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.

Overcast

58°F

14°C

Humidity 51%
Wind Speed SE 10 mph
Barometer 29.79 in (1008.7 mb)
Dewpoint 40°F (4°C)
Visibility 10.00 mi
Last update 8 Nov 3:54 pm CST
Extended Forecast for

3 Miles ENE Portage Des Sioux MO

  • This Afternoon

    This Afternoon: Scattered showers, mainly after 4pm. Cloudy, with a high near 62. Calm wind becoming east around 6 mph. Chance of precipitation is 30%.

    High: 62 °F

    Scattered
    Showers

  • Tonight

    Tonight: Scattered rain showers before midnight, then scattered flurries after 5am. Cloudy, with a low around 35. East wind 7 to 12 mph becoming northwest 13 to 18 mph in the evening. Winds could gust as high as 30 mph. Chance of precipitation is 30%.

    Low: 35 °F

    Scattered
    Showers then
    Cloudy

  • Sunday

    Sunday: Scattered flurries. Cloudy through mid morning, then gradual clearing, with a high near 39. Northwest wind 16 to 18 mph, with gusts as high as 30 mph.

    High: 39 °F

    Scattered
    Flurries

  • Sunday Night

    Sunday Night: A chance of flurries. Partly cloudy, with a low around 24. Northwest wind 11 to 14 mph, with gusts as high as 22 mph.

    Low: 24 °F

    Chance
    Flurries

  • Monday

    Monday: Sunny, with a high near 41. Northwest wind 9 to 16 mph, with gusts as high as 24 mph.

    High: 41 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 26.

    Low: 26 °F

    Partly Cloudy

  • Veterans Day

    Veterans Day: Partly sunny, with a high near 56.

    High: 56 °F

    Partly Sunny

  • Tuesday Night

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

    Low: 41 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 63.

    High: 63 °F

    Sunny

Detailed Forecast

This Afternoon
Scattered showers, mainly after 4pm. Cloudy, with a high near 62. Calm wind becoming east around 6 mph. Chance of precipitation is 30%.
Tonight
Scattered rain showers before midnight, then scattered flurries after 5am. Cloudy, with a low around 35. East wind 7 to 12 mph becoming northwest 13 to 18 mph in the evening. Winds could gust as high as 30 mph. Chance of precipitation is 30%.
Sunday
Scattered flurries. Cloudy through mid morning, then gradual clearing, with a high near 39. Northwest wind 16 to 18 mph, with gusts as high as 30 mph.
Sunday Night
A chance of flurries. Partly cloudy, with a low around 24. Northwest wind 11 to 14 mph, with gusts as high as 22 mph.
Monday
Sunny, with a high near 41. Northwest wind 9 to 16 mph, with gusts as high as 24 mph.
Monday Night
Partly cloudy, with a low around 26.
Veterans Day
Partly sunny, with a high near 56.
Tuesday Night
Mostly clear, with a low around 41.
Wednesday
Sunny, with a high near 63.
Wednesday Night
Mostly clear, with a low around 35.
Thursday
Mostly sunny, with a high near 63.
Thursday Night
Partly cloudy, with a low around 46.
Friday
Sunny, with a high near 71.
Friday Night
Partly cloudy, with a low around 54.
Saturday
Mostly sunny, with a high near 75.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ENE Portage Des Sioux MO
 38.93°N 90.27°W (Elev. 407 ft)
Last Update:
3:15 pm CST Nov 8, 2025
Forecast Valid:
3pm CST Nov 8, 2025-6pm CST Nov 15, 2025
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation