Current conditions at
St. Charles, St. Charles County Smartt Airport (KSET)
Lat: 38.93°NLon: 90.43°WElev: 436ft.
Fair
38°F
3°C
| Humidity | 70% |
| Wind Speed | Calm |
| Barometer | 30.19 in (1022.3 mb) |
| Dewpoint | 29°F (-2°C) |
| Visibility | 10.00 mi |
| Last update | 13 Nov 12:54 am CST |
Extended Forecast for
Grafton IL
Overnight
Low: 37 °F
Partly Cloudy
Thursday
High: 64 °F
Mostly Sunny
Thursday Night
Low: 50 °F
Partly Cloudy
Friday
High: 75 °F
Mostly Sunny
Friday Night
Low: 58 °F
Partly Cloudy
Saturday
High: 77 °F
Mostly Sunny
Saturday Night
Low: 46 °F
Mostly Clear
Sunday
High: 60 °F
Sunny
Sunday Night
Low: 40 °F
Mostly Clear
Detailed Forecast
Overnight
Partly cloudy, with a low around 37. Light and variable wind.
Thursday
Mostly sunny, with a high near 64. Calm wind becoming south 5 to 9 mph in the morning.
Thursday Night
Partly cloudy, with a low around 50. South wind 5 to 7 mph.
Friday
Mostly sunny, with a high near 75. South wind 5 to 8 mph.
Friday Night
Partly cloudy, with a low around 58. South wind 6 to 8 mph.
Saturday
Mostly sunny, with a high near 77.
Saturday Night
Mostly clear, with a low around 46.
Sunday
Sunny, with a high near 60.
Sunday Night
Mostly clear, with a low around 40.
Monday
A 30 percent chance of rain after noon. Mostly sunny, with a high near 57.
Monday Night
Rain likely. Mostly cloudy, with a low around 44. Chance of precipitation is 60%.
Tuesday
A 20 percent chance of rain. Partly sunny, with a high near 57.
Tuesday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 41.
Wednesday
A 30 percent chance of rain. Partly sunny, with a high near 55.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Grafton IL
38.98°N 90.44°W (Elev. 515 ft)
38.98°N 90.44°W (Elev. 515 ft)
10:16 pm CST Nov 12, 2025
1am CST Nov 13, 2025-6pm CST Nov 19, 2025
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