If you are going to Shangri-La, the lowest temperature in the near future is around MINUS one degree.
If you go to Xishuangbanna, the highest temperature in the near future is around 33.
In Yunnan province, the temperature difference between morning and evening is only a little big.
You can wear a long-sleeved coat in the daytime climate.
Wear short sleeves except Xishuangbanna.
Comrades who love beauty
When traveling in Yunnan, you must bring sunscreen and parasols.
As for local products,
Be sure to buy Pu 'er tea.
Or medicinal materials
And Jed
I hope I can help you.