Granite Hills is a city of approximately 3,000 people in California, United States. Located in the Pacific Time Zone at 32.8°N latitude.
In 2025, Granite Hills recorded an average annual temperature of 64°F — about 2.6°F above the 30-year normal of 61°F. The hottest day reached 101°F in May; the coldest was 38°F in January. Total precipitation was 17 inches (wetter than usual). The wettest month was March.
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