Current conditions at
St. Charles, St. Charles County Smartt Airport (KSET)
Lat: 38.93°NLon: 90.43°WElev: 436ft.
Fair
39°F
4°C
| Humidity | 82% |
| Wind Speed | Calm |
| Barometer | 30.17 in (1021.9 mb) |
| Dewpoint | 34°F (1°C) |
| Visibility | 10.00 mi |
| Last update | 2 Nov 7:54 pm CST |
Extended Forecast for
Grafton IL
Tonight
Low: 39 °F
Mostly Clear
Monday
High: 64 °F
Sunny
Monday Night
Low: 42 °F
Partly Cloudy
Tuesday
High: 70 °F
Mostly Sunny
Tuesday Night
Low: 53 °F
Partly Cloudy
Wednesday
High: 71 °F
Sunny
Wednesday Night
Low: 43 °F
Clear
Thursday
High: 66 °F
Sunny
Thursday Night
Low: 54 °F
Partly Cloudy
then Chance
Showers
Detailed Forecast
Tonight
Mostly clear, with a low around 39. South wind around 8 mph.
Monday
Sunny, with a high near 64. Southwest wind 5 to 8 mph becoming northwest in the afternoon.
Monday Night
Partly cloudy, with a low around 42. Calm wind becoming southeast around 5 mph after midnight.
Tuesday
Mostly sunny, with a high near 70. South wind 6 to 15 mph, with gusts as high as 26 mph.
Tuesday Night
Partly cloudy, with a low around 53. Southwest wind 9 to 11 mph.
Wednesday
Sunny, with a high near 71.
Wednesday Night
Clear, with a low around 43.
Thursday
Sunny, with a high near 66.
Thursday Night
A 40 percent chance of showers after midnight. Mostly cloudy, with a low around 54.
Friday
A 20 percent chance of showers before noon. Mostly sunny, with a high near 68.
Friday Night
Mostly clear, with a low around 45.
Saturday
Mostly sunny, with a high near 64.
Saturday Night
Partly cloudy, with a low around 43.
Sunday
Mostly sunny, with a high near 54.
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)
4:36 pm CST Nov 2, 2025
8pm CST Nov 2, 2025-6pm CST Nov 9, 2025
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