About Watertown, NY's Climate & Weather History

With a population of around 26,800, Watertown sits in New York, United States. The city operates in the Eastern Time Zone.

In 2025, Watertown recorded an average annual temperature of 47°F — about 1.7°F above the 30-year normal of 45°F. The hottest day reached 91°F in July; the coldest was -7°F in February. Total precipitation was 46 inches (wetter than usual). The wettest month was May.