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 and Breezy

54°F

12°C

Humidity 26%
Wind Speed S 25 G 36 mph
Barometer 29.61 in (1002.8 mb)
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Wind Chill48°F (9°C)
Last update 24 Feb 1:54 pm CST
Extended Forecast for

5 Miles W Dow IL

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 55. Breezy, with a southwest wind 14 to 20 mph, with gusts as high as 31 mph.

    High: 55 °F

    Mostly Cloudy
    and Breezy

  • Tonight

    Tonight: Mostly cloudy, with a low around 33. Southwest wind 6 to 11 mph becoming light and variable after midnight. Winds could gust as high as 20 mph.

    Low: 33 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 51. Calm wind becoming north around 6 mph in the morning.

    High: 51 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A 50 percent chance of rain. Mostly cloudy, with a low around 34. East wind 5 to 7 mph.

    Low: 34 °F

    Chance Rain

  • Thursday

    Thursday: A 20 percent chance of rain before noon. Partly sunny, with a high near 50. East wind 5 to 7 mph becoming west in the afternoon.

    High: 50 °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 66.

    High: 66 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 39.

    Low: 39 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 64.

    High: 64 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 55. Breezy, with a southwest wind 14 to 20 mph, with gusts as high as 31 mph.
Tonight
Mostly cloudy, with a low around 33. Southwest wind 6 to 11 mph becoming light and variable after midnight. Winds could gust as high as 20 mph.
Wednesday
Partly sunny, with a high near 51. Calm wind becoming north around 6 mph in the morning.
Wednesday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 34. East wind 5 to 7 mph.
Thursday
A 20 percent chance of rain before noon. Partly sunny, with a high near 50. East wind 5 to 7 mph becoming west in the afternoon.
Thursday Night
Mostly clear, with a low around 34.
Friday
Sunny, with a high near 66.
Friday Night
Mostly clear, with a low around 39.
Saturday
Sunny, with a high near 64.
Saturday Night
A slight chance of rain and snow. Partly cloudy, with a low around 30. Chance of precipitation is 20%.
Sunday
A chance of rain and snow. Mostly cloudy, with a high near 45. Chance of precipitation is 30%.
Sunday Night
A chance of rain and snow. Mostly cloudy, with a low around 31. Chance of precipitation is 40%.
Monday
A 30 percent chance of rain. Mostly cloudy, with a high near 47.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles W Dow IL
 39.05°N 90.41°W (Elev. 600 ft)
Last Update:
1:41 pm CST Feb 24, 2026
Forecast Valid:
2pm CST Feb 24, 2026-6pm CST Mar 2, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation