Hamilton Square is a city of approximately 12,800 people in New Jersey, United States. Located in the Eastern Time Zone at 40.2°N latitude.
In 2025, Hamilton Square recorded an average annual temperature of 55°F — about 0.7°F above the 30-year normal of 54°F. The hottest day reached 102°F in June; the coldest was 6°F in January. Total precipitation was 39 inches (drier than usual). Snowfall totaled 5 inches, below the 27-inch average. The wettest month was May.
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