Forests have great potential for moderating climate changes and contain the most carbon storage in the world. Therefore, any kind of threat and change in this ecosystem may lead to changes in vegetation composition, reduced diversity, and ecosystems service on local, regional,and global scales. The main purpose of this study was to compare the climate parameters changes in a forest ecosystem vs urban area. The minimum and maximum temperature, precipitation, and radiation by using ofLARS-WG model were evaluated for the past and the future periods in a forest climatic station at Kaleybar (settled in Arasbaran forest)and Tabriz as an urban station. The results of the study in the past period showed that all the climate parameters had a significant difference (p≤0.05) between forest and urban areas. The minimum temperature, maximum temperature, and radiation have a lower amount but the average rainfall has a significantly higher amount in the forest station (p≤0.05). In addition, all climatic parameters will increase except the minimum temperature in the future. The comparison of the future climate condition in the Arasbaran forest showed that minimum temperature and radiation will increase significantly, but maximum temperature and precipitation will not show a significant difference. Eventually, the present study showed that the climate change trend of the forest ecosystem was less than the urban environment, and it refers to the role of forest ecosystem in climate change mitigation.