Current conditions at
St. Charles, St. Charles County Smartt Airport (KSET)
Lat: 38.93°NLon: 90.43°WElev: 436ft.
Overcast
57°F
14°C
| Humidity | 90% |
| Wind Speed | S 6 mph |
| Barometer | 29.99 in (1015.5 mb) |
| Dewpoint | 54°F (12°C) |
| Visibility | 10.00 mi |
| Last update | 5 Mar 5:54 pm CST |
Extended Forecast for
4 Miles E Portage Des Sioux MO
Tonight
Low: 55 °F
Chance
T-stormsFriday
High: 75 °F
Chance
T-stormsFriday Night
Low: 58 °F
Slight Chance
T-storms then
RainSaturday
High: 68 °F
Chance Rain
then Partly
SunnySaturday Night
Low: 39 °F
Partly Cloudy
Sunday
High: 67 °F
Sunny
Sunday Night
Low: 49 °F
Clear
Monday
High: 79 °F
Sunny
Monday Night
Low: 59 °F
Chance Rain
Detailed Forecast
Tonight
A 40 percent chance of rain and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 55. Calm wind becoming southeast 5 to 7 mph after midnight.
Friday
A 30 percent chance of rain and thunderstorms, mainly before 3pm. Partly sunny, with a high near 75. South wind 7 to 17 mph, with gusts as high as 28 mph.
Friday Night
A slight chance of rain and thunderstorms between 10pm and midnight, then rain and possibly a thunderstorm after midnight. Low around 58. South wind 11 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 90%.
Saturday
A chance of rain and thunderstorms before 9am, then a chance of rain between 9am and noon. Cloudy, then gradually becoming mostly sunny, with a high near 68. Southwest wind 10 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 22 mph. Chance of precipitation is 50%.
Saturday Night
Partly cloudy, with a low around 39. Northwest wind 5 to 8 mph becoming calm after midnight.
Sunday
Sunny, with a high near 67.
Sunday Night
Clear, with a low around 49.
Monday
Sunny, with a high near 79.
Monday Night
A slight chance of rain, then a chance of rain and thunderstorms after midnight. Partly cloudy, with a low around 59. Chance of precipitation is 30%.
Tuesday
Rain and possibly a thunderstorm. High near 80. Chance of precipitation is 80%.
Tuesday Night
Rain and possibly a thunderstorm. Low around 53. Chance of precipitation is 90%.
Wednesday
Rain likely. Mostly cloudy, with a high near 65. Chance of precipitation is 70%.
Wednesday Night
A 20 percent chance of rain. Partly cloudy, with a low around 35.
Thursday
Sunny, with a high near 55.
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)
5:10 pm CST Mar 5, 2026
6pm CST Mar 5, 2026-6pm CDT Mar 12, 2026
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