With a population of around 17,300, South Orange sits in New Jersey, United States. The city operates in the Eastern Time Zone.
In 2025, South Orange recorded an average annual temperature of 54°F — about 1.7°F below the 30-year normal of 56°F. The hottest day reached 102°F in June; the coldest was 4°F in January. Total precipitation was 41 inches (drier than usual). Snowfall totaled 8 inches, below the 32-inch average. The wettest month was May.
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