The temperatures in Naperville in August are comfortable with low of 19°C and and high up to 27°C.
You can expect about 3 to 8 days of rain in Naperville during the month of August. 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 August 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
27° / 19°
Rainy Days
6
Snowy Days
0
Dry Days
25
Rainfall
103
mm
Sun Hours
11.1
Hrs
