Weather in Castro Valley in October
Castro Valley, United States averages a high of 22.5°C (72.5°F) and low of 12.2°C (54°F) in October, with 3 rain days and 10 hours of daily sunshine. Travel score: 90.2/100 (Excellent). The best time to visit Castro Valley is September.
High
23°C73°F
Low
12°C54°F
🌧️
3
rain days
☀️
10
hrs/day sunshine
💧
69%
humidity
90— Excellent
October in Castro Valley is warm and dry — ideal for sightseeing and outdoor activities.
What are the average temperatures in Castro Valley?
How much does it rain in Castro Valley in October?
Castro Valley receives an average of 23.1mm of rainfall across 3 rainy days in October. The annual total is 505.6mm.
What should I pack for Castro Valley in October?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
👕
Light layers and t-shirts
Warm weather around 23°C
🧴
Sunscreen SPF 30+
10 hours of sunshine daily
🕶️
Sunglasses
Protect your eyes from bright sun
Traveling to United States in October?
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