About Kinnelon, NJ's Climate & Weather History

With a population of around 10,400, Kinnelon sits in New Jersey, United States. The city operates in the Eastern Time Zone.

In 2025, Kinnelon recorded an average annual temperature of 51°F — about 4.1°F below the 30-year normal of 55°F. The hottest day reached 95°F in June; the coldest was 3°F in January. Total precipitation was 42 inches (drier than usual). The wettest month was May.