With a population of around 12,000, Los Alamos sits in New Mexico, United States. The city operates in the Mountain Time Zone.
In 2025, Los Alamos recorded an average annual temperature of 50°F — about 1.8°F below the 30-year normal of 52°F. The hottest day reached 90°F in June; the coldest was 6°F in January. Total precipitation was 22 inches (wetter than usual). The wettest month was September.
View current conditions and forecast for Los Alamos · More cities in New Mexico