Zambia's elevation on a plateau gives it a moderate to tropical climate. There are three seasons; cool and dry from May to August, hot and dry from September to October and warm and wet from November to April. Averages temperatures range from 23ºC (73ºF) in winter to 35ºC (95ºF) in summer, when conditions can be humid. In the river valleys of the Zambezi and Luangwa it becomes very hot in the month of October. In winter months, particularly in Livingstone, temperatures in the evenings and early mornings can be very cold with temperatures dropping to freezing on occasion.