Weather in Naperville in August
Naperville, United States averages a high of 27.1°C (80.8°F) and low of 18.2°C (64.8°F) in August, with 10 rain days and 11 hours of daily sunshine. Travel score: 83.3/100 (Excellent). The best time to visit Naperville is September.
High
27°C81°F
Low
18°C65°F
🌧️
10
rain days
☀️
11
hrs/day sunshine
💧
73%
humidity
83— Excellent
August in Naperville is warm and occasionally wet — ideal for sightseeing and outdoor activities.
What are the average temperatures in Naperville?
How much does it rain in Naperville in August?
Naperville receives an average of 94.3mm of rainfall across 10 rainy days in August. The annual total is 962.5mm.
What should I pack for Naperville in August?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
👕
Light layers and t-shirts
Warm weather around 27°C
🧴
Sunscreen SPF 30+
11 hours of sunshine daily
🕶️
Sunglasses
Protect your eyes from bright sun
Recommended
🧥
Light rain jacket
Some rainy days expected (10 days)
☔
Umbrella
Be prepared for occasional showers
Traveling to United States in August?
Don't let a public holiday surprise you — restaurants, shops, and attractions may be closed.
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Data based on 1994–2024 averages · Last updated: 2024-12-31