Current conditions at

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

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

Fair

27°F

-3°C

Humidity 43%
Wind Speed NW 14 G 24 mph
Barometer 30.50 in (1033.3 mb)
Dewpoint 7°F (-14°C)
Visibility 10.00 mi
Wind Chill16°F (-9°C)
Last update 22 Feb 7:54 pm CST
Detailed forecast for

Greene County

Tonight
Partly cloudy this evening, then becoming mostly cloudy. Lows around 13. Northwest winds 15 to 20 mph with gusts up to 30 mph. Wind chill values as low as 1 below.
Monday
Sunny. Highs around 30. Northwest winds 10 to 15 mph with gusts up to 25 mph. Wind chill values as low as 1 below in the morning.
Monday Night
Mostly clear in the evening, then becoming partly cloudy. Lows around 19. West winds around 5 mph, becoming south with gusts up to 20 mph after midnight.
Tuesday
Mostly cloudy. Not as cool with highs in the lower 50s. South winds 15 to 20 mph with gusts up to 30 mph.
Tuesday Night
Mostly cloudy in the evening, then becoming partly cloudy. Not as cool with lows around 30. West winds 5 to 10 mph.
Wednesday
Mostly sunny. Highs in the lower 50s.
Wednesday Night
Rain likely. Lows in the lower 30s. Chance of rain 70 percent.
Thursday
Partly sunny with a slight chance of rain and snow in the morning, then sunny in the afternoon. Highs in the upper 40s. Chance of precipitation 20 percent.
Thursday Night
Mostly clear. Lows in the upper 20s.
Friday
Sunny. Not as cool with highs in the lower 60s.
Friday Night
Mostly clear. Lows in the mid 30s.
Saturday And Saturday Night
Partly cloudy. Highs around 60. Lows in the upper 20s.
Sunday
Partly sunny. A slight chance of rain and snow in the afternoon. Cooler with highs in the upper 40s. Chance of precipitation 20 percent.



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717 PM CST Sun Feb 22 2026
 
 

Additional Resources

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