San Luis Obispo, in California, United States, is home to roughly 47,300 people in the Pacific Time Zone at 35.3°N latitude.
In 2025, San Luis Obispo recorded an average annual temperature of 59°F — about 0.8°F below the 30-year normal of 60°F. The hottest day reached 102°F in August; the coldest was 31°F in January. Total precipitation was 24 inches (wetter than usual). The wettest month was December.
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