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

52°F

11°C

Humidity 50%
Wind Speed N 10 mph
Barometer 30.33 in (1026.9 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill49°F (9°C)
Last update 6 Apr 8:54 am CDT
Extended Forecast for

4 Miles SW Carrollton IL

  • Today

    Today: Sunny, with a high near 59. Northwest wind 10 to 14 mph, with gusts as high as 21 mph.

    High: 59 °F

    Sunny

  • Tonight

    Tonight: A 40 percent chance of rain, mainly after 2am. Increasing clouds, with a low around 34. Northeast wind 8 to 13 mph, with gusts as high as 21 mph.

    Low: 34 °F

    Mostly Cloudy
    then Chance
    Rain

  • Tuesday

    Tuesday: A slight chance of rain and snow before 10am. Mostly cloudy, with a high near 50. East wind around 11 mph. Chance of precipitation is 20%.

    High: 50 °F

    Slight Chance
    Rain/Snow
    then Mostly
    Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 38. East wind around 10 mph, with gusts as high as 20 mph.

    Low: 38 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 71. Southeast wind 11 to 16 mph, with gusts as high as 26 mph.

    High: 71 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 53.

    Low: 53 °F

    Partly Cloudy

  • Thursday

    Thursday: A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 71. Chance of precipitation is 40%.

    High: 71 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 54.

    Low: 54 °F

    Chance
    T-storms

  • Friday

    Friday: A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 70. Chance of precipitation is 50%.

    High: 70 °F

    Chance
    Showers

Detailed Forecast

Today
Sunny, with a high near 59. Northwest wind 10 to 14 mph, with gusts as high as 21 mph.
Tonight
A 40 percent chance of rain, mainly after 2am. Increasing clouds, with a low around 34. Northeast wind 8 to 13 mph, with gusts as high as 21 mph.
Tuesday
A slight chance of rain and snow before 10am. Mostly cloudy, with a high near 50. East wind around 11 mph. Chance of precipitation is 20%.
Tuesday Night
Mostly cloudy, with a low around 38. East wind around 10 mph, with gusts as high as 20 mph.
Wednesday
Mostly sunny, with a high near 71. Southeast wind 11 to 16 mph, with gusts as high as 26 mph.
Wednesday Night
Partly cloudy, with a low around 53.
Thursday
A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 71. Chance of precipitation is 40%.
Thursday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 54.
Friday
A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 70. Chance of precipitation is 50%.
Friday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 53.
Saturday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 76.
Saturday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 59.
Sunday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 79.
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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:
7:36 am CDT Apr 6, 2026
Forecast Valid:
9am CDT Apr 6, 2026-6pm CDT Apr 12, 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