Weather in Sunnyvale in October
Sunnyvale, United States averages a high of 23.3°C (73.9°F) and low of 13°C (55.4°F) in October, with 3 rain days and 10.2 hours of daily sunshine. Travel score: 92.7/100 (Excellent). The best time to visit Sunnyvale is July.
High
23°C74°F
Low
13°C55°F
🌧️
3
rain days
☀️
10.2
hrs/day sunshine
💧
65%
humidity
93— Excellent
October in Sunnyvale is warm and dry — ideal for sightseeing and outdoor activities.
What are the average temperatures in Sunnyvale?
How much does it rain in Sunnyvale in October?
Sunnyvale receives an average of 28.1mm of rainfall across 3 rainy days in October. The annual total is 589.5mm.
What should I pack for Sunnyvale 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