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.

Mostly Cloudy

33°F

1°C

Humidity 56%
Wind Speed SE 12 mph
Barometer 30.09 in (1019.2 mb)
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Wind Chill24°F (-4°C)
Last update 18 Mar 12:54 am CDT
Extended Forecast for

4 Miles SW Carrollton IL

  • Overnight

    Overnight: Cloudy, with a low around 28. South wind 11 to 13 mph, with gusts as high as 25 mph.

    Low: 28 °F

    Cloudy

  • Wednesday

    Wednesday: Mostly cloudy through mid morning, then gradual clearing, with a high near 59. South wind 8 to 10 mph becoming west in the afternoon.

    High: 59 °F

    Becoming
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 41. Light and variable wind becoming south around 6 mph in the evening.

    Low: 41 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, then gradually becoming sunny, with a high near 70. South wind 6 to 8 mph becoming northwest in the afternoon.

    High: 70 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 41. North wind 3 to 6 mph.

    Low: 41 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 72.

    High: 72 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 47.

    Low: 47 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 79.

    High: 79 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 53.

    Low: 53 °F

    Mostly Clear

Detailed Forecast

Overnight
Cloudy, with a low around 28. South wind 11 to 13 mph, with gusts as high as 25 mph.
Wednesday
Mostly cloudy through mid morning, then gradual clearing, with a high near 59. South wind 8 to 10 mph becoming west in the afternoon.
Wednesday Night
Mostly cloudy, with a low around 41. Light and variable wind becoming south around 6 mph in the evening.
Thursday
Mostly cloudy, then gradually becoming sunny, with a high near 70. South wind 6 to 8 mph becoming northwest in the afternoon.
Thursday Night
Mostly clear, with a low around 41. North wind 3 to 6 mph.
Friday
Mostly sunny, with a high near 72.
Friday Night
Partly cloudy, with a low around 47.
Saturday
Sunny, with a high near 79.
Saturday Night
Mostly clear, with a low around 53.
Sunday
Mostly sunny, with a high near 76.
Sunday Night
Partly cloudy, with a low around 36.
Monday
Mostly sunny, with a high near 53.
Monday Night
Mostly cloudy, with a low around 34.
Tuesday
Partly sunny, with a high near 56.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SW Carrollton IL
 39.25°N 90.46°W (Elev. 600 ft)
Last Update:
10:21 pm CDT Mar 17, 2026
Forecast Valid:
1am CDT Mar 18, 2026-6pm CDT Mar 24, 2026
 
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Additional Resources

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