Current conditions at
St. Charles, St. Charles County Smartt Airport (KSET)
Lat: 38.93°NLon: 90.43°WElev: 436ft.
Fair
73°F
23°C
| Humidity | 37% |
| Wind Speed | S 5 mph |
| Barometer | 30.09 in (1018.8 mb) |
| Dewpoint | 45°F (7°C) |
| Visibility | 10.00 mi |
| Last update | 6 Oct 11:54 am CDT |
Extended Forecast for
Grafton IL
This Afternoon
High: 80 °F
Sunny
Tonight
Low: 57 °F
Mostly Clear
Wednesday
High: 88 °F
Sunny
Wednesday Night
Low: 56 °F
Mostly Clear
Thursday
High: 82 °F
Sunny
Thursday Night
Low: 55 °F
Mostly Clear
Friday
High: 85 °F
Sunny
Friday Night
Low: 60 °F
Clear
Saturday
High: 89 °F
Sunny
Detailed Forecast
This Afternoon
Sunny, with a high near 80. South wind around 8 mph.
Tonight
Mostly clear, with a low around 57. South wind around 6 mph.
Wednesday
Sunny, with a high near 88. West wind 6 to 10 mph.
Wednesday Night
Mostly clear, with a low around 56. North wind 3 to 6 mph.
Thursday
Sunny, with a high near 82. North wind 3 to 6 mph.
Thursday Night
Mostly clear, with a low around 55.
Friday
Sunny, with a high near 85.
Friday Night
Clear, with a low around 60.
Saturday
Sunny, with a high near 89.
Saturday Night
A 20 percent chance of showers after 1am. Partly cloudy, with a low around 62.
Sunday
A 30 percent chance of showers. Mostly sunny, with a high near 83.
Sunday Night
Partly cloudy, with a low around 61.
Columbus Day
Mostly sunny, with a high near 86.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Grafton IL
38.98°N 90.42°W (Elev. 673 ft)
38.98°N 90.42°W (Elev. 673 ft)
10:46 am CDT Oct 6, 2026
12pm CDT Oct 6, 2026-6pm CDT Oct 12, 2026
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