Current conditions at
St. Charles, St. Charles County Smartt Airport (KSET)
Lat: 38.93°NLon: 90.43°WElev: 436ft.
Fair
42°F
6°C
| Humidity | 92% |
| Wind Speed | Calm |
| Barometer | 30.37 in (1028.3 mb) |
| Dewpoint | 40°F (4°C) |
| Visibility | 10.00 mi |
| Last update | 19 Oct 1:54 am CDT |
Extended Forecast for
4 Miles WSW Hardin IL
Overnight
Low: 42 °F
Clear
Monday
High: 71 °F
Patchy Fog
then SunnyMonday Night
Low: 46 °F
Partly Cloudy
Tuesday
High: 73 °F
Sunny
Tuesday Night
Low: 46 °F
Mostly Clear
Wednesday
High: 77 °F
Sunny
Wednesday Night
Low: 48 °F
Mostly Clear
Thursday
High: 78 °F
Sunny
Thursday Night
Low: 50 °F
Clear
Detailed Forecast
Overnight
Clear, with a low around 42. Calm wind.
Monday
Patchy fog before 8am. Otherwise, sunny, with a high near 71. Light south wind.
Monday Night
Partly cloudy, with a low around 46. Calm wind.
Tuesday
Sunny, with a high near 73. Calm wind.
Tuesday Night
Mostly clear, with a low around 46. Calm wind.
Wednesday
Sunny, with a high near 77.
Wednesday Night
Mostly clear, with a low around 48.
Thursday
Sunny, with a high near 78.
Thursday Night
Clear, with a low around 50.
Friday
Sunny, with a high near 77.
Friday Night
Partly cloudy, with a low around 51.
Saturday
Mostly sunny, with a high near 79.
Saturday Night
Mostly cloudy, with a low around 54.
Sunday
Mostly sunny, with a high near 79.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
4 Miles WSW Hardin IL
39.12°N 90.67°W (Elev. 525 ft)
39.12°N 90.67°W (Elev. 525 ft)
1:40 am CDT Oct 19, 2026
2am CDT Oct 19, 2026-6pm CDT Oct 25, 2026
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