Current conditions at
St. Charles, St. Charles County Smartt Airport (KSET)
Lat: 38.93°NLon: 90.43°WElev: 436ft.
Fair
81°F
27°C
| Humidity | 33% |
| Wind Speed | NW 10 mph |
| Barometer | 30.16 in (1020.8 mb) |
| Dewpoint | 49°F (9°C) |
| Visibility | 10.00 mi |
| Heat Index | 80°F (27°C) |
| Last update | 4 Oct 2:54 pm CDT |
Extended Forecast for
Portage Des Sioux MO
Tonight
Low: 51 °F
Clear
Monday
High: 77 °F
Sunny
Monday Night
Low: 48 °F
Clear
Tuesday
High: 81 °F
Sunny
Tuesday Night
Low: 57 °F
Clear
Wednesday
High: 87 °F
Sunny
Wednesday Night
Low: 57 °F
Mostly Clear
Thursday
High: 85 °F
Sunny
Thursday Night
Low: 57 °F
Mostly Clear
Detailed Forecast
Tonight
Clear, with a low around 51. North wind 5 to 8 mph.
Monday
Sunny, with a high near 77. Northeast wind 3 to 6 mph.
Monday Night
Clear, with a low around 48. Northeast wind around 5 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 81. Light and variable wind becoming south 5 to 8 mph in the morning.
Tuesday Night
Clear, with a low around 57. South wind 3 to 5 mph.
Wednesday
Sunny, with a high near 87.
Wednesday Night
Mostly clear, with a low around 57.
Thursday
Sunny, with a high near 85.
Thursday Night
Mostly clear, with a low around 57.
Friday
Sunny, with a high near 85.
Friday Night
Mostly clear, with a low around 58.
Saturday
Sunny, with a high near 86.
Saturday Night
A 20 percent chance of showers. Partly cloudy, with a low around 60.
Sunday
Mostly sunny, with a high near 85.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
Forecast AreaABOUT THIS FORECAST
Point Forecast:
Portage Des Sioux MO
38.93°N 90.33°W (Elev. 407 ft)
38.93°N 90.33°W (Elev. 407 ft)
1:26 pm CDT Oct 4, 2026
3pm CDT Oct 4, 2026-6pm CDT Oct 11, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
