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

55°F

13°C

Humidity 31%
Wind Speed SE 9 mph
Barometer 30.23 in (1023.8 mb)
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Wind Chill53°F (12°C)
Last update 12 Feb 12:54 pm CST
Extended Forecast for

4 Miles SW Carrollton IL

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 52. Southeast wind around 9 mph.

    High: 52 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 32. Southeast wind 6 to 8 mph.

    Low: 32 °F

    Decreasing
    Clouds

  • Friday

    Friday: Sunny, with a high near 57. South wind 5 to 7 mph becoming light and variable in the afternoon.

    High: 57 °F

    Sunny

  • Friday Night

    Friday Night: Increasing clouds, with a low around 35. Light south wind.

    Low: 35 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Rain likely, mainly after noon. Cloudy, with a high near 51. Southeast wind 3 to 7 mph. Chance of precipitation is 70%.

    High: 51 °F

    Slight Chance
    Rain then
    Rain Likely

  • Saturday Night

    Saturday Night: Rain, mainly before midnight. Low around 42. Chance of precipitation is 80%.

    Low: 42 °F

    Rain then
    Chance Rain

  • Sunday

    Sunday: Mostly sunny, with a high near 57.

    High: 57 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 35.

    Low: 35 °F

    Mostly Clear

  • Washington's Birthday

    Washington's Birthday: Mostly sunny, with a high near 60.

    High: 60 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 52. Southeast wind around 9 mph.
Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 32. Southeast wind 6 to 8 mph.
Friday
Sunny, with a high near 57. South wind 5 to 7 mph becoming light and variable in the afternoon.
Friday Night
Increasing clouds, with a low around 35. Light south wind.
Saturday
Rain likely, mainly after noon. Cloudy, with a high near 51. Southeast wind 3 to 7 mph. Chance of precipitation is 70%.
Saturday Night
Rain, mainly before midnight. Low around 42. Chance of precipitation is 80%.
Sunday
Mostly sunny, with a high near 57.
Sunday Night
Mostly clear, with a low around 35.
Washington's Birthday
Mostly sunny, with a high near 60.
Monday Night
Mostly cloudy, with a low around 43.
Tuesday
Mostly cloudy, with a high near 64.
Tuesday Night
Mostly cloudy, with a low around 53.
Wednesday
Partly sunny, with a high near 68.
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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:
12:26 pm CST Feb 12, 2026
Forecast Valid:
1pm CST Feb 12, 2026-6pm CST Feb 18, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation