Could you give me your accurate travel time. Anyway, the weather in Zhangjiajie is similar with it in Changsha. Thus you can check Changsha Weather(https://www.travelchinaguide.com/climate/changsha.htm) to find more information.

Dear summersnow

thanks for ur information, sorry by given wrong information bout my travelling schedule. Actually i want to go on 16/12/10 untill 25/12/10...
Now i am worry bout my preparation on shirt shoe or boat... Is there a raining and cool sesion? Shall i buy boat shoe?? I wander if i bring extrem cool coat but in actual is not that cool weather... Pls advise d weather...

It is reported that the temperature during daytime is around 10~15C during daytime, but the scenic area will be cooler than downtown area. So, you'd better wear warm sweater and downjacket. Boat shoe is not warm enough, a pair of boots should be better.