The average temperature in the state varies from 4°C to 19°C during the winter and 26°C to 37°C during the summer accompanied by high humidity. The humidity the is brought to Assam by the southwest monsoons (April to October)showering an average annual rainfall of 120 inches or more on the Brahmaputra valley and the surrounding region. The average rainfall for the state as a whole is about 2900mm with maximum precipitation during June and July.