The climate of the USA
Climate of the USA The USA is the fourth largest country in the world, after Russia, Canada and China. The United States has many kinds of climate. The weather ranges from the warm, wet conditions of the Appalachians to the semi-desert or desert conditions in some of the western states. It varies from southern Arizona and southern Florida, where almost there is no winter at all, to the territory of Montana, North Dakota and South Dakota, where there are long, very cold and severe winters. In other words, the US has practically all the climatic zones. The climatic conditions of the country are determined by the great mountains and the wind. West of the Rocky Mountains, running all the way from the Canadian border to Mexico, there are vast areas where almost no trees grow. In this section of the country there are deserts, which receive as little as 12-13 centimetres of rainfall a year. Yet, west of the Sierra Nevada Mountains, there are places in which 250 centimetres of rain fall annually.