With a population of around 7,700, Sebastopol sits in California, United States. The city operates in the Pacific Time Zone.
In 2025, Sebastopol recorded an average annual temperature of 58°F — about 0.6°F below the 30-year normal of 58°F. The hottest day reached 98°F in August; the coldest was 31°F in February. Total precipitation was 28 inches (drier than usual). The wettest month was February.
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