Current conditions at

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

Lat: 38.93°NLon: 90.43°WElev: 436ft.

Fair

39°F

4°C

Humidity 93%
Wind Speed Calm
Barometer 30.47 in (1031.9 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 18 Oct 5:54 am CDT
Extended Forecast for

Rockbridge IL

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

    NOW until 9:00am Sun

    Frost Advisory

  • Today

    High: 69 °F

    Frost then
    Sunny

  • Tonight

    Tonight: Clear, with a low around 36. Light southeast wind.

    Low: 36 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 71. Calm wind.

    High: 71 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 37. Calm wind.

    Low: 37 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 74. Calm wind.

    High: 74 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 40.

    Low: 40 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 78.

    High: 78 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 42.

    Low: 42 °F

    Mostly Clear

Detailed Forecast

Today
Widespread frost, mainly between 7am and 8am. Otherwise, sunny, with a high near 69. South wind 3 to 8 mph.
Tonight
Clear, with a low around 36. Light southeast wind.
Monday
Sunny, with a high near 71. Calm wind.
Monday Night
Mostly clear, with a low around 37. Calm wind.
Tuesday
Sunny, with a high near 74. Calm wind.
Tuesday Night
Mostly clear, with a low around 40.
Wednesday
Sunny, with a high near 78.
Wednesday Night
Mostly clear, with a low around 42.
Thursday
Sunny, with a high near 81.
Thursday Night
Clear, with a low around 44.
Friday
Sunny, with a high near 80.
Friday Night
Mostly clear, with a low around 45.
Saturday
Mostly sunny, with a high near 80.
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ABOUT THIS FORECAST

 
Point Forecast:
Rockbridge IL
 39.26°N 90.23°W (Elev. 502 ft)
5:26 am CDT Oct 18, 2026
6am 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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