In very cold weather, the pads on the bottom of your cat's feet can take a beating. They may appear dry and slightly cracked. If you notice this, or, better yet, before it becomes a problem, here are some measures you can take:
After each walk or trip outdoors, wash off your pet's feet. This will get any ice off them and washes off any road salt that could be causing the dryness.
Trim the hair between your pet's toes; it often collects ice and snow.
And, of course, always consult your veterinarian with any questions or concerns.
For more information, please read the article Winter Hazards.