Naperville
July
Weather in Naperville for July 2025
Your guide to Naperville weather in July - trends and predictions
In general, the average temperature in Naperville at the beginning of July is 26.4 °F. As the month progressed, temperatures tended to noticeably warm up, reaching an average of 29.1 °F by the end of July.
The climate of Naperville in July is notably wet, with an average of 15 rainy days.
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16
Dry days
15
Rainy days
0
Snow days
28°/17°
Temperatures
15 km/h
Avg max wind
72 %
Avg humidity
Naperville in July average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  26° | 2  24° | 3  28° | 4 28° | 5 27° | 6 25° | |
| 7 27° | 8 24° | 9 27° | 10  28° | 11 28° | 12 26° | 13 27° |
| 14 31° | 15  28° | 16 28° | 17 24° | 18 24° | 19  27° | 20 27° |
| 21 27° | 22 27° | 23 28° | 24 27° | 25 29° | 26 29° | 27 30° |
| 28 28° | 29 28° | 30 30° | 31 30° |
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Temperatures trend during July in Naperville
See the weather trend as well as the moving average line
July weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Jul. 1 | Patchy rain possible | 26° /15° | 2.5 mm | 6 | |
| Jul. 2 | Moderate or heavy rain shower | 24° /16° | 21.9 mm | 6 | |
| Jul. 3 | Overcast | 28° /17° | 7.8 mm | 6 | |
| Jul. 4 | Patchy rain possible | 28° /17° | 2.7 mm | 6 | |
| Jul. 5 | Moderate or heavy rain shower | 27° /19° | 10.3 mm | 6 | |
| Jul. 6 | Patchy rain possible | 25° /16° | 0.9 mm | 6 | |
| Jul. 7 | Patchy rain possible | 27° /15° | 2.5 mm | 6 | |
| Jul. 8 | Moderate or heavy rain shower | 24° /17° | 5.6 mm | 6 | |
| Jul. 9 | Overcast | 27° /16° | 0.1 mm | 6 | |
| Jul. 10 | Sunny | 28° /16° | 3.7 mm | 7 | |
| Jul. 11 | Moderate or heavy rain shower | 28° /17° | 12 mm | 7 | |
| Jul. 12 | Moderate or heavy rain shower | 26° /16° | 20.2 mm | 6 | |
| Jul. 13 | Patchy rain possible | 27° /17° | 1.5 mm | 6 | |
| Jul. 14 | Overcast | 31° /19° | 0.2 mm | 7 | |
| Jul. 15 | Heavy rain at times | 28° /21° | 11.8 mm | 6 | |
| Jul. 16 | Overcast | 28° /18° | 7.9 mm | 6 | |
| Jul. 17 | Overcast | 24° /15° | 0.8 mm | 6 | |
| Jul. 18 | Overcast | 24° /13° | 0 mm | 6 | |
| Jul. 19 | Partly cloudy | 27° /14° | 0 mm | 7 | |
| Jul. 20 | Overcast | 27° /17° | 0.1 mm | 6 | |
| Jul. 21 | Overcast | 27° /17° | 0 mm | 6 | |
| Jul. 22 | Overcast | 27° /17° | 1.6 mm | 6 | |
| Jul. 23 | Moderate rain at times | 28° /16° | 3.6 mm | 6 | |
| Jul. 24 | Overcast | 27° /18° | 0.7 mm | 6 | |
| Jul. 25 | Partly cloudy | 29° /17° | 0 mm | 8 | |
| Jul. 26 | Moderate rain at times | 29° /18° | 2 mm | 7 | |
| Jul. 27 | Partly cloudy | 30° /17° | 0 mm | 8 | |
| Jul. 28 | Moderate or heavy rain shower | 28° /20° | 10.7 mm | 6 | |
| Jul. 29 | Patchy rain possible | 28° /19° | 2.5 mm | 6 | |
| Jul. 30 | Partly cloudy | 30° /20° | 0.2 mm | 7 | |
| Jul. 31 | Overcast | 30° /17° | 9.6 mm | 7 | |
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Important Notice
Our weather forecast for Naperville in July is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Naperville forecast closer to your planned date for the most up-to-date weather information.
Naperville in July - FAQ
What are the expected maximum and minimum temperatures in Naperville during July?
During July, expect a variety of temperatures with highs around 28° and lows near 17°, suitable for diverse activities and preferences.
How much rainfall should be expected in Naperville during July?
Significant rainfall exceeding 141.2 mm is expected in Naperville during July, occurring over more than 15 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Naperville during July?
The average wind speed in Naperville during July is 15 km/h, suggesting breezy to windy conditions, depending on your activities.
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