This work "Effects of Climate Variability on Wheat Crop Productivity over the Central Rift Valley of Ethiopia" is the original work addressing climate variability and predictability. On the other hand it asses the impact of climate variability on crop production and recommends way forward to mitigate the negative impact of climate variability on crop production. It is highly useful for researchers,decision makers,farmers and agricultural investors. "Climate variability is an unavoidable aspect everywhere all over the world under rain fed agriculture. However, it can be managed at least partially or may even be changed to one?s advantage, even though solving the problem completely is difficult."