Current conditions at
St. Charles, St. Charles County Smartt Airport (KSET)
Lat: 38.93°NLon: 90.43°WElev: 436ft.
Fog/Mist
28°F
-2°C
| Humidity | 96% |
| Wind Speed | Calm |
| Barometer | 29.98 in (1015.5 mb) |
| Dewpoint | 27°F (-3°C) |
| Visibility | 4.00 mi |
| Last update | 6 Dec 7:54 am CST |
Extended Forecast for
3 Miles SSW Dow IL
Today

High: 41 °F
Partly Sunny
Tonight

Low: 31 °F
Chance Rain
Sunday
High: 38 °F⇓
Slight Chance
Rain then
Mostly CloudySunday Night

Low: 14 °F
Mostly Cloudy
Monday

High: 30 °F
Mostly Sunny
Monday Night

Low: 21 °F
Partly Cloudy
Tuesday

High: 47 °F
Mostly Sunny
Tuesday Night

Low: 35 °F
Mostly Cloudy
Wednesday
High: 42 °F
Slight Chance
Rain then
Partly Sunny
Detailed Forecast
Today
Partly sunny, with a high near 41. Calm wind becoming southeast around 6 mph in the afternoon.
Tonight
A 30 percent chance of rain, mainly between 10pm and 1am. Cloudy, with a low around 31. Southeast wind 6 to 8 mph.
Sunday
A 20 percent chance of rain before noon. Mostly cloudy, with a temperature falling to around 28 by 5pm. South wind 6 to 14 mph becoming north in the afternoon. Winds could gust as high as 21 mph.
Sunday Night
Mostly cloudy, with a low around 14. North wind 6 to 10 mph.
Monday
Mostly sunny, with a high near 30. North wind around 6 mph becoming light and variable.
Monday Night
Partly cloudy, with a low around 21.
Tuesday
Mostly sunny, with a high near 47.
Tuesday Night
Mostly cloudy, with a low around 35.
Wednesday
A 20 percent chance of rain before noon. Partly sunny, with a high near 42.
Wednesday Night
Mostly cloudy, with a low around 24.
Thursday
A chance of rain and snow. Mostly cloudy, with a high near 35. Chance of precipitation is 30%.
Thursday Night
Mostly cloudy, with a low around 19.
Friday
Partly sunny, with a high near 27.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
ABOUT THIS FORECAST
Point Forecast:
3 Miles SSW Dow IL
39°N 90.33°W (Elev. 597 ft)
39°N 90.33°W (Elev. 597 ft)
6:16 am CST Dec 6, 2025
8am CST Dec 6, 2025-6pm CST Dec 12, 2025


