Weather in Joliet in August
Joliet, United States averages a high of 27.5°C (81.5°F) and low of 18.4°C (65.1°F) in August, with 10 rain days and 11.4 hours of daily sunshine. Travel score: 82.9/100 (Excellent). The best time to visit Joliet is September.
High
28°C82°F
Low
18°C65°F
🌧️
10
rain days
☀️
11.4
hrs/day sunshine
💧
73%
humidity
83— Excellent
August in Joliet is warm and occasionally wet — ideal for sightseeing and outdoor activities.
What are the average temperatures in Joliet?
How much does it rain in Joliet in August?
Joliet receives an average of 97mm of rainfall across 10 rainy days in August. The annual total is 989.9mm.
What should I pack for Joliet in August?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
👕
Light layers and t-shirts
Warm weather around 28°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