About Boonton, NJ's Climate & Weather History

Boonton, in New Jersey, United States, is home to roughly 8,400 people in the Eastern Time Zone at 40.9°N latitude.

In 2025, Boonton recorded an average annual temperature of 53°F — about 2.6°F below the 30-year normal of 55°F. The hottest day reached 98°F in June; the coldest was 4°F in January. Total precipitation was 41 inches (drier than usual). The wettest month was May.