It totally varies, we go every year in December to see the Christmas decorations and the tree at Rockerfeller Center and it has been in the unseasonably warm 50's and it has been in the low 20's. Definately bring a heavy coat, hats, gloves, earmuffs, scarves. And if you forget anything there are stands everywhere that will sell you what you need. I can't even tell you how many pair of gloves and scraves I've bought my crew over the past years.