A study was conducted to assess the change in climate that has happened in Malam Jabba, Swat Forest Division for the last 30 years i.e. 1985-2015 and its impact on the tree ring widths (growth) of Blue pine (Pinus wallichiana). Results of the study showed an increase of 1.20oC in annual temperature and 9.58 mm in annual precipitation for the studied period. Correlation and Response Function Analysis between tree rings and climatic parameters indicated an obvious transformation in both coefficients from June-September of the previous year to current growth years in case of precipitation and during the month of June in case of temperature. Significant positive correlation was found with June of the current growth season in case of mean monthly temperature. Moreover, June temperature along-with availability of rainfall has been found favoring the growth of this tree species.