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

9°F

-13°C

Humidity 58%
Wind Speed SW 5 mph
Barometer 30.43 in (1031.3 mb)
Dewpoint -3°F (-19°C)
Visibility 10.00 mi
Wind Chill0°F (-18°C)
Last update 19 Jan 11:54 pm CST
Extended Forecast for

3 Miles WNW Carrollton IL

  • Overnight

    Overnight: Increasing clouds, with a low around 11. Southwest wind 3 to 5 mph.

    Low: 11 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Mostly sunny, with a high near 35. South wind 5 to 10 mph.

    High: 35 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Increasing clouds, with a low around 30. Southeast wind 9 to 15 mph becoming southwest after midnight. Winds could gust as high as 28 mph.

    Low: 30 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Mostly cloudy through mid morning, then gradual clearing, with a high near 40. West wind 9 to 14 mph, with gusts as high as 23 mph.

    High: 40 °F

    Becoming
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 21. Southwest wind 8 to 10 mph becoming northwest after midnight. Winds could gust as high as 20 mph.

    Low: 21 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 34.

    High: 34 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 7.

    Low: 7 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy and cold, with a high near 13.

    High: 13 °F

    Cold

  • Friday Night

    Friday Night: A 20 percent chance of snow. Mostly cloudy, with a low around -2.

    Low: -2 °F

    Slight Chance
    Snow

Detailed Forecast

Overnight
Increasing clouds, with a low around 11. Southwest wind 3 to 5 mph.
Tuesday
Mostly sunny, with a high near 35. South wind 5 to 10 mph.
Tuesday Night
Increasing clouds, with a low around 30. Southeast wind 9 to 15 mph becoming southwest after midnight. Winds could gust as high as 28 mph.
Wednesday
Mostly cloudy through mid morning, then gradual clearing, with a high near 40. West wind 9 to 14 mph, with gusts as high as 23 mph.
Wednesday Night
Mostly clear, with a low around 21. Southwest wind 8 to 10 mph becoming northwest after midnight. Winds could gust as high as 20 mph.
Thursday
Mostly sunny, with a high near 34.
Thursday Night
Mostly cloudy, with a low around 7.
Friday
Mostly cloudy and cold, with a high near 13.
Friday Night
A 20 percent chance of snow. Mostly cloudy, with a low around -2.
Saturday
A 20 percent chance of snow. Mostly cloudy and cold, with a high near 11.
Saturday Night
A 30 percent chance of snow. Partly cloudy, with a low around 1.
Sunday
Mostly sunny and cold, with a high near 20.
Sunday Night
Mostly clear, with a low around 8.
Monday
Sunny, with a high near 31.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WNW Carrollton IL
 39.29°N 90.46°W (Elev. 607 ft)
Last Update:
10:51 pm CST Jan 19, 2026
Forecast Valid:
12am CST Jan 20, 2026-6pm CST Jan 26, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation