Hazardous Weather Conditions
Current conditions at
St. Charles, St. Charles County Smartt Airport (KSET)
Lat: 38.93°NLon: 90.43°WElev: 436ft.
Fog/Mist
40°F
4°C
| Humidity | 97% |
| Wind Speed | Calm |
| Barometer | 30.46 in (1031.3 mb) |
| Dewpoint | 39°F (4°C) |
| Visibility | 2.00 mi |
| Last update | 18 Oct 3:54 am CDT |
Extended Forecast for
3 Miles SSW Dow IL
Frost Advisory until October 18, 09:00am
NOW until 9:00am Sun
Frost Advisory
Overnight
Low: 36 °F
Clear
Sunday
High: 68 °F
Patchy Frost
and Patchy
Fog then
SunnySunday Night
Low: 40 °F
Clear
Monday
High: 71 °F
Sunny
Monday Night
Low: 41 °F
Mostly Clear
Tuesday
High: 74 °F
Sunny
Tuesday Night
Low: 43 °F
Mostly Clear
Wednesday
High: 77 °F
Sunny
Detailed Forecast
Overnight
Clear, with a low around 36. Southeast wind around 5 mph.
Sunday
Patchy fog between 7am and 8am. Patchy frost before 8am. Otherwise, sunny, with a high near 68. South wind 5 to 9 mph.
Sunday Night
Clear, with a low around 40. Southeast wind around 5 mph becoming calm in the evening.
Monday
Sunny, with a high near 71. Light southeast wind.
Monday Night
Mostly clear, with a low around 41. Calm wind.
Tuesday
Sunny, with a high near 74.
Tuesday Night
Mostly clear, with a low around 43.
Wednesday
Sunny, with a high near 77.
Wednesday Night
Mostly clear, with a low around 47.
Thursday
Sunny, with a high near 81.
Thursday Night
Clear, with a low around 47.
Friday
Sunny, with a high near 80.
Friday Night
Mostly clear, with a low around 48.
Saturday
Sunny, with a high near 80.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
3 Miles SSW Dow IL
39°N 90.33°W (Elev. 597 ft)
39°N 90.33°W (Elev. 597 ft)
3:16 am CDT Oct 18, 2026
4am CDT Oct 18, 2026-6pm CDT Oct 24, 2026
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