DuPage County (Naperville)
August
Weather in DuPage County, Illinois for August 2026
Your guide to DuPage County weather in August - trends and predictions
In general, the average temperature in DuPage County at the beginning of August is 27.9 °F. As the month progressed, temperatures tended to moderately fall, reaching an average of 27.1 °F by the end of August.
The climate of DuPage County in August is notably wet, with an average of 15 rainy days, and a total of 68.5 mm of precipitation.
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Temperatures
Rain 🌧️
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16
Dry days
15
Rainy days
0
Snow days
27°/17°
Temperatures
17 km/h
Avg max wind
70 %
Avg humidity
DuPage County Weather August
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Temperatures trend during August in DuPage County
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August weather in DuPage County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Aug. 1 |  Patchy rain possible | 29° /18° | 2.8 mm | 6 | |
| Aug. 2 |  Cloudy | 28° /17° | 0 mm | 6 | |
| Aug. 3 |  Overcast | 29° /19° | 1.1 mm | 7 | |
| Aug. 4 |  Moderate rain at times | 29° /17° | 0.3 mm | 7 | |
| Aug. 5 | Moderate or heavy rain shower | 28° /19° | 3.1 mm | 6 | |
| Aug. 6 | Patchy rain possible | 26° /18° | 3.2 mm | 6 | |
| Aug. 7 | Moderate rain at times | 26° /18° | 2.3 mm | 6 | |
| Aug. 8 | Patchy rain possible | 28° /18° | 3.6 mm | 6 | |
| Aug. 9 | Overcast | 28° /16° | 0 mm | 7 | |
| Aug. 10 | Patchy rain possible | 25° /16° | 13 mm | 6 | |
| Aug. 11 | Patchy rain possible | 28° /17° | 3.8 mm | 6 | |
| Aug. 12 | Patchy rain possible | 27° /18° | 34.3 mm | 6 | |
| Aug. 13 | Moderate rain at times | 28° /17° | 0.5 mm | 7 | |
| Aug. 14 | Moderate or heavy rain shower | 27° /16° | 6.5 mm | 6 | |
| Aug. 15 | Patchy rain possible | 26° /17° | 3.9 mm | 6 | |
| Aug. 16 | Overcast | 30° /18° | 7.9 mm | 6 | |
| Aug. 17 | Moderate or heavy rain shower | 25° /18° | 16.8 mm | 6 | |
| Aug. 18 |  Sunny | 26° /16° | 0 mm | 6 | |
| Aug. 19 |  Partly cloudy | 28° /17° | 0 mm | 6 | |
| Aug. 20 | Sunny | 29° /17° | 0 mm | 7 | |
| Aug. 21 | Cloudy | 26° /17° | 0 mm | 6 | |
| Aug. 22 | Overcast | 28° /16° | 0 mm | 6 | |
| Aug. 23 | Overcast | 32° /17° | 0 mm | 7 | |
| Aug. 24 | Partly cloudy | 30° /17° | 0 mm | 7 | |
| Aug. 25 | Patchy rain possible | 27° /17° | 3.8 mm | 6 | |
| Aug. 26 | Overcast | 28° /15° | 0.4 mm | 6 | |
| Aug. 27 | Partly cloudy | 28° /16° | 0 mm | 6 | |
| Aug. 28 |  Mist | 27° /16° | 2 mm | 6 | |
| Aug. 29 | Light rain shower | 28° /15° | 1.3 mm | 6 | |
| Aug. 30 | Overcast | 26° /16° | 1.5 mm | 6 | |
| Aug. 31 | Mist | 26° /16° | 0.1 mm | 6 | |
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Important Notice
Our weather forecast for DuPage County in August 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 August - FAQ
What are the expected maximum and minimum temperatures in DuPage County during August?
During August, expect a variety of temperatures with highs around 27° and lows near 17°, suitable for diverse activities and preferences.
How much rainfall should be expected in DuPage County during August?
Moderate rainfall is anticipated in DuPage County during August, with a total of 68.5 mm spread over approximately 15 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in DuPage County during August?
The average wind speed in DuPage County during August is 17 km/h, suggesting breezy to windy conditions, depending on your activities.
August rainfall patterns in DuPage County
Explore the daily rainfall trends and prepare for DuPage Countys August weather 💧
UV exposure in DuPage County during August
Stay informed about UV levels for safe outdoor activities throughout the month of August ☀️
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