About Hammonton, NJ's Climate & Weather History

Hammonton, in New Jersey, United States, is home to roughly 14,600 people in the Eastern Time Zone at 39.6°N latitude.

In 2025, Hammonton recorded an average annual temperature of 55°F. The hottest temperatures reached 98°F in June; the coolest were 9°F in January. Total precipitation for the year was 40 inches, with the wettest month being July. Snowfall for the year totaled approximately 5 inches.