Current conditions at
St. Charles, St. Charles County Smartt Airport (KSET)
Lat: 38.93°NLon: 90.43°WElev: 436ft.
Fair
49°F
9°C
| Humidity | 86% |
| Wind Speed | SW 8 mph |
| Barometer | 29.88 in (1011.6 mb) |
| Dewpoint | 45°F (7°C) |
| Visibility | 10.00 mi |
| Wind Chill | 46°F (8°C) |
| Last update | 5 Nov 7:54 am CST |
Extended Forecast for
Grafton IL
Today
High: 58 °F
Increasing
CloudsTonight
Low: 45 °F
Slight Chance
Drizzle then
CloudyFriday
High: 54 °F
Becoming
SunnyFriday Night
Low: 33 °F
Mostly Clear
Saturday
High: 54 °F
Mostly Sunny
Saturday Night
Low: 35 °F
Mostly Clear
Sunday
High: 59 °F
Sunny
Sunday Night
Low: 38 °F
Clear
Monday
High: 65 °F
Sunny
Detailed Forecast
Today
Increasing clouds, with a high near 58. West wind 10 to 14 mph, with gusts as high as 22 mph.
Tonight
A slight chance of drizzle between 7pm and 10pm. Cloudy, with a low around 45. Northwest wind around 10 mph.
Friday
Mostly cloudy through mid morning, then gradual clearing, with a high near 54. North wind 8 to 13 mph.
Friday Night
Mostly clear, with a low around 33. North wind 5 to 7 mph becoming calm in the evening.
Saturday
Mostly sunny, with a high near 54. Light northwest wind.
Saturday Night
Mostly clear, with a low around 35.
Sunday
Sunny, with a high near 59.
Sunday Night
Clear, with a low around 38.
Monday
Sunny, with a high near 65.
Monday Night
Clear, with a low around 43.
Tuesday
Sunny, with a high near 66.
Tuesday Night
Mostly clear, with a low around 43.
Veterans Day
Mostly sunny, with a high near 65.
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)
5:57 am CST Nov 5, 2026
8am CST Nov 5, 2026-6pm CST Nov 11, 2026
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