So you want to let fluffy's hair grow out so they don't get cold. There are different lengths of haircut to choose from, it doesn't always have to be a short clip like what is chosen most of the time during the summer months.
Letting the coat grow, (and tangle) over that length of time is not healthy for your pet. Add snow balling up in the coat several times a day, and it's going to be a mess. A longer yet easy to maintain clip can be done throughout the winter months to leave your pet with enough coat to withstand the sometimes brutal winters we have here in Montana. Waiting to long is only going to neglect your pet of a vital part of keeping them healthy and happy.
One: Dogs toenails need to be trimmed once a month (winter especially) as they aren't out being walked, or playing and wearing down those nails, so overgrowth occurs allowing the quicks to grow out to long and can begin to cause the toe to twist causing pain as the dog walks, which is irreversible. We can slowly work the quicks back, but a twisted toe will never go back.
Two: Waiting to bath/groom your pet and not checking things that regularly get checked at the groomer like ears, anal glands, and skin condition can create a costly problem at the vets if found to late.
Three: Overall condition of your pets coat. I have covered this before, but waiting and not properly brushing and combing at home with double the coat to try to care for can become a major problem for your beloved pet. It can create sores, and lesions on your pet that are extremely uncomfortable, and require extra time and care for me to remove, which in turn costs more money. The way I put it (for women who have worn pony tails) is you know that feeling when you've had on a really tight pony tail all day and you get to take it down at the end of the day? Imagine not being able to take it down, and every day it pulls tighter and tighter on your head. Pretty uncomfortable right? That's what your pet is going through everyday all over its body. For pets like Border Collies etc, who shed out undercoat everyday, that becomes trapped and pelted, when that happens your pet can not regulate their body temp, so it is actually doing more harm than good leaving all that in till spring.
So please don't wait for spring to have your pet groomed, just because the snow flies here doesn't mean you should wait. I have only the best interest of your pet in mind. I want to keep them safe and comfortable all winter long.
If you have any questions please feel free to call. Have a great day!