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 and Breezy

77°F

25°C

Humidity 28%
Wind Speed S 21 G 29 mph
Barometer 30.08 in (1018.3 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 8 Apr 2:54 pm CDT
Extended Forecast for

3 Miles WNW Carrollton IL

  • Tonight

    Tonight: Mostly clear, with a low around 54. South wind 9 to 15 mph, with gusts as high as 24 mph.

    Low: 54 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 78. Southwest wind 8 to 10 mph.

    High: 78 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A chance of showers between 1am and 4am, then a chance of showers and thunderstorms after 4am. Increasing clouds, with a low around 57. South wind 6 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.

    Low: 57 °F

    Partly Cloudy
    then Chance
    Showers

  • Friday

    Friday: Showers and possibly a thunderstorm before 4pm, then showers likely. High near 66. Southwest wind around 10 mph becoming north in the afternoon. Chance of precipitation is 80%.

    High: 66 °F

    Showers

  • Friday Night

    Friday Night: A 40 percent chance of showers. Mostly cloudy, with a low around 48. East wind around 7 mph.

    Low: 48 °F

    Chance
    Showers

  • Saturday

    Saturday: A 30 percent chance of showers and thunderstorms, mainly before 1pm. Mostly cloudy, with a high near 70.

    High: 70 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 59.

    Low: 59 °F

    Mostly Cloudy

  • Sunday

    Sunday: A 40 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 77.

    High: 77 °F

    Mostly Cloudy
    then Chance
    Showers

  • Sunday Night

    Sunday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 64.

    Low: 64 °F

    Chance
    T-storms

Detailed Forecast

Tonight
Mostly clear, with a low around 54. South wind 9 to 15 mph, with gusts as high as 24 mph.
Thursday
Mostly sunny, with a high near 78. Southwest wind 8 to 10 mph.
Thursday Night
A chance of showers between 1am and 4am, then a chance of showers and thunderstorms after 4am. Increasing clouds, with a low around 57. South wind 6 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Friday
Showers and possibly a thunderstorm before 4pm, then showers likely. High near 66. Southwest wind around 10 mph becoming north in the afternoon. Chance of precipitation is 80%.
Friday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 48. East wind around 7 mph.
Saturday
A 30 percent chance of showers and thunderstorms, mainly before 1pm. Mostly cloudy, with a high near 70.
Saturday Night
Mostly cloudy, with a low around 59.
Sunday
A 40 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 77.
Sunday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 64.
Monday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 83.
Monday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 65. Chance of precipitation is 60%.
Tuesday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 79. Chance of precipitation is 70%.
Tuesday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 51. Chance of precipitation is 60%.
Wednesday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 66.
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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:
2:41 pm CDT Apr 8, 2026
Forecast Valid:
4pm CDT Apr 8, 2026-6pm CDT Apr 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