Hazardous Weather Conditions
Current conditions at
St. Charles, St. Charles County Smartt Airport (KSET)
Lat: 38.93°NLon: 90.43°WElev: 436ft.
Fair
39°F
4°C
| Humidity | 93% |
| Wind Speed | Calm |
| Barometer | 30.47 in (1031.9 mb) |
| Dewpoint | 37°F (3°C) |
| Visibility | 10.00 mi |
| Last update | 18 Oct 5:54 am CDT |
Extended Forecast for
5 Miles S St. Charles County Smartt Airport MO
Frost Advisory until October 18, 09:00am
NOW until 9:00am Sun
Frost Advisory
Overnight
Low: 38 °F
Patchy Fog
Sunday
High: 69 °F
Patchy Fog
then SunnySunday Night
Low: 41 °F
Clear
Monday
High: 72 °F
Sunny
Monday Night
Low: 43 °F
Partly Cloudy
Tuesday
High: 75 °F
Sunny
Tuesday Night
Low: 44 °F
Mostly Clear
Wednesday
High: 77 °F
Sunny
Detailed Forecast
Overnight
Patchy fog. Otherwise, clear, with a low around 38. Light east wind.
Sunday
Patchy fog between 7am and 8am. Otherwise, sunny, with a high near 69. South wind 3 to 8 mph.
Sunday Night
Clear, with a low around 41. Southeast wind around 5 mph becoming calm in the evening.
Monday
Sunny, with a high near 72. Light and variable wind.
Monday Night
Partly cloudy, with a low around 43. Calm wind.
Tuesday
Sunny, with a high near 75.
Tuesday Night
Mostly clear, with a low around 44.
Wednesday
Sunny, with a high near 77.
Wednesday Night
Mostly clear, with a low around 47.
Thursday
Sunny, with a high near 81.
Thursday Night
Clear, with a low around 48.
Friday
Sunny, with a high near 81.
Friday Night
Mostly clear, with a low around 49.
Saturday
Mostly sunny, with a high near 81.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
Forecast AreaABOUT THIS FORECAST
Point Forecast:
5 Miles S St. Charles County Smartt Airport MO
38.87°N 90.42°W (Elev. 430 ft)
38.87°N 90.42°W (Elev. 430 ft)
5:26 am CDT Oct 18, 2026
5am CDT Oct 18, 2026-6pm CDT Oct 24, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
