With a population of around 6,600, Thermalito sits in California, United States. The city operates in the Pacific Time Zone.
In 2025, Thermalito recorded an average annual temperature of 64°F — about 0.8°F above the 30-year normal of 63°F. The hottest day reached 107°F in August; the coldest was 32°F in February. Total precipitation was 34 inches (wetter than usual). The wettest month was February.
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