The only time I don't enjoy hiking is during the summer. Too many bugs, too sweaty, and I get sunburn no matter what I do. Autumn is perfect, winter is a close second, and early spring comes in third. I agree that anything above 70 degrees is uncomfortable on a hike!
This is how I feel too..it's the heat that I won't hike in. I HATE humidity with a passion. Cool and dry is how I like it. Once it hits 75 and above I head for my kayak. The cooler the better..all you gotta do is throw on a sweater!
When the snow hits I tend to hit the slopes. I love to go downhill skiing. Unfortunately around here we don't get ENOUGH snow for my liking. But when it does snow I pull out the snowshoes and hit the trails. Snow makes everything more beautiful. I like to go hiking when it's actually snowing. It's awesome!
After the leaves fall off the trees I don't find things very scenic and snow changes all that. Last year I was snowshoeing and saw a bunch of people cross country skiing on the trails. A lot of places have dedicated trails for just X country skiing and you can rent skis and I want to try that this year. I'm hoping for another snowy winter! The more I can get out in the winter, the better I feel.
I've done cold weather camping..camped down into the 20s and 30s. Now that I'm backpacking I want to do this in the winter. Fortunately I have good cold weather gear now so I'm going to give it a try.
My plan is to locate out west in 2016 and cold/snow is a possibility in higher elevations even in mid summer. It's something I look forward to.