Mount Airy is similar to Westminster in its position astride Parrs Ridge, and has a humid, temperate climate, more specifically a humid subtropical climate falling short of a humid continental climate, with four rather well defined seasons. The general atmospheric flow is from west to east but alternate surges of cold air from the north and of warm humid air from the south occurs in the area, causing highly variable weather. Nearness to the Atlantic Coast allows coastal storms to make up any deficiency of precipitation resulting from the passage of weather systems over the mountains to the west.