Hazardous Weather Conditions

Current conditions at

St. Charles, St. Charles County Smartt Airport (KSET)

Lat: 38.93° N Lon: 90.43° W Elev: 436 ft.

Fair

54°F

12°C

Humidity 77%
Wind Speed Calm
Barometer 29.93 in (1013.3 mb)
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Last update 20 Mar 8:54 am CDT
Detailed forecast for

Jersey County

Rest Of Today
Sunny. Highs in the lower 80s. West winds 10 to 15 mph with gusts up to 25 mph.
Tonight
Partly cloudy in the evening, then clearing. Lows in the upper 40s. North winds 5 to 10 mph with gusts up to 20 mph, becoming northeast after midnight.
Saturday
Sunny. Highs around 80. Southeast winds around 5 mph, becoming southwest in the afternoon.
Saturday Night
Mostly clear. Not as cool with lows in the upper 50s. South winds 5 to 10 mph.
Sunday
Mostly sunny. Highs in the mid 80s. Southwest winds 10 to 15 mph, becoming west 15 to 20 mph in the afternoon.
Sunday Night
Partly cloudy. Much cooler with lows in the upper 30s.
Monday
Sunny. Much cooler with highs in the upper 50s.
Monday Night
Mostly clear in the evening, then becoming mostly cloudy. Lows in the upper 30s.
Tuesday Through Wednesday
Mostly cloudy. Highs in the lower 60s. Lows in the lower 40s.
Wednesday Night
Partly cloudy. Lows in the upper 40s.
Thursday
Sunny. A slight chance of showers in the afternoon. Not as cool with highs in the mid 70s. Chance of rain 20 percent.



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918 AM CDT Fri Mar 20 2026
 
 

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database