Haircut??

I used to have really long hair, which took me a long time to grow out. This summer I cut my hair short and now it’s a little past my shoulder. I really want my hair to be long again but since I go to college up in the north my hair ends have gotten dry from the cold I guess? I’m from the west coast! Should I get my ends trimmed a little before going back to school or keep it growing so it can get long? I don’t want to have split or dry ends but I also want it to keep growing! The next time I would be able to cut it would be March! Thanks for your advice! xo