What is the temperatures in the next two weeks in Zhangjiajie? Is it cold on top of the mountain?

Hi, the lowest temp will be 0-2C and the highest temp will be 16C or higher. And it will be certainly cold on the mountain. I suggest you take along the thick autumn clothes, such as cardigan, sweater and overcoat.
Right, one more thing: you may meet at least 3 rainy days in the following two weeks, so the rainy coat is also needed.