and southern Mongolia has a thermal regime similar to that of the Dfa climate type, but these regions receive so little precipitation that they are more often classified as steppes (BSk) or deserts (BWk). Dsa climates are rare; they are generally restricted to elevated areas adjacent to Mediterranean climate regions with a Csa climate well inland to ensure hot summers and cold winters. They are generally found in the highly elevated areas of south-eastern Turkey (Hakkâri), north-western Iran and parts of Central Asia. This climate zone does not exist at all in the southern hemisphere, where the only landmass that enters the upper-middle latitudes, South America, tapers too much to have any place that gets the combination of snowy winters and hot summers. Marine influences preclude Dfa, Dwa, and Dsa climates in the southern hemisphere. Warm summer subtype Also known as Hemiboreal climate, areas featuring this subtype of the continental climate have an average temperature in the warmest month below . Summer high temperatures in this zone typically average between during the daytime and the average temperatures in the coldest month are generally well or far below the (or ) isotherm. Frost-free periods typically last 3–5 months. Heat spells lasting over a week are rare. The warm summer version of the humid continental climate covers a much larger area than the hot subtype. In North America, the climate zone covers from about 42°N to 50°N latitude mostly east of 100°W, including parts of Southern Ontario, the southern half of Quebec, The Maritimes, and Newfoundland, as well as the northern United States from eastern North Dakota east to Maine. However, it can be found as far north as 54°N, and further west in the Canadian Prairie Provinces and below 40°N in the high Appalachians. In Europe, this subtype reaches its most northerly latitude in Bodø at the 67°N. High-altitude locations such as Aspen, Colorado and Los Alamos, New Mexico in the western United States exhibit local Dfb climates. The south-central and southwestern Prairie Provinces also fits the Dfb criteria from a thermal profile, but because of semi-arid precipitation portions of it are grouped into the BSk category. In Europe, it is found in much of Central Europe: Germany (in the east and southeast part of the country), Austria (generally below ), Poland, Czech Republic, Slovakia, Hungary (generally above ), Croatia (mostly Slavonia region), in much of Eastern Europe: Ukraine (the whole