with a high near 30. Northwest wind 15 to 18 mph, with gusts as high as 34 mph.
Sunday Night
Partly cloudy, with a low around 13. Northwest wind around 15 mph, with gusts as high as 28 mph.
Monday
Sunny, with a high near 32. Northwest wind 8 to 13 mph becoming light in the afternoon. Winds could gust as high as 23 mph.
Monday Night
Partly cloudy, with a low around 19. Calm wind becoming south around 6 mph after midnight.
Tuesday
Partly sunny, with a high near 54.
Tuesday Night
Mostly cloudy, with a low around 40.
Wednesday
Partly sunny, with a high near 56.
Wednesday Night
A 30 percent chance of rain, mainly after midnight. Mostly cloudy, with a low around 33.
Thursday
A 30 percent chance of rain, mainly before noon. Mostly sunny, with a high near 49.
Thursday Night
Mostly clear, with a low around 30.
Friday
Sunny, with a high near 60.
Friday Night
Mostly clear, with a low around 38.
Saturday
Mostly sunny, with a high near 59.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles WSW Foley MO
 39.03°N 90.81°W (Elev. 699 ft)
Last Update:
9:36 pm CST Feb 21, 2026
Forecast Valid:
9pm CST Feb 21, 2026-6pm CST Feb 28, 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