Gridley is a city of approximately 6,600 people in California, United States. Located in the Pacific Time Zone at 39.4°N latitude.
In 2025, Gridley recorded an average annual temperature of 64°F — about 0.6°F above the 30-year normal of 63°F. The hottest day reached 107°F in August; the coldest was 29°F in February. Total precipitation was 32 inches (wetter than usual). The wettest month was February.
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