Hazardous Weather Conditions
Current conditions at
St. Charles, St. Charles County Smartt Airport (KSET)
Lat: 38.93°NLon: 90.43°WElev: 436ft.
Fair
35°F
2°C
| Humidity | 57% |
| Wind Speed | NE 7 mph |
| Barometer | 30.69 in (1039.4 mb) |
| Dewpoint | 21°F (-6°C) |
| Visibility | 10.00 mi |
| Wind Chill | 29°F (-2°C) |
| Last update | 28 Mar 8:54 am CDT |
Extended Forecast for
St. Charles County Smartt Airport MO
Today

High: 56 °F
Sunny
Tonight

Low: 40 °F
Partly Cloudy
Sunday

High: 70 °F
Partly Sunny
Sunday Night

Low: 53 °F
Partly Cloudy
Monday

High: 84 °F
Sunny
Monday Night

Low: 63 °F
Partly Cloudy
Tuesday
High: 83 °F
Chance Rain
then Rain
LikelyTuesday Night

Low: 43 °F
Rain
Wednesday

High: 56 °F
Chance Rain
Detailed Forecast
Today
Sunny, with a high near 56. East wind 5 to 9 mph becoming south in the afternoon.
Tonight
Partly cloudy, with a low around 40. South wind around 10 mph.
Sunday
Partly sunny, with a high near 70. South wind 8 to 14 mph, with gusts as high as 21 mph.
Sunday Night
Partly cloudy, with a low around 53. South wind around 11 mph.
Monday
Sunny, with a high near 84. South wind 10 to 17 mph, with gusts as high as 26 mph.
Monday Night
Partly cloudy, with a low around 63.
Tuesday
A chance of rain and thunderstorms, then rain likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 83. Chance of precipitation is 60%.
Tuesday Night
Rain and possibly a thunderstorm. Low around 43. Chance of precipitation is 90%.
Wednesday
A 50 percent chance of rain. Cloudy, with a high near 56.
Wednesday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 37.
Thursday
A 50 percent chance of rain. Mostly cloudy, with a high near 56.
Thursday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 41.
Friday
A 40 percent chance of rain. Mostly cloudy, with a high near 69.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
St. Charles County Smartt Airport MO
38.94°N 90.45°W (Elev. 427 ft)
38.94°N 90.45°W (Elev. 427 ft)
8:16 am CDT Mar 28, 2026
9am CDT Mar 28, 2026-6pm CDT Apr 3, 2026



