Oct 13-23 , 2012 weather + suggestion, please.

October is a nice time for travelling to Xinjiang because the weather is mild. The temperatures during daytime and nighttime vary greatly. The average difference is 12C Based on its dry, sandy and changeable climate, I suggest you bring the following items:
Take clothing for a wide range of temperatures. both heavy and light clothes. Comfortable shoes are a must. Personal items such as dental floss and feminine hygiene supplies must be taken. Such items cannot be bought along the route. Particularly at higher elevations, the sun's ultraviolet radiation can be very strong. Carry sun block and suntan oil to prevent sunburn. Also carry basic medical supplies, perhaps a small first aid kit plus medicines for ordinary ailments. Such medicines cannot be bought along the route.