I'm in North Carolina and was in the higher mountains yesterday shooting ice and snow where it was around 15 degrees F. Usually I use the slow rewind mode on my automatic cameras whenever it's below 20 or so, but forgot yesterday and went ahead rewinding at full blast. Now I know +15 F is short-sleeve weather for many places right now and I'm guessing I have nothing to worry about, but it got me thinking about static electricity issues and wondering what anyone's experiences have been. Most of the information I find is the usual 'rewind and advance film slowly in the cold', but what is cold? Is anything above 0 F worthy of concern, or do you have to get well below zero? And I know the real issue is the humidity, so 15 here in the southeastern US is different from 15 in Arizona. I'm partly just curious and trying to get a feel for how big a concern static (and tearing film) is in the temperatures I typically encounter, but I also wonder about shooting cold-weather sports or wildlife - if it's 10 degrees out are you better off going slow on the film for fear of generating static, or can you fire away to catch key points of the action, knowing that there's no problem till the thermometer hits -20?