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Winter Weather Preparedness Week: November 2nd - November 6th, 2026

Current conditions at

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

Lat: 38.93°NLon: 90.43°WElev: 436ft.

Overcast

54°F

12°C

Humidity	80%
Wind Speed	W 9 mph
Barometer	29.97 in (1014.8 mb)
Dewpoint	48°F (9°C)
Visibility	10.00 mi
Wind Chill	51°F (11°C)
Last update	5 Nov 7:54 pm CST

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

4 Miles W Grafton IL

Tonight
Low: 47 °F
Cloudy then
Slight Chance
Rain
Friday
High: 50 °F
Gradual
Clearing
Friday Night
Low: 34 °F
Mostly Clear
Saturday
High: 54 °F
Sunny
Saturday Night
Low: 35 °F
Mostly Clear
Sunday
High: 61 °F
Sunny
Sunday Night
Low: 40 °F
Clear
Monday
High: 66 °F
Sunny
Monday Night
Low: 44 °F
Clear

Detailed Forecast

Tonight

A slight chance of drizzle before midnight, then a slight chance of rain between midnight and 4am, then a slight chance of drizzle after 4am. Cloudy, with a low around 47. West wind 8 to 10 mph becoming north after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 20%.

Friday

Cloudy through mid morning, then gradual clearing, with a high near 50. North wind 7 to 11 mph.

Friday Night

Mostly clear, with a low around 34. North wind around 6 mph becoming calm in the evening.

Saturday

Sunny, with a high near 54. Light northwest wind.

Saturday Night

Mostly clear, with a low around 35. Calm wind.

Sunday

Sunny, with a high near 61.

Sunday Night

Clear, with a low around 40.