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Current conditions at
St. Charles, St. Charles County Smartt Airport (KSET)
Lat: 38.93°NLon: 90.43°WElev: 436ft.
Fair
80°F
27°C
| Humidity | 45% |
| Wind Speed | NE 3 mph |
| Barometer | 30.14 in (1020.3 mb) |
| Dewpoint | 57°F (14°C) |
| Visibility | 10.00 mi |
| Heat Index | 80°F (27°C) |
| Last update | 23 Jun 3:54 pm CDT |
Extended Forecast for
5 Miles N Grafton IL
Tonight

Low: 62 °F
Partly Cloudy
Wednesday

High: 82 °F
Chance
T-stormsWednesday Night

Low: 65 °F
Slight Chance
T-stormsThursday
High: 84 °F
Chance
T-storms then
T-storms
LikelyThursday Night

Low: 66 °F
T-storms
Friday

High: 82 °F
T-storms
Friday Night

Low: 68 °F
Chance
T-stormsSaturday

High: 88 °F
Slight Chance
T-stormsSaturday Night

Low: 71 °F
Slight Chance
T-storms
Detailed Forecast
Tonight
Partly cloudy, with a low around 62. Light and variable wind becoming southeast around 5 mph after midnight.
Wednesday
A slight chance of showers and thunderstorms before noon, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 82. South wind 5 to 7 mph becoming southwest in the afternoon. Chance of precipitation is 30%.
Wednesday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 65. Light southwest wind.
Thursday
Showers and thunderstorms likely, mainly after 1pm. Partly sunny, with a high near 84. Light south wind. Chance of precipitation is 70%.
Thursday Night
Showers and thunderstorms. Low around 66. Southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 80%.
Friday
Showers and thunderstorms. High near 82. Chance of precipitation is 80%.
Friday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 68.
Saturday
A 20 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 88.
Saturday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 71.
Sunday
Sunny, with a high near 94.
Sunday Night
Mostly clear, with a low around 75.
Monday
Sunny, with a high near 96.
Monday Night
Mostly clear, with a low around 76.
Tuesday
Sunny, with a high near 95.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
5 Miles N Grafton IL
39.05°N 90.44°W (Elev. 594 ft)
39.05°N 90.44°W (Elev. 594 ft)
9:46 am CDT Jun 23, 2026
4pm CDT Jun 23, 2026-6pm CDT Jun 30, 2026


