I have been there at this time of the year 6 or 7 times and never needed long pants or long sleeved shirts. But since I was leaving from cold NYC did have to wear a coat to the airport. One year it was really cold and I had to wear lined leather gloves and a hat to the airport and one of my JA friends ( a guy) put on both the hat and the gloves and vamped in front of the mirror doing different fashion poses and "look tough in ladies winter accessories moves". I think he had never seen gloves like that in person.