DuPage County (Naperville)
July
Weather in DuPage County, Illinois for July 2026
Your guide to DuPage County weather in July - trends and predictions
Meteorological - Air Quality Alert - See hour by hour.
So far, July 2026 in DuPage County shows a warmer trend than usual by 2.3 °C.
The forecast for the next days in DuPage County predicts temperatures to be around 27 °C, close to the historical average.
In general, the average temperature in DuPage County at the beginning of July is 28.9 °C. As the month progressed, temperatures tended to slightly decrease, reaching an average of 28.6 °C by the end of July.
DuPage County experiences heavy rainfall in July, with over 20 rainy days and an average total precipitation 184.9 mm.
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Temperatures
Rain 🌧️
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7
Dry days
24
Rainy days
0
Snow days
29°/19°
Temperatures
15 km/h
Avg max wind
75 %
Avg humidity
DuPage County Weather July
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Temperatures trend during July in DuPage County
See the weather trend as well as the moving average line
July weather in DuPage County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Jul. 1 |  Patchy rain possible | 29° /18° | 5.7 mm | 7 | |
| Jul. 2 |  Moderate or heavy rain shower | 28° /20° | 11.7 mm | 8 | |
| Jul. 3 |  Overcast | 30° /19° | 11.1 mm | 8 | |
| Jul. 4 | Light rain shower | 30° /19° | 14.1 mm | 7 | |
| Jul. 5 | Moderate or heavy rain shower | 29° /19° | 7.4 mm | 7 | |
| Jul. 6 | Patchy rain possible | 27° /17° | 7.4 mm | 7 | |
| Jul. 7 | Patchy rain possible | 29° /16° | 1.2 mm | 8 | |
| Jul. 8 | Moderate or heavy rain shower | 28° /18° | 7.7 mm | 8 | |
| Jul. 9 | Overcast | 28° /18° | 7.4 mm | 8 | |
| Jul. 10 |  Sunny | 29° /17° | 5.8 mm | 8 | |
| Jul. 11 | Moderate or heavy rain shower | 30° /18° | 10.4 mm | 8 | |
| Jul. 12 | Moderate or heavy rain shower | 30° /19° | 6.7 mm | 8 | |
| Jul. 13 | Patchy rain possible | 28° /18° | 0.8 mm | 7 | |
| Jul. 14 | Overcast | 33° /19° | 0.1 mm | 8 | |
| Jul. 15 |  Heavy rain at times | 31° /20° | 5.9 mm | 8 | |
| Jul. 16 | Overcast | 31° /20° | 23.9 mm | 8 | |
| Jul. 17 | Overcast | 26° /18° | 4 mm | 7 | |
| Jul. 18 | Overcast | 27° /16° | 1.4 mm | 7 | |
| Jul. 19 |  Partly cloudy | 29° /16° | 6.1 mm | 8 | |
| Jul. 20 | Sunny | 33° /17° | 1 mm | 6.6 | |
| Jul. 21 | Sunny | 27° /18° | 1.1 mm | 8.7 | |
| Jul. 22 | Sunny | 23° /12° | 0 mm | 9.2 | |
| Jul. 23 | Sunny | 24° /13° | 0 mm | 9.1 | |
| Jul. 24 | Sunny | 24° /16° | 0.1 mm | 6 | |
| Jul. 25 | Sunny | 29° /15° | 0 mm | 7 | |
| Jul. 26 | Sunny | 27° /18° | 0 mm | 7 | |
| Jul. 27 | Sunny | 28° /19° | 0 mm | 7 | |
| Jul. 28 | Sunny | 32° /21° | 0 mm | 8 | |
| Jul. 29 | Sunny | 32° /23° | 0 mm | 8 | |
| Jul. 30 | Sunny | 27° /19° | 0.9 mm | 7 | |
| Jul. 31 | Sunny | 25° /15° | 0.1 mm | 6 | |
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Important Notice
Our weather forecast for DuPage County 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 DuPage County forecast closer to your planned date for the most up-to-date weather information.
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DuPage County in July - FAQ
What are the expected maximum and minimum temperatures in DuPage County during July?
During July, expect a variety of temperatures with highs around 29° and lows near 19°, suitable for diverse activities and preferences.
How much rainfall should be expected in DuPage County during July?
Significant rainfall exceeding 184.9 mm is expected in DuPage County during July, occurring over more than 24 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in DuPage County during July?
The average wind speed in DuPage County during July is 15 km/h, suggesting breezy to windy conditions, depending on your activities.
July rainfall patterns in DuPage County
Explore the daily rainfall trends and prepare for DuPage Countys July weather 💧
Typically, DuPage County has 24 rainy days in July with a total of 184.9 mm of rainfall.
UV exposure in DuPage County during July
Stay informed about UV levels for safe outdoor activities throughout the month of July ☀️
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Where is DuPage County?Get accurate weather forecasts for DuPage County, located at latitude 41.786 and longitude -88.147. Stay updated with localized weather information tailored for DuPage County.
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