With a population of around 1,900, Los Alamos sits in California, United States. The city operates in the Pacific Time Zone.
In 2025, Los Alamos recorded an average annual temperature of 58°F — about 0.6°F below the 30-year normal of 59°F. The hottest day reached 96°F in August; the coldest was 33°F in March. Total precipitation was 20 inches (wetter than usual). The wettest month was November.
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