If you combine "warm weather" and dome stadiums, that would be:
Arizona
Atlanta
Carolina
Dallas
Detroit
Indianapolis
Jacksonville
Los Angeles
Los Angeles
Miami
Minnesota
New Orleans
Oakland/Vegas
San Francisco
Seattle (it gets cold in the PNW but the winters are very very mild so this is borderline imo)
Tampa Bay
Tennessee
Washington (another borderline one)
Which is a little over half. idk that it's much of a selling point, most players aren't going to the NFL and even including the ones that are, most would probably enjoy some sort of paradise for 4-6 years before the potential of living/playing in green bay, but I also don't think weather is just that big of a deciding factor for most kids. Certainly not for the ones that we want on our team, obviously.