World Resorts USA Naperville Weather

Naperville weather in September

Weather in Naperville: September

Average day temperature: 75.9°F
Average night temperature: 61.8°F
Number of sunny days: 18 days
Day length: 11.8 - 13.1 hours
Number of rainy days: 1 day
Precipitation totals: 0.8 in.

Air temperature in September, °F

Show year:
2024
2023
2022

The highest day temperature during September of 2024 was 89°F. At the same time the lowest night temperature was 47°F. Day and night temperature averages during September were 78.2°F and 61.1°F.

Sunny, partly cloudy and cloudy days

Mostly all days in September are sunny but cloudy days are also possible.

Precipitation total in September, in.

Precipitation total value in Naperville in September is 0.8 in. Other months of the year show relatively similar values.

Wind speed in September, mph

The average wind speed value in September is 7.5 mph It makes September one of the least windy months of the year.

Average sunny hours

This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in September is: 8.9.

Best time for vacation in Naperville

Sunniest months:
September 18 days
August 16 days
June 15 days
Warmest months:
July 81.0 °F
August 80.9 °F
June 78.5 °F
Coldest months:
January 29.4 °F
February 32.7 °F
December 37.6 °F
Rainiest months:
June 3 days
July 3 days
August 3 days
Windiest months:
March 10.2 mph
April 9.9 mph
February 9.3 mph

Naperville on a weather map

Naperville
+32°F
E 19 mph
Feels like: +19°F
Precip.: 0%
Places in USA:
Name
°F
+48°F
+50°F
+75°F
+75°F
+59°F
+70°F
+77°F
+70°F
+46°F
+63°F
+57°F
+73°F
+72°F
+66°F
+34°F
24 Hours Forecast
Naperville
Local time: 13:18
November 21, thursday
1500
34°F
SE
23 mph
1800
36°F
SE
24 mph
2100
37°F
S
13 mph
November 22, friday
0000
39°F
SE
10 mph
0300
39°F
SE
10 mph
0600
39°F
SE
12 mph
0900
39°F
SE
14 mph
1200
39°F
SE
15 mph
Units of measurement: °C / °F