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Current conditions at
St. Charles, St. Charles County Smartt Airport (KSET)
Lat: 38.93°NLon: 90.43°WElev: 436ft.
Mostly Cloudy
70°F
21°C
| Humidity | 90% |
| Wind Speed | N 8 mph |
| Barometer | 30.09 in (1018.4 mb) |
| Dewpoint | 67°F (19°C) |
| Visibility | 10.00 mi |
| Last update | 12 Jul 5:54 am CDT |
Extended Forecast for
Portage Des Sioux MO
Today
High: 87 °F
Patchy Fog
then SunnyTonight
Low: 67 °F
Clear
Monday
High: 89 °F
Sunny
Monday Night
Low: 68 °F
Clear
Tuesday
High: 91 °F
Sunny
Tuesday Night
Low: 72 °F
Mostly Clear
Wednesday
High: 93 °F
Sunny
Wednesday Night
Low: 73 °F
Mostly Clear
Thursday
High: 94 °F
Sunny
Detailed Forecast
Today
Patchy fog before 8am. Otherwise, sunny, with a high near 87. Northeast wind 6 to 10 mph.
Tonight
Clear, with a low around 67. Northeast wind 5 to 8 mph becoming calm in the evening.
Monday
Sunny, with a high near 89. Light north wind becoming northeast 5 to 9 mph in the morning.
Monday Night
Clear, with a low around 68. Northeast wind around 6 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 91. Calm wind becoming northeast 5 to 8 mph in the morning.
Tuesday Night
Mostly clear, with a low around 72.
Wednesday
Sunny, with a high near 93.
Wednesday Night
Mostly clear, with a low around 73.
Thursday
Sunny, with a high near 94.
Thursday Night
Mostly clear, with a low around 74.
Friday
Sunny, with a high near 94.
Friday Night
Mostly clear, with a low around 75.
Saturday
Sunny, with a high near 95.
Additional Forecasts and Information
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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)
5:52 am CDT Jul 12, 2026
6am CDT Jul 12, 2026-6pm CDT Jul 18, 2026
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