What's the weather like in March, April and May in Tibet?

The temperature in Lhasa, Qamdo and Shigatse is about 10- 15 degrees, but the temperature difference between day and night is large, only below 10 degrees at night. It's cold in the morning and evening, so take more clothes, but the air in Tibet is thin and the oxygen content is low, so it will be very tired to bring more personal belongings. This needs to be weighed. Generally speaking, the weather in northwest China is cold and dry. Under normal circumstances, even if you go to Lhasa, the weather is good, neither too hot nor too cold. Just pay attention to the temperature difference between morning and evening.