ABSTRACT This research was investigated the effects of rainfall and temperature variability on wheat, Teff, Maize and Barley yield in west gojjam zone. The data used in this study were maximum temperature, minimum temperature, rainfall and wheat, Teff, Maize and Barley yield for the period 1997 to 2016 and Origin 07 and mat lab software were used for the analyses purpose. The weather parameters were correlated with selected crop yield (descriptive and inferential analysis techniques were used). Trend of crop yield and climatic parameters were developed and plotted against time. From this study, there was positive correlation between maximum temperature and all selected crop production (Maize, Teff, Wheat and Barley). Whereas, there was negative correlation between those selected crop yields and rainfall in Dembecha and Quarit district. There has been variability and none stability of Temperature and rainfall in study area, leads to high variability of crop yields from year to year in the study area. This finding has demonstrated that, there was an increasing trend of temperature and very slightly decreasing trend of rainfall in Quarit and Dembecha districts and, conversely, there has been slightly increasing trends of rainfall in Degadamot district, however, there was variability of temperature and rainfall from year to year that lead to high variability of crop yield over the study period. In those study area, Teff production was the most sensitive and affected by climate variability. Results showed that crop yield varied regularly with climate parameters. It was concluded that climate parameters vary in time whose effects given high variability of crop yield. In general, the seasonal and annual rainfall variations are results of the atmospheric dynamics like macro-scale pressure systems and moisture flows which are related to the changes in the pressure systems. Whereas, an increase and variability of temperature happened due to over increasing greenhouse gases and different unnecessary waste product.