Current conditions at
St. Charles, St. Charles County Smartt Airport (KSET)
Lat: 38.93°NLon: 90.43°WElev: 436ft.
Fair
67°F
19°C
| Humidity | 76% |
| Wind Speed | S 12 mph |
| Barometer | 29.80 in (1008.9 mb) |
| Dewpoint | 59°F (15°C) |
| Visibility | 10.00 mi |
| Last update | 9 Mar 10:54 pm CDT |
Extended Forecast for
4 Miles E Portage Des Sioux MO
Tonight
Low: 60 °F
Mostly Clear
Tuesday
High: 82 °F
Partly Sunny
Tuesday Night
Low: 54 °F
Slight Chance
T-storms then
T-stormsWednesday
High: 63 °F⇓
Showers
Wednesday Night
Low: 33 °F
Mostly Cloudy
Thursday
High: 55 °F
Sunny
Thursday Night
Low: 44 °F
Mostly Cloudy
Friday
High: 63 °F
Mostly Cloudy
Friday Night
Low: 39 °F
Mostly Cloudy
Detailed Forecast
Tonight
Mostly clear, with a low around 60. South wind 8 to 11 mph.
Tuesday
Partly sunny, with a high near 82. South wind 8 to 16 mph, with gusts as high as 24 mph.
Tuesday Night
Rain and thunderstorms likely, then rain and possibly a thunderstorm after 4am. Low around 54. South wind 11 to 14 mph, with gusts as high as 26 mph. Chance of precipitation is 80%.
Wednesday
Rain and possibly a thunderstorm before 10am, then showers, mainly between 10am and 1pm. Temperature rising to near 63 by 10am, then falling to around 49 during the remainder of the day. Southwest wind 11 to 18 mph becoming northwest in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 90%.
Wednesday Night
Mostly cloudy, with a low around 33. Northwest wind 12 to 17 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 25 mph.
Thursday
Sunny, with a high near 55.
Thursday Night
Mostly cloudy, with a low around 44.
Friday
Mostly cloudy, with a high near 63.
Friday Night
Mostly cloudy, with a low around 39.
Saturday
Mostly sunny, with a high near 70.
Saturday Night
A 20 percent chance of rain. Partly cloudy, with a low around 50.
Sunday
A 50 percent chance of rain. Mostly cloudy, with a high near 65. Breezy.
Sunday Night
A chance of rain and snow. Partly cloudy, with a low around 27. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 41.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
4 Miles E Portage Des Sioux MO
38.93°N 90.27°W (Elev. 407 ft)
38.93°N 90.27°W (Elev. 407 ft)
7:21 pm CDT Mar 9, 2026
11pm CDT Mar 9, 2026-6pm CDT Mar 16, 2026
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