Possible Clues:

• One below 12, disappointment to weatherman
• Nose nipper in a Christmas song
• Guy "nipping at your nose," in a holiday song
• Father over the way going on to raise nipper
• Cold weather, personified
• Cold-caller perhaps personifies the chill factor
• Creator of patterns on cold windows, it's said
• Winter personified
• Winter personified as knave, female or twisted saint
• Personification of cold weather