Weather in Palo Alto in September
Palo Alto, United States averages a high of 26.3°C (79.3°F) and low of 15°C (59°F) in September, with 1 rain days and 11.7 hours of daily sunshine. Travel score: 96.7/100 (Excellent). The best time to visit Palo Alto is July.
High
26°C79°F
Low
15°C59°F
🌧️
1
rain days
☀️
11.7
hrs/day sunshine
💧
68%
humidity
97— Excellent
September in Palo Alto is warm and dry — ideal for sightseeing and outdoor activities.
What are the average temperatures in Palo Alto?
How much does it rain in Palo Alto in September?
Palo Alto receives an average of 2.6mm of rainfall across 1 rainy days in September. The annual total is 501.8mm.
What should I pack for Palo Alto in September?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
👕
Light layers and t-shirts
Warm weather around 26°C
🧴
Sunscreen SPF 30+
12 hours of sunshine daily
🕶️
Sunglasses
Protect your eyes from bright sun
Traveling to United States in September?
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