Feeling cold in a dream is read as emotional distance — in someone around you or in yourself. Folk tradition ties it to warmth that has been withdrawn.
Where in your waking life have you met something like this lately?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.