Is it cold enough for ya? Some good ideas from the CDC for extremely cold weather include:

Winter Survival Kit for Your Home

Keep several days’ supply of these items:
• Food that needs no cooking or refrigeration, such as bread, crackers, cereal, canned foods, and dried fruits. Remember baby food and formula if you have young children.
• Water stored in clean containers, or purchased bottled water (5 gallons per person) in case your water pipes freeze and rupture.
• Medicines that any family member may need.

These and other helpful hints can be found here: