In my opinion, winter is the best time of the year to make images. It comes with some risks, though.
While I do go on some hikes, most of the shooting during the cold months is done not too far from the car. I drive to a location and make a few exposures. Then I drive to the next spot. This is what I did last week during some intense cold and foggy weather.
I wasn't careful enough and several days of moving between a warm car and the freezing outdoors have taken their toll on me.
It's just a cold and I'll be out making new images soon. It just kills me to see that the fog is still with us and I can't stop thinking about the images I'm not making. All because I was careless.