Hazardous Weather Conditions
Current conditions at
St. Charles, St. Charles County Smartt Airport (KSET)
Lat: 38.93°NLon: 90.43°WElev: 436ft.
Fair
52°F
11°C
| Humidity | 34% |
| Wind Speed | S 10 mph |
| Barometer | 30.03 in (1017.0 mb) |
| Dewpoint | 24°F (-4°C) |
| Visibility | 10.00 mi |
| Wind Chill | 49°F (9°C) |
| Last update | 12 Mar 5:54 pm CDT |
Extended Forecast for
4 Miles E Portage Des Sioux MO
Tonight
Low: 44 °F
Partly Cloudy
then Partly
Cloudy and
BreezyFriday

High: 59 °F
Mostly Sunny
Friday Night

Low: 36 °F
Partly Cloudy
Saturday

High: 64 °F
Partly Sunny
Saturday Night

Low: 54 °F
Mostly Cloudy
Sunday
High: 69 °F
Breezy. Rain
Likely then
RainSunday Night

Low: 20 °F
Rain/Snow and
BreezyMonday

High: 28 °F
Slight Chance
Snow and
BlusteryMonday Night

Low: 12 °F
Mostly Clear
Detailed Forecast
Tonight
Partly cloudy, with a low around 44. Breezy, with a south wind 11 to 21 mph, with gusts as high as 34 mph.
Friday
Mostly sunny, with a high near 59. West wind 13 to 17 mph, with gusts as high as 28 mph.
Friday Night
Partly cloudy, with a low around 36. Northwest wind around 6 mph becoming light and variable.
Saturday
Partly sunny, with a high near 64. Southeast wind 6 to 13 mph, with gusts as high as 20 mph.
Saturday Night
Mostly cloudy, with a low around 54. South wind 10 to 13 mph, with gusts as high as 22 mph.
Sunday
Rain and possibly a thunderstorm. High near 69. Breezy. Chance of precipitation is 90%.
Sunday Night
Rain and snow before 1am, then a chance of snow. Some thunder is also possible. Low around 20. Breezy. Chance of precipitation is 80%.
Monday
A 20 percent chance of snow before 1pm. Partly sunny, with a high near 28. Blustery.
Monday Night
Mostly clear, with a low around 12.
Tuesday
Mostly sunny, with a high near 34.
Tuesday Night
A chance of rain and snow. Mostly cloudy, with a low around 26. Chance of precipitation is 30%.
Wednesday
Partly sunny, with a high near 55.
Wednesday Night
Partly cloudy, with a low around 37.
Thursday
Sunny, with a high near 67.
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)
5:41 pm CDT Mar 12, 2026
6pm CDT Mar 12, 2026-6pm CDT Mar 19, 2026



