Isn’t it raining in Iran? Why?

Subtropical grassland and desert climate. According to the weather query website, Iran has a continental climate, with cold winters and hot summers, and most areas are less dry. The eastern and inland areas have a continental subtropical grassland and desert climate. The western mountainous areas mostly have a subtropical Mediterranean climate. The central plateau and its edge mountains have a continental climate. and the southern coastal area, the annual precipitation is below 200 mm. The Islamic Republic of Iran, referred to as "Iran", is located in West Asia and is a country in the Middle East.