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. Spring comes after a severe winter, days become longer, and nights shorter. It is during this time that the snow melts and animals come out from hibernation. All animals and livestock breed while the soil thaws in the warm spring weather. Spring is the prosperous season of the year when everybody is calm and relaxed; grass turns green, anemones grow up and nature is covered with its green dress. Beginning in March spring usually lasts about 60 days although it can be as long as 70 days or as short as 45 days in some areas of the country. For people and livestock, it is also a harsh season of the driest and the windiest days although it gets warm in spring, livestock breed and gain their weight, and grass becomes green.
Autumn in Mongolia is the season of transition from the hot and wet summer to the cold and dry winter. There is less rainfall in autumn. Gradually it gets cooler and vegetables and grains are harvested at this time. Pasture and forests become yellow. Flies die and livestock are fat and woolly in preparation for the winter. Autumn is an important season in Mongolia in order to prepare for winter; harvesting the crops, vegetables and fodder; getting ready their cattle barns and sheds; preparing firewood and warming up their homes and so on. Autumn lasts about 60 days from the beginning of September until the early November. In some years, there are many long and sunny days in autumn.
In Mongolia, winter is the most severe, the coldest and longest season. All rivers, lakes, streams and ponds freeze in winter. It snows throughout the country, but not heavily. After making all the necessary preparations for a long winter, herdsmen stay at their winter camps. Winter starts early in November and lasts about 110 days until March. Sometimes it snows in September and November, but the heavy snow usually occurs at the beginning of October. January is the coldest winter month in Mongolia and the mean temperature is 95° F (-25° C) in Khangai mountain regions, 59° F (-15° C) in Gobi and 68° F (-20° C) and 77° F (-25° C) in the other parts of the country.