Weather for urumqi turpan,grape valley & surrounding area from 27 Aug'15 to 6 Sept'15?

Well, according to the weather forecast, the temperatures of these places don't have large difference. The range will be 60 F to 75 F. And there will have many sunny days. The climate is suitable for sightseeing. Beside the summer clothes, you are suggested to bring light jackets in order to adapt large temperature difference in day and night.