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Current conditions at
St. Charles, St. Charles County Smartt Airport (KSET)
Lat: 38.93°NLon: 90.43°WElev: 436ft.
Fair
17°F
-8°C
| Humidity | 64% |
| Wind Speed | N 7 mph |
| Barometer | 30.14 in (1021.2 mb) |
| Dewpoint | 7°F (-14°C) |
| Visibility | 10.00 mi |
| Wind Chill | 7°F (-14°C) |
| Last update | 15 Jan 7:54 am CST |
Extended Forecast for
3 Miles SSW Dow IL
Today

High: 34 °F
Increasing
CloudsTonight
Low: 29 °F
Chance Snow
then Mostly
CloudyFriday

High: 43 °F
Partly Sunny
Friday Night

Low: 20 °F
Scattered
Snow ShowersSaturday

High: 24 °F
Partly Sunny
Saturday Night

Low: 11 °F
Mostly Clear
Sunday

High: 26 °F
Mostly Sunny
Sunday Night

Low: 14 °F
Partly Cloudy
M.L.King Day

High: 23 °F
Sunny
Detailed Forecast
Today
Increasing clouds, with a high near 34. Northwest wind 6 to 8 mph becoming south in the afternoon.
Tonight
A chance of snow before midnight, then scattered flurries after 5am. Mostly cloudy, with a low around 29. South wind 8 to 11 mph becoming west after midnight. Chance of precipitation is 50%.
Friday
Partly sunny, with a high near 43. West wind 13 to 17 mph, with gusts as high as 26 mph.
Friday Night
Scattered snow showers. Mostly cloudy, with a low around 20. West wind 11 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 40%.
Saturday
Partly sunny, with a high near 24. West wind 14 to 17 mph, with gusts as high as 25 mph.
Saturday Night
Mostly clear, with a low around 11.
Sunday
Mostly sunny, with a high near 26.
Sunday Night
Partly cloudy, with a low around 14.
M.L.King Day
Sunny, with a high near 23.
Monday Night
Mostly clear, with a low around 9.
Tuesday
Sunny, with a high near 29.
Tuesday Night
Partly cloudy, with a low around 19.
Wednesday
Mostly sunny, with a high near 43.
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)
6:21 am CST Jan 15, 2026
8am CST Jan 15, 2026-6pm CST Jan 21, 2026


