NWS St. Louis Announces Changes To May 16, 2025 Tornado Damage Assessment
After a year-long review of new ground survey data and aerial imagery, NWS St. Louis made several adjustments to the May 16, 2025 tornado damage assessment. Read More >
Hazardous Weather Conditions
Current conditions at
St. Charles, St. Charles County Smartt Airport (KSET)
Lat: 38.93°NLon: 90.43°WElev: 436ft.
Fair
62°F
17°C
| Humidity | 90% |
| Wind Speed | NE 3 mph |
| Barometer | 30.02 in (1016.3 mb) |
| Dewpoint | 59°F (15°C) |
| Visibility | 10.00 mi |
| Last update | 26 May 6:54 am CDT |
Extended Forecast for
4 Miles SSW Portage Des Sioux MO
Today
High: 82 °F
Mostly Cloudy
Tonight
Low: 64 °F
Mostly Cloudy
then Chance
ShowersWednesday
High: 83 °F
Slight Chance
Showers then
Chance
T-stormsWednesday Night
Low: 64 °F
Chance
T-storms then
Partly CloudyThursday
High: 85 °F
Partly Sunny
Thursday Night
Low: 64 °F
Mostly Cloudy
Friday
High: 80 °F
Mostly Cloudy
Friday Night
Low: 61 °F
Mostly Cloudy
Saturday
High: 81 °F
Mostly Sunny
Detailed Forecast
Today
Mostly cloudy, with a high near 82. Calm wind becoming east 5 to 8 mph in the afternoon.
Tonight
A slight chance of showers and thunderstorms, then a chance of showers after 1am. Mostly cloudy, with a low around 64. East wind around 6 mph becoming calm in the evening. Chance of precipitation is 30%.
Wednesday
A chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 83. Calm wind becoming northeast 5 to 7 mph in the afternoon. Chance of precipitation is 30%.
Wednesday Night
A chance of thunderstorms before 7pm. Increasing clouds, with a low around 64. Northeast wind around 6 mph becoming calm in the evening. Chance of precipitation is 30%.
Thursday
Partly sunny, with a high near 85. East wind 5 to 11 mph.
Thursday Night
Mostly cloudy, with a low around 64.
Friday
Mostly cloudy, with a high near 80.
Friday Night
Mostly cloudy, with a low around 61.
Saturday
Mostly sunny, with a high near 81.
Saturday Night
Partly cloudy, with a low around 60.
Sunday
Mostly sunny, with a high near 80.
Sunday Night
Partly cloudy, with a low around 59.
Monday
Mostly sunny, with a high near 82.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
4 Miles SSW Portage Des Sioux MO
38.87°N 90.36°W (Elev. 430 ft)
38.87°N 90.36°W (Elev. 430 ft)
7:26 am CDT May 26, 2026
7am CDT May 26, 2026-6pm CDT Jun 1, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
