News Headlines
Current conditions at
St. Charles, St. Charles County Smartt Airport (KSET)
Lat: 38.93°NLon: 90.43°WElev: 436ft.
Fair
74°F
23°C
| Humidity | 69% |
| Wind Speed | Calm |
| Barometer | 30.00 in (1015.6 mb) |
| Dewpoint | 63°F (17°C) |
| Visibility | 10.00 mi |
| Last update | 19 Jun 8:54 pm CDT |
Extended Forecast for
5 Miles WNW Grafton IL
Tonight
Low: 65 °F
Partly Cloudy
then Chance
ShowersSaturday
High: 84 °F
Chance
Showers then
Mostly SunnySaturday Night
Low: 67 °F
Slight Chance
Showers then
Chance
ShowersSunday

High: 79 °F
T-storms
Sunday Night

Low: 64 °F
T-storms
Monday

High: 76 °F
Partly Sunny
Monday Night

Low: 60 °F
Partly Cloudy
Tuesday

High: 78 °F
Mostly Sunny
Tuesday Night
Low: 62 °F
Partly Cloudy
then Slight
Chance
Showers
Detailed Forecast
Tonight
A 30 percent chance of showers, mainly after 5am. Mostly cloudy, with a low around 65. Calm wind.
Saturday
A 30 percent chance of showers, mainly before 7am. Mostly cloudy, then gradually becoming sunny, with a high near 84. Light northeast wind.
Saturday Night
A chance of showers, with thunderstorms also possible after 3am. Mostly cloudy, with a low around 67. East wind 3 to 7 mph. Chance of precipitation is 50%.
Sunday
Showers likely and possibly a thunderstorm, then showers and thunderstorms after 7am. High near 79. Southeast wind 8 to 11 mph becoming southwest in the afternoon. Winds could gust as high as 24 mph. Chance of precipitation is 100%.
Sunday Night
Showers and thunderstorms, mainly before 1am. Low around 64. West wind 9 to 11 mph becoming northwest after midnight. Chance of precipitation is 80%.
Monday
Partly sunny, with a high near 76.
Monday Night
Partly cloudy, with a low around 60.
Tuesday
Mostly sunny, with a high near 78.
Tuesday Night
A 20 percent chance of showers after 1am. Partly cloudy, with a low around 62.
Wednesday
Mostly sunny, with a high near 81.
Wednesday Night
Mostly clear, with a low around 62.
Thursday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 80.
Thursday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 62.
Friday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 81.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
ABOUT THIS FORECAST
Point Forecast:
5 Miles WNW Grafton IL
39°N 90.5°W (Elev. 801 ft)
39°N 90.5°W (Elev. 801 ft)
8:16 pm CDT Jun 19, 2026
9pm CDT Jun 19, 2026-6pm CDT Jun 26, 2026


