 At the beginning of the film, the characters mistakenly believe that  the weather outside is cold. When they descend from the upper floors  to the ground level however, they find that it is in fact quite  warm. This phenomenon of weather varying from the upper to lower  floors actually does occur at the Hancock Center due to the  buildings height. Residents often call the lobby doormen before  leaving their apartments to find out what conditions are like at  ground level.