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.

Overcast

61°F

16°C

Humidity 58%
Wind Speed E 8 mph
Barometer 30.33 in (1026.8 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 11 Apr 11:54 am CDT
Extended Forecast for

4 Miles SW Carrollton IL

  • This Afternoon

    This Afternoon: A slight chance of showers before 2pm, then a slight chance of showers after 4pm. Partly sunny, with a high near 72. Southeast wind around 10 mph. Chance of precipitation is 20%.

    High: 72 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: Mostly cloudy, with a low around 59. Southeast wind around 10 mph, with gusts as high as 20 mph.

    Low: 59 °F

    Mostly Cloudy

  • Sunday

    Sunday: A slight chance of showers before 1pm, then a slight chance of showers and thunderstorms between 1pm and 4pm, then a chance of showers after 4pm. Partly sunny, with a high near 80. South wind 10 to 18 mph, with gusts as high as 31 mph. Chance of precipitation is 30%.

    High: 80 °F

    Mostly Sunny
    then Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers, then showers and possibly a thunderstorm after 7pm. Low around 62. Southwest wind around 14 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.

    Low: 62 °F

    Showers

  • Monday

    Monday: A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 84. Southwest wind 11 to 15 mph, with gusts as high as 25 mph.

    High: 84 °F

    Chance
    T-storms

  • Monday Night

    Monday Night: Partly cloudy, with a low around 67.

    Low: 67 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 86.

    High: 86 °F

    Mostly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 66. Chance of precipitation is 60%.

    Low: 66 °F

    Chance
    T-storms then
    Showers
    Likely

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 79. Chance of precipitation is 70%.

    High: 79 °F

    Showers
    Likely

Detailed Forecast

This Afternoon
A slight chance of showers before 2pm, then a slight chance of showers after 4pm. Partly sunny, with a high near 72. Southeast wind around 10 mph. Chance of precipitation is 20%.
Tonight
Mostly cloudy, with a low around 59. Southeast wind around 10 mph, with gusts as high as 20 mph.
Sunday
A slight chance of showers before 1pm, then a slight chance of showers and thunderstorms between 1pm and 4pm, then a chance of showers after 4pm. Partly sunny, with a high near 80. South wind 10 to 18 mph, with gusts as high as 31 mph. Chance of precipitation is 30%.
Sunday Night
A chance of showers, then showers and possibly a thunderstorm after 7pm. Low around 62. Southwest wind around 14 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.
Monday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 84. Southwest wind 11 to 15 mph, with gusts as high as 25 mph.
Monday Night
Partly cloudy, with a low around 67.
Tuesday
A 40 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 86.
Tuesday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 66. Chance of precipitation is 60%.
Wednesday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 79. Chance of precipitation is 70%.
Wednesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 62. Chance of precipitation is 70%.
Thursday
Showers and thunderstorms likely. Partly sunny, with a high near 77. Chance of precipitation is 60%.
Thursday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 59.
Friday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 80.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SW Carrollton IL
 39.25°N 90.46°W (Elev. 600 ft)
Last Update:
12:06 pm CDT Apr 11, 2026
Forecast Valid:
12pm CDT Apr 11, 2026-6pm CDT Apr 17, 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