Suggestion...

Call the best, most reputable painting contractors in the area and ask
the what paint they use. Look for premium _regional_ brands formulated
to your climate. For example, here in Dallas there are a few regional
brands that are formulated especially for the Texas heat. The national
brands are formulated for use all over the country and don't hold up as
well as those specially made for the climate.

Snow versus 105 degree heat require different chemistry.