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

38°F

3°C

Humidity 62%
Wind Speed NW 7 mph
Barometer 30.28 in (1025.4 mb)
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Wind Chill33°F (1°C)
Last update 12 Mar 12:54 am CDT
Extended Forecast for

3 Miles SSE Carrollton IL

  • Overnight

    Overnight: Clear, with a low around 28. Northwest wind 6 to 10 mph.

    Low: 28 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 54. Light west wind becoming southwest 8 to 13 mph in the morning. Winds could gust as high as 20 mph.

    High: 54 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 42. South wind 13 to 18 mph, with gusts as high as 32 mph.

    Low: 42 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 57. West wind 11 to 16 mph, with gusts as high as 28 mph.

    High: 57 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 33. Northwest wind around 6 mph becoming northeast after midnight.

    Low: 33 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 59.

    High: 59 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: A 20 percent chance of rain and thunderstorms after 1am. Cloudy, with a low around 47.

    Low: 47 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Sunday

    Sunday: Rain likely and possibly a thunderstorm, then rain after 1pm. High near 64. Breezy. Chance of precipitation is 80%.

    High: 64 °F

    Rain and
    Breezy

  • Sunday Night

    Sunday Night: A chance of rain and snow before 1am. Mostly cloudy, with a low around 20. Blustery. Chance of precipitation is 30%.

    Low: 20 °F

    Chance
    Rain/Snow and
    Blustery

Detailed Forecast

Overnight
Clear, with a low around 28. Northwest wind 6 to 10 mph.
Thursday
Sunny, with a high near 54. Light west wind becoming southwest 8 to 13 mph in the morning. Winds could gust as high as 20 mph.
Thursday Night
Partly cloudy, with a low around 42. South wind 13 to 18 mph, with gusts as high as 32 mph.
Friday
Mostly sunny, with a high near 57. West wind 11 to 16 mph, with gusts as high as 28 mph.
Friday Night
Mostly cloudy, with a low around 33. Northwest wind around 6 mph becoming northeast after midnight.
Saturday
Mostly cloudy, with a high near 59.
Saturday Night
A 20 percent chance of rain and thunderstorms after 1am. Cloudy, with a low around 47.
Sunday
Rain likely and possibly a thunderstorm, then rain after 1pm. High near 64. Breezy. Chance of precipitation is 80%.
Sunday Night
A chance of rain and snow before 1am. Mostly cloudy, with a low around 20. Blustery. Chance of precipitation is 30%.
Monday
Partly sunny, with a high near 33. Breezy.
Monday Night
Mostly clear, with a low around 14.
Tuesday
Partly sunny, with a high near 41.
Tuesday Night
A slight chance of rain and snow. Mostly cloudy, with a low around 29. Chance of precipitation is 20%.
Wednesday
Partly sunny, with a high near 55.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSE Carrollton IL
 39.24°N 90.38°W (Elev. 466 ft)
Last Update:
10:31 pm CDT Mar 11, 2026
Forecast Valid:
1am CDT Mar 12, 2026-6pm CDT Mar 18, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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