The area immediately south of the A line of latitude currently at 66° 33′ 44″ (66.5622°) north of the Equator. It is the southern limit of the region of the Earth that experiences the 'midnight sun'.... More. Generally, The area immediately south of the Arctic circle. Generally, subarctic regions fall between 50°N and 70°N latitude, depending on local climate. In other words, the subarctic is the region between the... More regions fall between 50°N and 70°N latitude, depending on local The average weather we would expect over a long period of time (seasons, years, decades). Climate varies from place-to-place across the Earth. Climate is determined by long-term (over at least... More. In other words, the subarctic is the region between the Definitions of the Arctic vary according to environmental, geographical, political, cultural and scientific perspectives. Some scientists define the Arctic as areas having a high latitude, long winters, short, cool summers,... More (to the north) and temperate zones (to the south).