With a population of around 6,300, Carlstadt sits in New Jersey, United States. The city operates in the Eastern Time Zone.
In 2025, Carlstadt recorded an average annual temperature of 54°F — about 1.2°F below the 30-year normal of 55°F. The hottest day reached 101°F in June; the coldest was 3°F in January. Total precipitation was 43 inches (drier than usual). The wettest month was May.
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