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My mom had a summer house in Tenants Harbor ME on a cliff with the waves of Penobscot Bay breaking below. That close to the ocean, you didn't need air conditioning. Even 1/2 mile inland could get really hot.
As someone who lives without central AC, what a lot of people don't consider is that the overnight lows matter just as much, if not more so, than daily highs. Overnight temps need to consistently get below 65F during the summer to adequately cool down the living space.
You don't need it in northern New England, or probably the Adirondacks to the west. I think the biggest factor is the cooling down at night. In VT/NH, overnight lows are under 60 for most nights in the summer. You'll have 3 or 4 uncomfortable nights a year, but usually open your windows and you're fine.
To an extent this was true in Boston and Rhode Island as well. I was ok without A/C in Boston, but I had a drafty first-floor apartment. It's very different in NJ where I live now.
Anywhere along Lake Superior. E.g. Duluth and the Upper Peninsula.
The eastern shore of Lake Michigan is a close second. But similar to California, the climate is only moderated for a short distance inland. After that, it heats up quick. And the winds will occasionally flip and bring in that warm inland air.
Anywhere along Lake Superior. E.g. Duluth and the Upper Peninsula.
The eastern shore of Lake Michigan is a close second. But similar to California, the climate is only moderated for a short distance inland. After that, it heats up quick. And the winds will occasionally flip and bring in that warm inland air.
Not quite the case for far northern Wisconsin on the Canadian Shield as the elevation is a good bit higher at around 1,700 ft. to nearly 2,000 ft. elevation. Low temperatures are actually often cooler than areas that are in close proximity to Lake Superior.
Northern New Hampshire, Vermont, and most of Maine you'd be OK without it but you better have it though in the Manchester-Nashua corridor. I stayed in Manchester this July and it hit 100 degrees with lows in the mid 70s. The other days weren't much better in the mid 90s and it felt like a blast furnace stepping out of my hotel. Maybe my next summer vacation there in NH I'll have better luck but I was surprised visiting from FL.
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