Current conditions at
St. Charles, St. Charles County Smartt Airport (KSET)
Lat: 38.93°NLon: 90.43°WElev: 436ft.
Fair
68°F
20°C
| Humidity | 76% |
| Wind Speed | SW 6 mph |
| Barometer | 29.94 in (1013.4 mb) |
| Dewpoint | 60°F (16°C) |
| Visibility | 10.00 mi |
| Last update | 13 Apr 3:54 am CDT |
Extended Forecast for
3 Miles SSW Dow IL
Today

High: 85 °F
Mostly Sunny
Tonight

Low: 68 °F
Partly Cloudy
Tuesday
High: 87 °F
Slight Chance
Showers then
Chance
T-stormsTuesday Night

Low: 68 °F
Chance
T-stormsWednesday

High: 79 °F
Showers
Wednesday Night

Low: 62 °F
Showers
Thursday

High: 82 °F
Chance
ShowersThursday Night

Low: 61 °F
Mostly Clear
Friday
High: 86 °F
Mostly Sunny
then Chance
T-storms
Detailed Forecast
Today
Mostly sunny, with a high near 85. South wind 10 to 18 mph.
Tonight
Partly cloudy, with a low around 68. South wind 13 to 17 mph, with gusts as high as 30 mph.
Tuesday
A slight chance of showers before 10am, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 87. Southwest wind 11 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 30%.
Tuesday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 68. South wind 13 to 15 mph, with gusts as high as 24 mph.
Wednesday
Showers and possibly a thunderstorm. High near 79. Southwest wind 10 to 15 mph, with gusts as high as 22 mph. Chance of precipitation is 80%.
Wednesday Night
Showers and possibly a thunderstorm. Low around 62. Chance of precipitation is 80%.
Thursday
A chance of showers, with thunderstorms also possible after 7am. Mostly sunny, with a high near 82. Chance of precipitation is 30%.
Thursday Night
Mostly clear, with a low around 61.
Friday
A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 86.
Friday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 59. Chance of precipitation is 80%.
Saturday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 72.
Saturday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 42.
Sunday
Sunny, with a high near 63.
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)
1:26 am CDT Apr 13, 2026
4am CDT Apr 13, 2026-6pm CDT Apr 19, 2026


