Cities in WA, OR, ME, VT, NH, MI, MT, ID, WY — average summer highs in the 70s or low 80s.
For people who can't take Sun Belt heat. The states here all have July highs below 85°F across most of the state.
Note: most of these states have real winters in exchange. The classic 'no hot summer, mild winter' combo (Pacific NW + Hawaii) is rare and expensive.
5Rochester, NHBoston-Cambridge-Newton · pop 33,59876RisingNHstate 9Wyoming, MIGrand Rapids-Kentwood · pop 78,55975RisingMIstate 10Holland, MIGrand Rapids-Kentwood · pop 35,02375RisingMIstate 12Walker, MIGrand Rapids-Kentwood · pop 25,92175RisingMIstate 14Hayden, IDCoeur d'Alene · pop 16,92475RisingIDstate 17Portage, MIKalamazoo-Portage · pop 49,97574RisingMIstate 23Kentwood, MIGrand Rapids-Kentwood · pop 54,76873RisingMIstate 27Arlington, WASeattle-Tacoma-Bellevue · pop 21,95973RisingWAstate 34Lynden, WABellingham · pop 16,78372RisingWAstate 36Lansing, MILansing-East Lansing · pop 114,33671RisingMIstate 37Dearborn, MIDetroit-Warren-Dearborn · pop 106,37771RisingMIstate 39Pontiac, MIDetroit-Warren-Dearborn · pop 62,52871RisingMIstate 40Dover, NHBoston-Cambridge-Newton · pop 33,90971RisingNHstate 42Auburn, MELewiston-Auburn · pop 25,20071RisingMEstate 43Inkster, MIDetroit-Warren-Dearborn · pop 25,10871RisingMIstate 46Saco, MEPortland-South Portland · pop 21,06471RisingMEstate 47Lebanon, ORAlbany-Lebanon · pop 19,95071RisingORstate 50Nashua, NHManchester-Nashua · pop 91,85170RisingNHstate