Mongolia is known to the world as country of "Blue Sky". Along with Southern Siberia this part of Asia has a continental climate, with long, cold, dry winters and brief, mild, and relatively wet summers.
The average summer temperature is +20c (+65F). Winter is –20c (-13F). The wind is 1.5-4.5m/s. The average rainfall is 200-220 mm. In Mongolia there are 250 sunny days a year, often with clear cloudless skies.
When Arctic air masses dominate in mid-winter, temperatures average 68° F (-20° C) to 95° F (-35° C). In the Uvs Lake basin in northwestern Mongolia, known as one of the coldest places in all of Asia, the lowest temperature ever recorder is 136° F (-58° C). By contrast, summer time temperatures in the Gobi desert climb as high as 104° F (40° C). Annual precipitation ranges from 24 inches (600 mm.) in the Khentii, Altai, and Khuvsgul Mountains to less than 4 inches (100 mm.) in the Gobi. In some parts of the Gobi, no precipitation may fall for several years in a row. Global warming influences to climate of Mongolia. The average annual temperature in Mongolia has increased by about 1.3F (0.7oC) over the past 50 years.