With a population of around 8,500, Spotswood sits in New Jersey, United States. The city operates in the Eastern Time Zone.
In 2025, Spotswood recorded an average annual temperature of 55°F — about 2.2°F above the 30-year normal of 53°F. The hottest day reached 103°F in June; the coldest was 4°F in January. Total precipitation was 38 inches (drier than usual). The wettest month was May.
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