With a population of around 6,900, Rumson sits in New Jersey, United States. The city operates in the Eastern Time Zone.
In 2025, Rumson recorded an average annual temperature of 55°F — right at the 30-year normal of 54°F. The hottest day reached 98°F in June; the coldest was 11°F in January. Total precipitation was 40 inches (drier than usual). Snowfall totaled 6 inches, below the 26-inch average. The wettest month was May.
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