I went 3 years ago at the same time you are and it was great! I like the cool weather so I was in heaven, balmy 70's to 80's during the day, low 40 to 50's at night, definitely think layers. And don't underestimate Florida at night it can reach 40 so don't forget gloves, scarves, etc. Even though I was OK with a heavy hooded sweatshirt with gloves, my 70yo Mom needed her coat (a light coat and sweater, scarf, gloves, hat) but she was always cold. AK gets very hot during the day but early in the morning its still cool so definitely plan on taking light sweater or jacket and removing during the day, its the hottest of all the parks and Feb. is NOT excluded. I swam during noon, whenever we were at hotel. We did a lot of resort hopping after parks were closed. Great time for low crowds. Have a wonderful trip!