Sokoto usually referred to as Sokoto State to distinguish it from the city of Sokoto, is located in the extreme northwest of Nigeria, near to the confluence of the Sokoto River and the Rima River. With an annual average temperature of 28.3 °C (82.9 °F), Sokoto is, on the whole, a very hot area. However, maximum daytime temperatures are for most of the year generally under 40 °C (104.0 °F) and the dryness makes the heat bearable. The warmest months are February to April when daytime temperatures can exceed 45 °C (113.0 °F). The rainy season is from June to October during which showers are a daily occurrence The region's lifeline for growing crops is the floodplains of the Sokoto-Rima river system (which are covered with rich alluvial soil. Sokoto State is essentially an agricultural state with traditional mode of production predominating and more than 90 percent of the population engaged in subsistence farming. The main crops produced in the State are millet, guinea corn, maize, rice, beans, wheat, cassava, potatoes, groundnut, cotton, sugar cane, and tobacco. Fruits and vegetables grown in the State include oranges, mangoes, cashew, bananas, lettuce, spinach, okra, cabbage, pawpaw and guava.