I plan to go to Shangrila and Lijiang in February 25 to March 2.

It will be 15 F to 50 F in Shangrila and 30 F to 60 F in Lijiang. There will mainly have sunny days. Although there may have several showers, it won't influence the sightseeing a lot. The climate will still be cold. You need to bring some warm clothes, such as down jackets, sweaters, long johns, pants and boots. :)