What is the weather in Jiuzhaigou on mid Oct if I prepare to go? What attire should I wear?

Are you going to Jiuzhaigou this mid Oct.?
If so, according to the weather forecast, it will cool and windy. The average temp may be 68F in the day time and 46F at night. It will rain on 10th, 11th, 12th, 13th and 15th. The rest days are sunny. You are suggested to wear long-sleeved shirts and overcoat. If convenient, prepare rain gear, too.