Take Tina's words to heart. Regardless of any other differences we may have we are all doing something that is, by all counts, hard to do. We're trying to change ourselves, our thinking, how we relate to food and our priorities in life. No small task!
You'll find inspiration and compassion here. You'll see people with the same struggles. You may also find that you get called out on it when you are fooling yourself.
All of that can be helpful.
I know what you mean about the cold. It's 17 degrees right now and heading towards 5. While it isn't as nice as a walk on a cool spring day, you could hit up the local mall if you have one. When it first opens in the morning you'll probably find a whole bunch of people making a walking circuit around the mall.
On days like this, I dress up in socks, wool socks, long johns, sweats and then pants, a t-shirt, a long sleeve shirt and a heavy jacket, a heavy scarf, face-mask and mittens. Finally a pair of boots and I'm ready to spend some time outside.
The point being... look at yourself and decide if the weather really is stopping you. Or is it just a convenient excuse? Only you know the answer to that question.