Colusa is a city of approximately 5,900 people in California, United States. Located in the Pacific Time Zone at 39.2°N latitude.
In 2025, Colusa recorded an average annual temperature of 65°F — about 3.2°F above the 30-year normal of 62°F. The hottest day reached 111°F in July; the coldest was 30°F in January. Total precipitation was 20 inches (near normal). The wettest month was February.
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