This pocket guide is written for field agents working in agricultural extension. The concepts, information and practices in this guide are meant to support field agents' work with farm families and to help reduce their risks from weather changes. Many of the families who farm small, unirrigated plots in the tropics already struggle against poverty, degraded land, and rainfall that varies from year to year. This type of farming, sometimes called rainfed agriculture, is especially vulnerable to climate change. The suggestions in the guide can be used to help farm families make changes that will help their farms withstand bad weather by adapting to it. It also include practical methods that meet the objectives that the United Nations Food and Agriculture Organization outlined for climate smart agriculture.