About Mahopac, NY's Climate & Weather History

With a population of around 8,400, Mahopac sits in New York, United States. The city operates in the Eastern Time Zone.

In 2025, Mahopac recorded an average annual temperature of 50°F — about 0.7°F above the 30-year normal of 50°F. The hottest day reached 94°F in June; the coldest was -2°F in January. Total precipitation was 44 inches (drier than usual). The wettest month was May.