How late in the spring in an avg year does all the snow melt at the summit of Mt Katahdin in Maine?

the last snow most years is gone by June 1st most years real snow cover is gone in May

Some may not believe in global warming at all, others don't believe it is man made. But one thing is true you have other climatologists on the other side that say we've been on a global cooling trend since the 90's. Also it is called "Global warming" not local or area warming, so happening in one small area has nothing to do with it.