Weather in Diamond Bar in October
Diamond Bar, United States averages a high of 26.2°C (79.2°F) and low of 13.7°C (56.7°F) in October, with 3 rain days and 10.3 hours of daily sunshine. Travel score: 96.7/100 (Excellent). The best time to visit Diamond Bar is July.
High
26°C79°F
Low
14°C57°F
🌧️
3
rain days
☀️
10.3
hrs/day sunshine
💧
59%
humidity
97— Excellent
October in Diamond Bar is warm and dry — ideal for sightseeing and outdoor activities.
What are the average temperatures in Diamond Bar?
How much does it rain in Diamond Bar in October?
Diamond Bar receives an average of 18.1mm of rainfall across 3 rainy days in October. The annual total is 393.2mm.
What should I pack for Diamond Bar in October?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
👕
Light layers and t-shirts
Warm weather around 26°C
🧴
Sunscreen SPF 30+
10 hours of sunshine daily
🕶️
Sunglasses
Protect your eyes from bright sun
Recommended
🧥
Evening jacket or cardigan
Temperature drops 13°C from day to night
🎉Visiting United States in October?
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Data based on 1994–2024 averages · Last updated: 2024-12-31