Current conditions at

St. Charles, St. Charles County Smartt Airport (KSET)

Lat: 38.93°NLon: 90.43°WElev: 436ft.

Fog/Mist

39°F

4°C

Humidity 96%
Wind Speed NE 3 mph
Barometer 30.46 in (1031.5 mb)
Dewpoint 38°F (3°C)
Visibility 1.50 mi
Last update 18 Oct 4:54 am CDT
Extended Forecast for

Carrollton IL

Frost Advisory until October 18, 09:00am
Click here for hazard details and duration
Frost Advisory
  •  
    Frost Advisory until October 18, 09:00am

    NOW until 9:00am Sun

    Frost Advisory

  • Overnight

    Low: 34 °F

    Patchy Frost

  • Sunday

    Sunday: Patchy frost before 8am.  Otherwise, sunny, with a high near 68. South wind 5 to 8 mph.

    High: 68 °F

    Patchy Frost
    then Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 37. Light southeast wind.

    Low: 37 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 70. Calm wind.

    High: 70 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 38. Calm wind.

    Low: 38 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 73.

    High: 73 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 41.

    Low: 41 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 77.

    High: 77 °F

    Sunny

Detailed Forecast

Overnight
Patchy frost. Otherwise, clear, with a low around 34. Southeast wind around 5 mph.
Sunday
Patchy frost before 8am. Otherwise, sunny, with a high near 68. South wind 5 to 8 mph.
Sunday Night
Clear, with a low around 37. Light southeast wind.
Monday
Sunny, with a high near 70. Calm wind.
Monday Night
Mostly clear, with a low around 38. Calm wind.
Tuesday
Sunny, with a high near 73.
Tuesday Night
Mostly clear, with a low around 41.
Wednesday
Sunny, with a high near 77.
Wednesday Night
Mostly clear, with a low around 44.
Thursday
Sunny, with a high near 81.
Thursday Night
Clear, with a low around 45.
Friday
Sunny, with a high near 80.
Friday Night
Mostly clear, with a low around 47.
Saturday
Mostly sunny, with a high near 80.
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ABOUT THIS FORECAST

 
Point Forecast:
Carrollton IL
 39.29°N 90.4°W (Elev. 568 ft)
3:16 am CDT Oct 18, 2026
5am CDT Oct 18, 2026-6pm CDT Oct 24, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

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