In general, Argentina has four main climate types: warm, moderate, arid, and cold, all determined by the expanse across latitude, range in altitude, and relief features. Although the most populated areas are generally temperate, Argentina has an exceptional amount of climate diversity, ranging from subtropical in the north to polar in the far south. Consequently, there is a wide variety of biomes in the country, including subtropical rain forests, semi-arid and arid regions, temperate plains in the Pampas, and cold subantarctic in the south. The average annual precipitation ranges from  in the driest parts of Patagonia to over  in the westernmost parts of Patagonia and the northeastern parts of the country. Mean annual temperatures range from  in the far south to  in the north.