Hazardous Weather Conditions
Current conditions at
St. Charles, St. Charles County Smartt Airport (KSET)
Lat: 38.93°NLon: 90.43°WElev: 436ft.
Fog/Mist
73°F
23°C
| Humidity | 90% |
| Wind Speed | Calm |
| Barometer | 29.88 in (1011.3 mb) |
| Dewpoint | 70°F (21°C) |
| Visibility | 4.00 mi |
| Last update | 17 Jun 7:54 am CDT |
Extended Forecast for
Grafton IL
Today
High: 88 °F
Mostly Sunny
Tonight
Low: 72 °F
Chance
T-stormsWednesday
High: 82 °F
T-storms
Wednesday Night
Low: 67 °F
Chance
T-storms then
Chance
ShowersJuneteenth
High: 84 °F
Sunny
Thursday Night
Low: 68 °F
Mostly Clear
Friday
High: 90 °F
Sunny
Friday Night
Low: 76 °F
Mostly Clear
Saturday
High: 94 °F
Sunny
Detailed Forecast
Today
Mostly sunny, with a high near 88. Calm wind becoming south around 5 mph in the afternoon.
Tonight
A 30 percent chance of showers and thunderstorms, mainly after 5am. Partly cloudy, with a low around 72. South wind around 7 mph.
Wednesday
Showers and thunderstorms. High near 82. Southwest wind 8 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 80%.
Wednesday Night
A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am. Mostly cloudy, with a low around 67. West wind 6 to 10 mph. Chance of precipitation is 30%.
Juneteenth
Sunny, with a high near 84. West wind around 6 mph.
Thursday Night
Mostly clear, with a low around 68.
Friday
Sunny, with a high near 90.
Friday Night
Mostly clear, with a low around 76.
Saturday
Sunny, with a high near 94.
Saturday Night
Clear, with a low around 77.
Sunday
Sunny, with a high near 94.
Sunday Night
Mostly clear, with a low around 76.
Monday
Sunny, with a high near 93.
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)
4:52 am CDT Jun 17, 2025
8am CDT Jun 17, 2025-6pm CDT Jun 23, 2025
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