About Rensselaer, NY's Climate & Weather History

Rensselaer, in New York, United States, is home to roughly 9,400 people in the Eastern Time Zone at 42.6°N latitude.

In 2025, Rensselaer recorded an average annual temperature of 49°F — about 3.2°F above the 30-year normal of 46°F. The hottest day reached 94°F in July; the coldest was -8°F in January. Total precipitation was 50 inches (wetter than usual). The wettest month was May.