Climate change is one of the most important challenges of this century. The maximum and minimum temperatures and precipitation were predicted for the intermediate future (2046- 2065) and distant future (2100- 2080) by statistical downscaling outputs of HadCM3 model under emission scenarios shows average of the mean temperatures will increase in the range of 1.5 to 2.1 °C in the next 50 years (20-year average of the intermediate future) and 2.4 to 3.9 °C in the next 100 years (20-year average of the distant future) compared to the base periods. According to the results of this study, drought is one of the most serious future crises in the country, which if not addressed, will threaten Iran's future in various aspects.