Hazardous Weather Conditions
Current conditions at
St. Charles, St. Charles County Smartt Airport (KSET)
Lat: 38.93°NLon: 90.43°WElev: 436ft.
Fog/Mist
39°F
4°C
| Humidity | 93% |
| Wind Speed | E 7 mph |
| Barometer | 30.18 in (1022.3 mb) |
| Dewpoint | 37°F (3°C) |
| Visibility | 4.00 mi |
| Wind Chill | 34°F (1°C) |
| Last update | 2 Mar 7:54 pm CST |
Extended Forecast for
3 Miles ENE Portage Des Sioux MO
Tonight
Low: 39 °F
Patchy Fog
then Rain and
Patchy FogTuesday

High: 58 °F
Rain
Tuesday Night

Low: 49 °F
Rain
Wednesday

High: 65 °F
Rain
Wednesday Night

Low: 54 °F
Rain
Thursday
High: 70 °F
Rain Likely
then Chance
RainThursday Night

Low: 54 °F
Chance Rain
Friday
High: 79 °F
Chance
T-storms then
Chance RainFriday Night
Low: 59 °F
Chance
T-storms then
Rain
Detailed Forecast
Tonight
A slight chance of rain before 3am, then a chance of rain and thunderstorms between 3am and 4am, then rain and possibly a thunderstorm after 4am. Patchy fog between 3am and 5am. Low around 39. East wind 5 to 7 mph. Chance of precipitation is 90%.
Tuesday
Rain and thunderstorms before 3pm, then rain and possibly a thunderstorm, mainly after 3pm. High near 58. East wind around 6 mph. Chance of precipitation is 100%.
Tuesday Night
Rain and possibly a thunderstorm. Low around 49. Northeast wind around 7 mph. Chance of precipitation is 90%.
Wednesday
Rain and possibly a thunderstorm. High near 65. Light and variable wind becoming south 5 to 7 mph in the morning. Chance of precipitation is 90%.
Wednesday Night
Rain and possibly a thunderstorm before midnight, then rain between midnight and 3am, then rain and possibly a thunderstorm after 3am. Low around 54. South wind around 6 mph. Chance of precipitation is 90%.
Thursday
Rain likely and possibly a thunderstorm before 9am, then rain likely between 9am and noon, then a chance of rain and thunderstorms after noon. Partly sunny, with a high near 70. Chance of precipitation is 70%.
Thursday Night
A chance of rain, with thunderstorms also possible after midnight. Mostly cloudy, with a low around 54. Chance of precipitation is 50%.
Friday
A chance of rain and thunderstorms. Partly sunny, with a high near 79. Chance of precipitation is 50%.
Friday Night
A chance of rain and thunderstorms, then rain and possibly a thunderstorm after midnight. Low around 59. Chance of precipitation is 80%.
Saturday
Rain likely and possibly a thunderstorm before noon, then a chance of rain and thunderstorms after noon. Cloudy, with a high near 69. Chance of precipitation is 70%.
Saturday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 47.
Sunday
A 20 percent chance of rain. Partly sunny, with a high near 65.
Sunday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 49.
Monday
A 30 percent chance of rain. Mostly sunny, with a high near 71.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
3 Miles ENE Portage Des Sioux MO
38.93°N 90.27°W (Elev. 407 ft)
38.93°N 90.27°W (Elev. 407 ft)
4:56 pm CST Mar 2, 2026
8pm CST Mar 2, 2026-6pm CDT Mar 9, 2026



