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

76°F

24°C

Humidity 69%
Wind Speed N 3 mph
Barometer 29.94 in (1013.4 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 18 Sep 7:54 pm CDT
Detailed forecast for

Jersey County

Tonight
Partly cloudy this evening, then becoming mostly cloudy. Isolated showers and thunderstorms. Lows in the mid 60s. East winds around 5 mph, becoming north around 5 mph after midnight. Chance of rain 20 percent.
Friday
Mostly cloudy in the morning, then becoming partly sunny. Isolated showers. Isolated thunderstorms in the afternoon. Cooler with highs in the lower 80s. Northwest winds around 5 mph, becoming southwest around 5 mph in the afternoon. Chance of rain 20 percent.
Friday Night
Partly cloudy with a chance of showers. A chance of thunderstorms, mainly in the evening. Lows in the lower 60s. Southwest winds around 5 mph in the evening, becoming light and variable. Chance of rain 50 percent.
Saturday
Mostly sunny. Highs in the mid 80s. South winds around 5 mph.
Saturday Night
Mostly cloudy. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight. Lows in the mid 60s. South winds around 5 mph. Chance of rain 40 percent.
Sunday
Mostly cloudy with a chance of showers. A slight chance of thunderstorms in the morning, then a chance of thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 50 percent.
Sunday Night
Showers likely with a chance of thunderstorms. Lows in the lower 60s. Chance of rain 70 percent.
Monday
Partly sunny. A chance of showers with a slight chance of thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 50 percent.
Monday Night And Tuesday
Mostly cloudy with a chance of showers and thunderstorms. Lows in the mid 60s. Highs in the upper 70s. Chance of rain 40 percent.
Tuesday Night
Mostly cloudy with a slight chance of thunderstorms. A chance of showers, mainly in the evening. Lows in the lower 60s. Chance of rain 40 percent.
Wednesday
Partly sunny. A slight chance of showers in the morning, then a chance of showers in the afternoon. Highs in the mid 70s. Chance of rain 30 percent.
Wednesday Night
Mostly cloudy in the evening, then becoming partly cloudy. A 20 percent chance of showers. Lows in the upper 50s.
Thursday
Mostly sunny. A slight chance of showers in the morning, then a chance of showers in the afternoon. Highs in the upper 70s. Chance of rain 30 percent.



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728 PM CDT Thu Sep 18 2025
 
 

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