Weather in Castle Rock in August
Castle Rock, United States averages a high of 27.4°C (81.3°F) and low of 13.2°C (55.8°F) in August, with 9 rain days and 12.4 hours of daily sunshine. Travel score: 89.4/100 (Excellent). The best time to visit Castle Rock is August.
High
27°C81°F
Low
13°C56°F
🌧️
9
rain days
☀️
12.4
hrs/day sunshine
💧
53%
humidity
89— Excellent
August in Castle Rock is warm and occasionally wet — ideal for sightseeing and outdoor activities.
What are the average temperatures in Castle Rock?
How much does it rain in Castle Rock in August?
Castle Rock receives an average of 44mm of rainfall across 9 rainy days in August. The annual total is 486.9mm.
What should I pack for Castle Rock in August?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
👕
Light layers and t-shirts
Warm weather around 27°C
🧴
Sunscreen SPF 30+
12 hours of sunshine daily
🕶️
Sunglasses
Protect your eyes from bright sun
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