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September 2025 Climate Summary

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Chicago / West Chicago, Dupage Airport (KDPA)

Lat: 41.9°NLon: 88.25°WElev: 758ft.

Overcast

75°F

24°C

Humidity	66%
Wind Speed	S 3 mph
Barometer	30.00 in (1015.6 mb)
Dewpoint	63°F (17°C)
Visibility	10.00 mi
Last update	6 Oct 5:52 pm CDT

More Information:

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

Extended Forecast for

Carpentersville IL

Tonight
Low: 55 °F
Showers
Likely
Tuesday
High: 67 °F
Chance
Showers then
Mostly Sunny
Tuesday Night
Low: 43 °F
Mostly Clear
Wednesday
High: 64 °F
Sunny
Wednesday Night
Low: 41 °F
Clear
Thursday
High: 65 °F
Sunny
Thursday Night
Low: 42 °F
Mostly Clear
Friday
High: 67 °F
Mostly Sunny
Friday Night
Low: 47 °F
Partly Cloudy

Detailed Forecast

Tonight

Showers and thunderstorms likely before midnight, then showers likely and possibly a thunderstorm between midnight and 1am, then showers likely after 1am. Mostly cloudy, with a low around 55. North wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

Tuesday

A 30 percent chance of showers before 10am. Cloudy through mid morning, then gradual clearing, with a high near 67. North wind around 10 mph, with gusts as high as 20 mph.

Tuesday Night

Mostly clear, with a low around 43. North northwest wind around 5 mph, with gusts as high as 10 mph.

Wednesday

Sunny, with a high near 64. East northeast wind around 5 mph, with gusts as high as 10 mph.

Wednesday Night

Clear, with a low around 41. East northeast wind around 5 mph becoming calm in the evening. Winds could gust as high as 10 mph.

Thursday

Sunny, with a high near 65.

Thursday Night

Mostly clear, with a low around 42.

Friday

Mostly sunny, with a high near 67.