The Forty-Sixth Parallel North is a circle of latitude that is 46 degrees north of the Earth's equatorial plane. It runs across several countries, including the United States, Canada, and parts of Europe. This parallel is often used as a reference point for geographical and climatic studies, as it generally marks the boundary between temperate and colder climates. In the United States, the Forty-Sixth Parallel North passes through states like Montana and New York. It is also notable for its proximity to various natural landmarks, such as the Great Lakes and the Rocky Mountains. This latitude is significant for understanding regional weather patterns and ecosystems.