What is the weather like in Beijing, Xian, Guilin and Shanghai during the last 2 weeks in August?

The temperature may range from 75 F to 80 F at that time in Beijing and Xian. For Guilin and Shanghai, the climate would be warmer and moist. Guilin and Shanghai might have frequent rainfall durting that period of time. For clothes, summer clothes are enough to prepare. Remember to bring rain gear. :)