Weather in September 2025

Naperville weather in September 2025

The temperatures in Naperville in September are comfortable with low of 15°C and and high up to 24°C.

You can expect about 3 to 8 days of rain in Naperville during the month of September. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.

Our weather forecast can give you a great sense of what weather to expect in Naperville in September 2025.

If you’re planning to visit Naperville in the near future, we highly recommend that you review the 14 day weather forecast for Naperville before you arrive.

Temperatures
Temperatures
24° / 15°
Rainy Days
Rainy Days
4
Snowy Days
Snowy Days
0
Dry Days
Dry Days
26
Rainfall
Rainfall
69
mm
10.5
Sun Hours
10.5
Hrs

Naperville annual weather

Month Temperatures Rainy Days Dry Days Snowy Days Rainfall Weather More details
January -2° / -8° 5 12 14 44 mm
Awful
February -1° / -7° 3 12 13 49 mm
Awful
March 7° / 0° 6 18 7 60 mm
Bad
April 13° / 5° 6 21 3 86 mm
Bad
May 20° / 12° 7 24 0 112 mm
Ok
June 26° / 17° 7 23 0 121 mm
Good
July 28° / 20° 6 25 0 116 mm
Perfect
August 27° / 19° 6 25 0 103 mm
Perfect
September 24° / 15° 4 26 0 69 mm
Perfect
October 16° / 9° 5 25 0 71 mm
Good
November 8° / 2° 5 21 4 41 mm
Bad
December 2° / -3° 5 16 10 43 mm
Awful
Temperatures in Naperville in September
Rain in Naperville in September

Recommended Hotels in Naperville

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Weather in Naperville in September - FAQ

What is the average temperature in Naperville in September?
The average temperature in Naperville in September is 15/24° C.
What is the chance of rain in Naperville in September?
On average, there are 4 rainy days in Naperville during September.
Weather wise, is September a good time to visit Naperville?
The weather in Naperville in September is perfect.
Can it snow in Naperville in September?
On average, there are 0 snowy days in Naperville in September.
More about the weather in Naperville