This bulletin reviews the September 2017 climate condition over the Greater Horn of Africa (GHA) region and highlights the November 2017 rainfall and temperature forecasts together with the socio-economic impacts associated with both the observed and the forecasted climate conditions. There are six sections in this bulletin. The major highlights from both the observed and expected climate conditions are outlined in section2. Section 3 provides climate patterns that prevailed in the month of in September 2017 are discussed, while the dominant weather systems are discussed in the section 4. In section 5, the November 2017 climate forecasts over the GHA are presented. The socio-economic impacts associated with the observed climatic conditions and those expected from November 2017 climate forecasts are outlined in the last section.