Weather in Janesville in August
Janesville, United States averages a high of 26.5°C (79.7°F) and low of 17.6°C (63.7°F) in August, with 10 rain days and 11.2 hours of daily sunshine. Travel score: 83.8/100 (Excellent). The best time to visit Janesville is July.
High
27°C80°F
Low
18°C64°F
🌧️
10
rain days
☀️
11.2
hrs/day sunshine
💧
72%
humidity
84— Excellent
August in Janesville is warm and occasionally wet — ideal for sightseeing and outdoor activities.
What are the average temperatures in Janesville?
How much does it rain in Janesville in August?
Janesville receives an average of 86mm of rainfall across 10 rainy days in August. The annual total is 871.2mm.
What should I pack for Janesville 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