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

72°F

22°C

Humidity 53%
Wind Speed S 13 mph
Barometer 29.87 in (1010.9 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 30 Mar 10:54 pm CDT
Extended Forecast for

4 Miles SW Carrollton IL

  • Tonight

    Tonight: Partly cloudy, with a low around 63. South wind around 14 mph, with gusts as high as 25 mph.

    Low: 63 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 50 percent chance of rain and thunderstorms, mainly after 1pm. Partly sunny, with a high near 82. Southwest wind 14 to 18 mph, with gusts as high as 31 mph.

    High: 82 °F

    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Rain and thunderstorms before 2am, then rain likely and possibly a thunderstorm between 2am and 4am, then a chance of rain and thunderstorms after 4am. Low around 55. Southwest wind 8 to 10 mph becoming north after midnight. Chance of precipitation is 90%.

    Low: 55 °F

    T-storms then
    Rain

  • Wednesday

    Wednesday: A chance of rain and thunderstorms, then rain and possibly a thunderstorm after 7am. High near 68. East wind 9 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 90%.

    High: 68 °F

    Rain

  • Wednesday Night

    Wednesday Night: Rain likely and possibly a thunderstorm. Mostly cloudy, with a low around 57. East wind around 11 mph becoming south after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 70%.

    Low: 57 °F

    Rain Likely

  • Thursday

    Thursday: Rain and possibly a thunderstorm. High near 76. Chance of precipitation is 90%.

    High: 76 °F

    Rain

  • Thursday Night

    Thursday Night: Rain likely and possibly a thunderstorm before 1am, then a chance of rain. Mostly cloudy, with a low around 55. Chance of precipitation is 70%.

    Low: 55 °F

    Rain Likely

  • Friday

    Friday: A chance of rain, with thunderstorms also possible after 1pm. Partly sunny, with a high near 78. Chance of precipitation is 50%.

    High: 78 °F

    Chance Rain

  • Friday Night

    Friday Night: Rain likely and possibly a thunderstorm. Mostly cloudy, with a low around 54. Chance of precipitation is 70%.

    Low: 54 °F

    Rain Likely

Detailed Forecast

Tonight
Partly cloudy, with a low around 63. South wind around 14 mph, with gusts as high as 25 mph.
Tuesday
A 50 percent chance of rain and thunderstorms, mainly after 1pm. Partly sunny, with a high near 82. Southwest wind 14 to 18 mph, with gusts as high as 31 mph.
Tuesday Night
Rain and thunderstorms before 2am, then rain likely and possibly a thunderstorm between 2am and 4am, then a chance of rain and thunderstorms after 4am. Low around 55. Southwest wind 8 to 10 mph becoming north after midnight. Chance of precipitation is 90%.
Wednesday
A chance of rain and thunderstorms, then rain and possibly a thunderstorm after 7am. High near 68. East wind 9 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 90%.
Wednesday Night
Rain likely and possibly a thunderstorm. Mostly cloudy, with a low around 57. East wind around 11 mph becoming south after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 70%.
Thursday
Rain and possibly a thunderstorm. High near 76. Chance of precipitation is 90%.
Thursday Night
Rain likely and possibly a thunderstorm before 1am, then a chance of rain. Mostly cloudy, with a low around 55. Chance of precipitation is 70%.
Friday
A chance of rain, with thunderstorms also possible after 1pm. Partly sunny, with a high near 78. Chance of precipitation is 50%.
Friday Night
Rain likely and possibly a thunderstorm. Mostly cloudy, with a low around 54. Chance of precipitation is 70%.
Saturday
Rain likely and possibly a thunderstorm. Mostly cloudy, with a high near 66. Chance of precipitation is 60%.
Saturday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 38.
Sunday
A 20 percent chance of rain. Mostly sunny, with a high near 57.
Sunday Night
Mostly clear, with a low around 36.
Monday
Sunny, with a high near 62.
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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:
10:31 pm CDT Mar 30, 2026
Forecast Valid:
11pm CDT Mar 30, 2026-6pm CDT Apr 6, 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