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

50°F

10°C

Humidity 48%
Wind Speed S 5 mph
Barometer 30.05 in (1017.8 mb)
Dewpoint 31°F (-1°C)
Visibility 10.00 mi
Wind Chill48°F (9°C)
Last update 9 Feb 1:54 pm CST
Extended Forecast for

4 Miles SW Carrollton IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 51. South wind around 7 mph.

    High: 51 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 43. Southeast wind 7 to 10 mph becoming southwest after midnight.

    Low: 43 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 55. West wind 7 to 13 mph becoming north in the morning. Winds could gust as high as 21 mph.

    High: 55 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 28. North wind 6 to 8 mph.

    Low: 28 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 48. North wind around 6 mph.

    High: 48 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 30.

    Low: 30 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 20 percent chance of rain after noon. Cloudy, with a high near 44.

    High: 44 °F

    Cloudy then
    Slight Chance
    Rain

  • Thursday Night

    Thursday Night: A 30 percent chance of rain, mainly before midnight. Mostly cloudy, with a low around 31.

    Low: 31 °F

    Chance Rain

  • Friday

    Friday: Partly sunny, with a high near 46.

    High: 46 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 51. South wind around 7 mph.
Tonight
Mostly clear, with a low around 43. Southeast wind 7 to 10 mph becoming southwest after midnight.
Tuesday
Sunny, with a high near 55. West wind 7 to 13 mph becoming north in the morning. Winds could gust as high as 21 mph.
Tuesday Night
Mostly clear, with a low around 28. North wind 6 to 8 mph.
Wednesday
Mostly sunny, with a high near 48. North wind around 6 mph.
Wednesday Night
Mostly cloudy, with a low around 30.
Thursday
A 20 percent chance of rain after noon. Cloudy, with a high near 44.
Thursday Night
A 30 percent chance of rain, mainly before midnight. Mostly cloudy, with a low around 31.
Friday
Partly sunny, with a high near 46.
Friday Night
A 30 percent chance of rain, mainly after midnight. Mostly cloudy, with a low around 33.
Saturday
Rain likely. Cloudy, with a high near 46. Chance of precipitation is 70%.
Saturday Night
Rain. Low around 34. Chance of precipitation is 80%.
Sunday
A 40 percent chance of rain. Mostly sunny, with a high near 49.
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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:
1:41 pm CST Feb 9, 2026
Forecast Valid:
2pm CST Feb 9, 2026-6pm CST Feb 15, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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