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

49°F

9°C

Humidity 64%
Wind Speed NW 13 G 23 mph
Barometer 29.94 in (1013.6 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Wind Chill44°F (7°C)
Last update 18 Apr 7:54 am CDT
Extended Forecast for

3 Miles WNW Carrollton IL

  • Today

    Today: Partly sunny, then gradually becoming sunny, with a high near 56. Northwest wind 16 to 18 mph, with gusts as high as 26 mph.

    High: 56 °F

    Becoming
    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 38. Northwest wind 6 to 11 mph becoming southwest after midnight. Winds could gust as high as 21 mph.

    Low: 38 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 64. West wind 6 to 16 mph, with gusts as high as 26 mph.

    High: 64 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 36. North wind 5 to 9 mph becoming east after midnight.

    Low: 36 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 65. East wind 5 to 9 mph becoming south in the afternoon.

    High: 65 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 48.

    Low: 48 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 77.

    High: 77 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 56.

    Low: 56 °F

    Slight Chance
    T-storms

  • Wednesday

    Wednesday: Sunny, with a high near 79.

    High: 79 °F

    Sunny

Detailed Forecast

Today
Partly sunny, then gradually becoming sunny, with a high near 56. Northwest wind 16 to 18 mph, with gusts as high as 26 mph.
Tonight
Mostly clear, with a low around 38. Northwest wind 6 to 11 mph becoming southwest after midnight. Winds could gust as high as 21 mph.
Sunday
Sunny, with a high near 64. West wind 6 to 16 mph, with gusts as high as 26 mph.
Sunday Night
Mostly clear, with a low around 36. North wind 5 to 9 mph becoming east after midnight.
Monday
Sunny, with a high near 65. East wind 5 to 9 mph becoming south in the afternoon.
Monday Night
Mostly clear, with a low around 48.
Tuesday
Mostly sunny, with a high near 77.
Tuesday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 56.
Wednesday
Sunny, with a high near 79.
Wednesday Night
Mostly clear, with a low around 59.
Thursday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 83.
Thursday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 60. Chance of precipitation is 60%.
Friday
Showers and thunderstorms likely. Mostly cloudy, with a high near 76. Chance of precipitation is 70%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WNW Carrollton IL
 39.29°N 90.46°W (Elev. 607 ft)
Last Update:
5:41 am CDT Apr 18, 2026
Forecast Valid:
8am CDT Apr 18, 2026-6pm CDT Apr 24, 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