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

44°F

7°C

Humidity 51%
Wind Speed S 5 mph
Barometer 29.89 in (1012.3 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Wind Chill41°F (5°C)
Last update 13 Jan 6:54 am CST
Extended Forecast for

4 Miles SW Carrollton IL

  • Today

    Today: Increasing clouds, with a high near 58. West wind 9 to 15 mph, with gusts as high as 26 mph.

    High: 58 °F

    Increasing
    Clouds

  • Tonight

    Tonight: A 30 percent chance of rain, mainly before 11pm. Mostly cloudy, with a low around 33. West wind 9 to 13 mph, with gusts as high as 23 mph.

    Low: 33 °F

    Chance Rain
    then Mostly
    Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, then gradually becoming sunny, with a temperature falling to around 30 by 5pm. North wind 14 to 18 mph, with gusts as high as 32 mph.

    High: 36 °F⇓

    Decreasing
    Clouds

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 16. Northwest wind 8 to 14 mph, with gusts as high as 24 mph.

    Low: 16 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 31. Northwest wind 6 to 8 mph becoming south in the afternoon.

    High: 31 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A 30 percent chance of snow, mainly before midnight. Mostly cloudy, with a temperature rising to around 32 by 4am.

    Low: 27 °F⇑

    Chance Snow

  • Friday

    Friday: Partly sunny, with a high near 41.

    High: 41 °F

    Partly Sunny

  • Friday Night

    Friday Night: A slight chance of rain and snow before midnight. Mostly cloudy, with a low around 19. Chance of precipitation is 20%.

    Low: 19 °F

    Slight Chance
    Rain/Snow
    then Mostly
    Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 27.

    High: 27 °F

    Partly Sunny

Detailed Forecast

Today
Increasing clouds, with a high near 58. West wind 9 to 15 mph, with gusts as high as 26 mph.
Tonight
A 30 percent chance of rain, mainly before 11pm. Mostly cloudy, with a low around 33. West wind 9 to 13 mph, with gusts as high as 23 mph.
Wednesday
Mostly cloudy, then gradually becoming sunny, with a temperature falling to around 30 by 5pm. North wind 14 to 18 mph, with gusts as high as 32 mph.
Wednesday Night
Mostly clear, with a low around 16. Northwest wind 8 to 14 mph, with gusts as high as 24 mph.
Thursday
Mostly sunny, with a high near 31. Northwest wind 6 to 8 mph becoming south in the afternoon.
Thursday Night
A 30 percent chance of snow, mainly before midnight. Mostly cloudy, with a temperature rising to around 32 by 4am.
Friday
Partly sunny, with a high near 41.
Friday Night
A slight chance of rain and snow before midnight. Mostly cloudy, with a low around 19. Chance of precipitation is 20%.
Saturday
Partly sunny, with a high near 27.
Saturday Night
Mostly cloudy, with a low around 7.
Sunday
Mostly sunny, with a high near 22.
Sunday Night
Partly cloudy, with a low around 10.
M.L.King Day
Mostly sunny, with a high near 31.
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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:
5:21 am CST Jan 13, 2026
Forecast Valid:
7am CST Jan 13, 2026-6pm CST Jan 19, 2026
 
Forecast Discussion
 
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Additional Resources

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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