Hazardous Weather Conditions
Current conditions at
St. Charles, St. Charles County Smartt Airport (KSET)
Lat: 38.93°NLon: 90.43°WElev: 436ft.
Fog/Mist
47°F
8°C
| Humidity | 93% |
| Wind Speed | Calm |
| Barometer | 30.09 in (1018.9 mb) |
| Dewpoint | 45°F (7°C) |
| Visibility | 4.00 mi |
| Last update | 4 Mar 7:54 am CST |
Extended Forecast for
4 Miles E Portage Des Sioux MO
Today
High: 60 °F
Chance
Showers and
Patchy Fog
then Showers
and Patchy
FogTonight

Low: 52 °F
Showers and
Patchy FogThursday
High: 66 °F
Chance
Showers and
Patchy Fog
then Slight
Chance
ShowersThursday Night
Low: 57 °F
Chance
Showers then
Showers
LikelyFriday

High: 79 °F
Chance
ShowersFriday Night
Low: 53 °F
Showers
Likely then
ShowersSaturday
High: 64 °F
Chance
Showers then
Mostly SunnySaturday Night

Low: 40 °F
Partly Cloudy
Sunday

High: 67 °F
Sunny
Detailed Forecast
Today
Showers and thunderstorms before 3pm, then showers and possibly a thunderstorm, mainly after 3pm. Patchy fog before 1pm. High near 60. Northeast wind around 6 mph becoming south in the afternoon. Chance of precipitation is 90%.
Tonight
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 1am. Patchy fog after 8pm. Low around 52. East wind around 6 mph becoming northwest after midnight. Chance of precipitation is 80%.
Thursday
A 50 percent chance of showers, mainly before noon. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 66. West wind 5 to 9 mph becoming light and variable in the afternoon.
Thursday Night
A chance of showers and thunderstorms before midnight, then showers likely and possibly a thunderstorm between midnight and 3am, then showers likely after 3am. Mostly cloudy, with a low around 57. South wind 3 to 8 mph. Chance of precipitation is 60%.
Friday
A 50 percent chance of showers. Partly sunny, with a high near 79. South wind 9 to 18 mph, with gusts as high as 28 mph.
Friday Night
Showers and possibly a thunderstorm. Low around 53. Chance of precipitation is 90%.
Saturday
A 40 percent chance of showers before noon. Partly sunny, with a high near 64.
Saturday Night
Partly cloudy, with a low around 40.
Sunday
Sunny, with a high near 67.
Sunday Night
Mostly clear, with a low around 48.
Monday
Sunny, with a high near 78.
Monday Night
A 30 percent chance of showers and thunderstorms. Mostly clear, with a low around 60.
Tuesday
Showers and thunderstorms likely. Mostly cloudy, with a high near 77. Chance of precipitation is 70%.
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)
4:36 am CST Mar 4, 2026
8am CST Mar 4, 2026-6pm CDT Mar 10, 2026



