Hmm. I was going to suggest the Rockwall, but you've done it. And Robson. Those were the two major hikes we did when we were there in 2013. I'll be watching to see if anyone has any other suggestions;I know we looked at some others but can't recall now what they were.
hah, so I noticed sense posting, befor posting I had looked at past weather and temps where about they would be where I live, but I did more research and found earliest that would be fun without shoes or skis would be june.
for what reasons? cold snow? or both? and is fall bad? I know october wasn't bad in northern yellowstone this last year but people said the snow was late.
Cold can be an issue at altitude at any time. The real issue is snow. When we went to the Canadian Rockies in 2013, we did the Rockwall July 15-20--and that was the first week the whole trail was open. We didn't run into much snow; I think the real issue is the mud and run-off during melt-out. That was also the spring (June) there were floods in the area, and some trails didn't open at all.
Fall can be a great time in the mountains, but depending on where you are, you need to be prepared for snow any time after Labor Day. Usually September is all good in the North Cascades, for example, but it CAN get nasty.
I had a grad-school hiking buddy who always liked to cross the Sierra crest on the summer solstice. We definitely did some post-holing on those trips, though I will say that it was great to be in some of those places with no one around. However, I missed a lot of the spectacular granite and lakes, since they were often under 6' of snow.
last weekend I was camping and fishing and my fish froze outside overnight lmao whent ot bed at 38 f didn't bother to look when I woke up the first time, it seems in my location it's going to be a cold summer, it's looking likely to have snow in july again, wich could be cool
my biggest problem so far seems like getting a party of four together to go into some areas in the national park