Snowy days are great! Love skiing in a blizzard (wish we had more in New England), and under the guns is just as good, if not better. Rain is OK now that I have Goretex pants and jacket and high Goretex snowboard mittens that keep the water from seeping uphill along my arms. Frigid days are fine, 0 degrees Farenheit with 25 mph wind is fine because I have a face mask and all the warm stuff elsewhere also to take care of it. All that gets cold anymore is my toes, and I just take a break and warm them up, then put new toe warmers inside my boots. Boot gloves help the most. Batteries don't do diddly.
I once skied in fog so thick I couldn't see beyond my ski tips. I am not exaggerating. I crept down with another skier for a long way, one yard at a time, trying not to slide off the side of the trail, while teenagers and 20-somethings barrelled down the slopes as if the fog wasn't there. That's just plain stupid. I don't believe they had X-ray vision, nor that their eyes were that much better than ours, even if they believed that was the case. Once down at the lodge, I went inside to protect myself from them, and will the next time that happens. So I guess that's where I draw the line.
I don't get the fascination with "bluebird" days. Some people judge the quality of the skiing by the color of the sky. I judge it by the condition of what's under foot. Honestly, I don't look up much. Focus is down the hill, eyes on the prize. Here in New England, mostly it's gray anyway.