ocr: China is dividedinto two main climatic regions. The north and west are semi-arid or arid, with extreme temp erature variations. The south and southeast are warmer and more humid, with year-round raintall. Winter temp eratures vary with latitude and are warmest on the sub-tropical southeast coast, where they average about 60°F. Summer temp peratures are more uniform, rising above 70'Fthroughout China. On the southeast coast, the July average is about 86°F. In the north and west, temperate Ulilels contrast with harsh winters. Ini northern Manchuria, rivers freeze for five months and temperatures ...