The Great Plains and Midwest are most impacted by cold air masses from the Arctic, especially during winter.

The Great Plains and Midwest are particularly affected by cold air masses from the Arctic, especially during the winter months. These regions, including states like Minnesota, North Dakota, and Nebraska, lie in the direct path of frigid Arctic air that moves southward. The flat terrain and lack of significant mountain ranges allow this cold air to easily sweep into these areas, resulting in harsh winter conditions with very low temperatures, snowstorms, and blizzards. This influence of Arctic air is a key factor in the harsh winters experienced in the central and northern parts of the U.S.