Haha indeed! Most likely I will only be flying one battery each time, I am still a very newbie to drone flying so I don't have any commercial shoots/jobs going yet. I can see having to stay out in the open if it's a job that you can't fly the...
I wouldn't rule out cold days entirely. There are folks on the forum who fly actively in Alaska and similar climates throughout the year. Just watch for periods when the wet-bulb temperature is near the dry-bulb temperature, i.e. very high...
Icing is a huge concern. On a drone it just adds weight but it can add up.
Don't fly through clouds.
Flying near waterfalls is where you could find freezing mist. That can accumulate very fast.