Current conditions at
St. Charles, St. Charles County Smartt Airport (KSET)
Lat: 38.93°NLon: 90.43°WElev: 436ft.
Fair
41°F
5°C
| Humidity | 55% |
| Wind Speed | E 14 mph |
| Barometer | 30.11 in (1019.8 mb) |
| Dewpoint | 26°F (-3°C) |
| Visibility | 10.00 mi |
| Wind Chill | 33°F (1°C) |
| Last update | 8 Feb 3:54 pm CST |
Extended Forecast for
3 Miles SSW Dow IL
Tonight

Low: 28 °F
Partly Cloudy
Monday
High: 53 °F
Patchy Fog
then Mostly
SunnyMonday Night

Low: 39 °F
Mostly Clear
Tuesday

High: 56 °F
Mostly Sunny
Tuesday Night

Low: 32 °F
Mostly Cloudy
Wednesday

High: 49 °F
Mostly Sunny
Wednesday Night

Low: 30 °F
Mostly Cloudy
Thursday
High: 44 °F
Mostly Cloudy
then Chance
RainThursday Night

Low: 31 °F
Chance Rain
Detailed Forecast
Tonight
Partly cloudy, with a low around 28. East wind 5 to 9 mph becoming light after midnight.
Monday
Patchy fog between 8am and 9am. Otherwise, mostly sunny, with a high near 53. Light and variable wind becoming south 5 to 7 mph in the afternoon.
Monday Night
Mostly clear, with a low around 39. South wind 7 to 9 mph becoming west after midnight.
Tuesday
Mostly sunny, with a high near 56. West wind 7 to 10 mph becoming north in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 32. North wind around 7 mph.
Wednesday
Mostly sunny, with a high near 49.
Wednesday Night
Mostly cloudy, with a low around 30.
Thursday
A 30 percent chance of rain after noon. Mostly cloudy, with a high near 44.
Thursday Night
A 40 percent chance of rain, mainly before midnight. Mostly cloudy, with a low around 31.
Friday
A 20 percent chance of rain. Partly sunny, with a high near 44.
Friday Night
A 30 percent chance of rain. Partly cloudy, with a low around 31.
Saturday
A 40 percent chance of rain. Partly sunny, with a high near 44.
Saturday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 32.
Sunday
A slight chance of rain and snow. Sunny, with a high near 49. Chance of precipitation is 20%.
Additional Forecasts and Information
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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)
12:26 pm CST Feb 8, 2026
3pm CST Feb 8, 2026-6pm CST Feb 15, 2026


