Hazardous Weather Conditions
Current conditions at
St. Charles, St. Charles County Smartt Airport (KSET)
Lat: 38.93°NLon: 90.43°WElev: 436ft.
Fair
81°F
27°C
| Humidity | 47% |
| Wind Speed | SW 18 G 30 mph |
| Barometer | 29.79 in (1008.2 mb) |
| Dewpoint | 59°F (15°C) |
| Visibility | 10.00 mi |
| Heat Index | 81°F (27°C) |
| Last update | 26 Mar 10:54 am CDT |
Extended Forecast for
St. Charles County Smartt Airport MO
Today
High: 93 °F
Sunny and
BreezyTonight
Low: 39 °F
Breezy.
T-storms
Likely then
T-stormsFriday
High: 55 °F
Chance
Showers then
Mostly SunnyFriday Night
Low: 28 °F
Mostly Clear
Saturday
High: 56 °F
Sunny
Saturday Night
Low: 41 °F
Mostly Cloudy
Sunday
High: 69 °F
Mostly Cloudy
Sunday Night
Low: 53 °F
Partly Cloudy
Monday
High: 82 °F
Slight Chance
T-storms
Detailed Forecast
Today
Sunny, with a high near 93. Breezy, with a southwest wind 14 to 21 mph, with gusts as high as 30 mph.
Tonight
Showers and thunderstorms likely before 1am, then showers and possibly a thunderstorm between 1am and 4am, then a chance of showers after 4am. Low around 39. Breezy, with a southwest wind 9 to 14 mph becoming north 17 to 22 mph in the evening. Winds could gust as high as 33 mph. Chance of precipitation is 90%.
Friday
A 30 percent chance of showers, mainly before 7am. Cloudy through mid morning, then gradual clearing, with a high near 55. North wind 14 to 17 mph, with gusts as high as 28 mph.
Friday Night
Mostly clear, with a low around 28. North wind 5 to 14 mph.
Saturday
Sunny, with a high near 56. Calm wind becoming southeast 5 to 9 mph in the morning.
Saturday Night
Mostly cloudy, with a low around 41.
Sunday
Mostly cloudy, with a high near 69.
Sunday Night
Partly cloudy, with a low around 53.
Monday
A 20 percent chance of rain and thunderstorms before 1pm. Mostly sunny, with a high near 82.
Monday Night
A 30 percent chance of rain and thunderstorms, mainly after 1am. Partly cloudy, with a low around 59.
Tuesday
A 40 percent chance of rain and thunderstorms. Partly sunny, with a high near 84.
Tuesday Night
A 40 percent chance of rain and thunderstorms. Mostly cloudy, with a low around 59.
Wednesday
A 50 percent chance of rain and thunderstorms. Partly sunny, with a high near 79.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
Forecast AreaABOUT THIS FORECAST
Point Forecast:
St. Charles County Smartt Airport MO
38.94°N 90.45°W (Elev. 427 ft)
38.94°N 90.45°W (Elev. 427 ft)
11:26 am CDT Mar 26, 2026
11am CDT Mar 26, 2026-6pm CDT Apr 1, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
