Is it cold in June and July in Linzhi, Tibet?

In Tibet in June, it is mostly sunny and sometimes cloudy during the day, and the temperature is around 20-25 degrees. In Tibet in June, it was windy at night and occasionally rained, but it stopped early the next morning, when the temperature was around 9- 13 degrees. It is recommended to bring thick clothes. To go to high altitude areas such as Mount Everest, you should bring down jackets or jackets. There is a big temperature difference between morning and evening in Tibet, so we must pay attention to increasing clothes in time to avoid a high reaction caused by a cold, which is not worth the candle.