Current conditions at
St. Charles, St. Charles County Smartt Airport (KSET)
Lat: 38.93°NLon: 90.43°WElev: 436ft.
Fair
80°F
27°C
| Humidity | 35% |
| Wind Speed | NW 9 mph |
| Barometer | 30.17 in (1021.5 mb) |
| Dewpoint | 50°F (10°C) |
| Visibility | 10.00 mi |
| Heat Index | 80°F (27°C) |
| Last update | 4 Oct 1:54 pm CDT |
Extended Forecast for
Grafton IL
This Afternoon
High: 79 °F
Sunny
Tonight
Low: 51 °F
Clear
Monday
High: 76 °F
Sunny
Monday Night
Low: 49 °F
Clear
Tuesday
High: 79 °F
Sunny
Tuesday Night
Low: 57 °F
Clear
Wednesday
High: 85 °F
Sunny
Wednesday Night
Low: 57 °F
Mostly Clear
Thursday
High: 83 °F
Sunny
Detailed Forecast
This Afternoon
Sunny, with a high near 79. North wind 7 to 9 mph.
Tonight
Clear, with a low around 51. North wind 6 to 8 mph.
Monday
Sunny, with a high near 76. Northeast wind around 6 mph.
Monday Night
Clear, with a low around 49. Northeast wind around 5 mph becoming light and variable in the evening.
Tuesday
Sunny, with a high near 79. South wind 5 to 8 mph.
Tuesday Night
Clear, with a low around 57.
Wednesday
Sunny, with a high near 85.
Wednesday Night
Mostly clear, with a low around 57.
Thursday
Sunny, with a high near 83.
Thursday Night
Mostly clear, with a low around 57.
Friday
Sunny, with a high near 84.
Friday Night
Mostly clear, with a low around 58.
Saturday
Sunny, with a high near 84.
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)
1:26 pm CDT Oct 4, 2026
2pm CDT Oct 4, 2026-6pm CDT Oct 10, 2026
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