About Clark, NJ's Climate & Weather History

Clark is a city of approximately 14,600 people in New Jersey, United States. Located in the Eastern Time Zone at 40.6°N latitude.

In 2025, Clark recorded an average annual temperature of 54°F — about 1.6°F below the 30-year normal of 56°F. The hottest day reached 103°F in June; the coldest was 3°F in January. Total precipitation was 42 inches (drier than usual). Snowfall totaled 8 inches, below the 32-inch average. The wettest month was May.