IECC Report Shows Warming Climate Across U.S.
Pro Builder
NOVEMBER 5, 2021
The Upper Peninsula in Michigan also lost all of its CZ-7 counties but still has a toehold in that zone because one of the CZ-6 counties flipped to 7. Minnesota, which was about half CZ-6 and half CZ-7 now has some CZ-5 in the south and about a third of the state in CZ-7.
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