should walk a shorter time than you normally would. moisture on the body, in the form of wet or melting snowflakes, will lower body temperatures faster.
the best piece of advice i can give you is to know your dog – pay attention to the signals they are giving you. most dogs, outside with you, will show by shivering or lifting their paw(s) off the ground that they would rather be somewhere else when they are too cold. the dog who is running in circles and sniffing out deer poop or chasing a ball is happy outdoors.
the bottom line, don’t hibernate just because it’s cold. get outside even for a little 