Current conditions at

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

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

Fair

32°F

0°C

Humidity 35%
Wind Speed SE 12 mph
Barometer 30.21 in (1023.6 mb)
Dewpoint 7°F (-14°C)
Visibility 10.00 mi
Wind Chill23°F (-5°C)
Last update 20 Jan 5:54 pm CST
Detailed forecast for

Calhoun County

Tonight
Mostly cloudy. A chance of flurries after midnight. Not as cool. Near steady temperature in the upper 20s. South winds 10 to 15 mph with gusts up to 25 mph.
Wednesday
Mostly sunny. Highs in the upper 30s. West winds 10 to 15 mph with gusts up to 25 mph.
Wednesday Night
Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 20s. West winds 10 to 15 mph, becoming northwest after midnight. Gusts up to 30 mph.
Thursday
Partly sunny in the morning, then becoming mostly cloudy. Highs in the lower 30s. Northwest winds around 5 mph.
Thursday Night
Mostly cloudy. Much cooler with lows around 5 above. North winds 10 to 15 mph. Wind chill values as low as 9 below after midnight.
Friday
Mostly cloudy and much cooler. Near steady temperature around 10 above. Wind chill values as low as 15 below.
Friday Night
Mostly cloudy. A slight chance of snow after midnight. Cold with lows around zero. Chance of snow 20 percent. Wind chill values as low as 20 below.
Saturday
Cloudy. A slight chance of snow in the morning, then a chance of snow in the afternoon. Highs 10 to 15. Chance of snow 40 percent. Wind chill values as low as 20 below.
Saturday Night
Mostly cloudy. A chance of snow, mainly in the evening. Cold with lows around 5 above. Chance of snow 40 percent. Wind chill values as low as 5 below after midnight.
Sunday
Partly sunny. Highs around 20. Wind chill values as low as 5 below in the morning.
Sunday Night And Monday
Partly cloudy. Lows zero to 5 above zero. Highs in the lower 20s. Wind chill values as low as 10 below.
Monday Night
Mostly clear. Lows around 10 above.
Tuesday
Mostly sunny. Not as cool with highs in the mid 30s. Wind chill values as low as 5 below in the morning.



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633 PM CST Tue Jan 20 2026
 
 

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