Current conditions at
St. Charles, St. Charles County Smartt Airport (KSET)
Lat: 38.93°NLon: 90.43°WElev: 436ft.
Fair
42°F
6°C
| Humidity | 73% |
| Wind Speed | E 8 mph |
| Barometer | 30.26 in (1024.7 mb) |
| Dewpoint | 34°F (1°C) |
| Visibility | 10.00 mi |
| Wind Chill | 37°F (3°C) |
| Last update | 8 Apr 12:54 am CDT |
Extended Forecast for
4 Miles E Portage Des Sioux MO
Overnight

Low: 41 °F
Mostly Cloudy
Wednesday

High: 75 °F
Mostly Sunny
Wednesday Night

Low: 56 °F
Mostly Clear
Thursday

High: 80 °F
Mostly Sunny
Thursday Night
Low: 59 °F
Partly Cloudy
then Chance
ShowersFriday

High: 71 °F
Showers
LikelyFriday Night
Low: 53 °F
Chance
T-storms then
Chance
ShowersSaturday

High: 73 °F
Chance
ShowersSaturday Night

Low: 59 °F
Partly Cloudy
Detailed Forecast
Overnight
Mostly cloudy, with a low around 41. Southeast wind around 9 mph.
Wednesday
Mostly sunny, with a high near 75. South wind 9 to 17 mph, with gusts as high as 30 mph.
Wednesday Night
Mostly clear, with a low around 56. South wind 8 to 14 mph.
Thursday
Mostly sunny, with a high near 80. Southwest wind 7 to 10 mph.
Thursday Night
A 30 percent chance of showers after 1am. Mostly cloudy, with a low around 59. South wind 6 to 9 mph.
Friday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 71. Chance of precipitation is 70%.
Friday Night
A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 4am, then a chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 53. Chance of precipitation is 50%.
Saturday
A chance of showers and thunderstorms before 7am, then a chance of showers between 7am and 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 73. Chance of precipitation is 30%.
Saturday Night
Partly cloudy, with a low around 59.
Sunday
A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 81.
Sunday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 65.
Monday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 83. Breezy.
Monday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 65. Chance of precipitation is 60%.
Tuesday
Showers and thunderstorms likely. Partly sunny, with a high near 81. Chance of precipitation is 60%.
Additional Forecasts and Information
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ABOUT 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)
1:25 am CDT Apr 8, 2026
1am CDT Apr 8, 2026-6pm CDT Apr 14, 2026


