In this study, column diffusion tests for Cd and Zn were conducted at $15^{circ}C$ and $55^{circ}C$ to investigate a temperature effect on effective diffusion coefficient. An increase in temperature from $15^{circ}C$ to $55^{circ}C$ caused up to ten times larger diffusion coefficient for each heavy metal. Besides, it caused the increased retardation of heavy metals, and hence the effective diffusion coefficient should be overestimated as we use an overestimated retardation factor to calibrate the coefficient. The results of sequential extraction analyses showed that Zn was occluded in carbonate phase and this trend was getting prominent with the increase in temperature. As for Cd, it was partitioned mainly in the exchangeable phase(over 60%) at any temperature.