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Current conditions at
St. Charles, St. Charles County Smartt Airport (KSET)
Lat: 38.93°NLon: 90.43°WElev: 436ft.
Overcast
32°F
0°C
| Humidity | 66% |
| Wind Speed | N 14 mph |
| Barometer | 30.24 in (1024.2 mb) |
| Dewpoint | 22°F (-6°C) |
| Visibility | 10.00 mi |
| Wind Chill | 22°F (-6°C) |
| Last update | 3 Feb 4:54 pm CST |
Extended Forecast for
Grafton IL
Tonight
Low: 20 °F
Mostly Cloudy
Wednesday
High: 30 °F
Partly Sunny
Wednesday Night
Low: 15 °F
Mostly Clear
Thursday
High: 40 °F
Partly Sunny
Thursday Night
Low: 33 °F
Mostly Clear
Friday
High: 48 °F
Sunny
Friday Night
Low: 24 °F
Mostly Clear
Saturday
High: 40 °F
Sunny
Saturday Night
Low: 30 °F
Partly Cloudy
Detailed Forecast
Tonight
Mostly cloudy, with a low around 20. North wind 3 to 6 mph.
Wednesday
Partly sunny, with a high near 30. North wind 3 to 7 mph.
Wednesday Night
Mostly clear, with a low around 15. Light and variable wind.
Thursday
Partly sunny, with a high near 40. Light southwest wind increasing to 5 to 9 mph in the morning.
Thursday Night
Mostly clear, with a low around 33. South wind 7 to 10 mph becoming west after midnight.
Friday
Sunny, with a high near 48.
Friday Night
Mostly clear, with a low around 24.
Saturday
Sunny, with a high near 40.
Saturday Night
Partly cloudy, with a low around 30.
Sunday
Mostly sunny, with a high near 45.
Sunday Night
Partly cloudy, with a low around 26.
Monday
Mostly sunny, with a high near 47.
Monday Night
Mostly cloudy, with a low around 34.
Tuesday
Partly sunny, with a high near 53.
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)
5:07 pm CST Feb 3, 2026
5pm CST Feb 3, 2026-6pm CST Feb 10, 2026
Additional Resources
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