Average data for 10 years
1 September
Sunday
+25°
+21°
2 September
Monday
+26°
+20°
3 September
Tuesday
+24°
+19°
4 September
Wednesday
+23°
+19°
5 September
Thursday
+24°
+18°
6 September
Friday
+25°
+19°
7 September
Saturday
+23°
+19°
8 September
Sunday
+23°
+18°
9 September
Monday
+23°
+18°
10 September
Tuesday
+22°
+18°
11 September
Wednesday
+23°
+16°
12 September
Thursday
+22°
+17°
13 September
Friday
+22°
+16°
14 September
Saturday
+21°
+17°
15 September
Sunday
+20°
+16°
16 September
Monday
+23°
+16°
17 September
Tuesday
+23°
+17°
18 September
Wednesday
+21°
+17°
19 September
Thursday
+24°
+16°
20 September
Friday
+23°
+19°
21 September
Saturday
+22°
+17°
22 September
Sunday
+23°
+17°
23 September
Monday
+21°
+18°
24 September
Tuesday
+21°
+17°
25 September
Wednesday
+22°
+17°
26 September
Thursday
+21°
+16°
27 September
Friday
+21°
+15°
28 September
Saturday
+18°
+16°
29 September
Sunday
+17°
+14°
30 September
Monday
+17°
+12°
Cities with similar weather in September
Georgia
Tbilisi
Bulgaria
Burgas
Turkey
Ankara
Bulgaria
Varna
Italy
Florence
In September, the weather in Naperville is typically warm. Average daily high temperature in September is about 22 degrees above zero. On average, Naperville has 17 sunny, 8 partly cloudy, and 5 rainy days in September. The rains are usually light. September as well as August is considered the most comfortable time to visit Naperville.