With a population of around 29,800, Atascadero sits in California, United States. The city operates in the Pacific Time Zone.
In 2025, Atascadero recorded an average annual temperature of 58°F — about 2.5°F below the 30-year normal of 60°F. The hottest day reached 99°F in August; the coldest was 31°F in February. Total precipitation was 19 inches (wetter than usual). The wettest month was December.
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