non-resident CCW on vacation trip
If the goal is a vacation in a state where there is snow and where you may legally carry as a non-resident, then the answer is obvious -- come to Vermont, where anyone who may legally possess a firearm under Federal law (is not a convicted felon or a convicted domestic abuse misdemeanant, has never been involuntarily committed to a mental institution, never adjudged an alcoholic or addict , etc) may legally carry, open or concealed, without a license, or a permit, or a note from his/her home-room teacher.
And we *do* have snow in the winter (and well into the spring, unforch). And despite the creeps who represent us in Washington, almost all the Vermonters you will meet are really nice people. And we usually have the second-lowest per-capita rates of violent crimes like murder, armed robbery, etc. in the US. And the place is flat-out gorgeous year-round. The only problem you might encounter would be getting here overland; depending on where you start from, you'd probably have to pass through hoplophobic places like New Jersey, New York or Massachussets. I daresay you could manage that without breaking the law, but it would require some planning. IMO, it's worth the extra planning and attention. We've been here since 1972 and would never voluntarily live anywhere else (although we *have* been known to go to Arizona for a few weeks in the winter as we get older)...