Climate Zones and Roofing

Roof Online Staff

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Image courtesy US Department of Energy.
US climate zones. Courtesy US Department of Energy.
US climate zones. Courtesy US Department of Energy.

1. General: An updated list of climate zones for every county in the United States can be seen at this page: Section C301 Climate Zones. This is from the 2018 International Energy Conservation Code, and is about as official as you can get. On the UpCodes website.

2. General: For a list of American cities and what IECC climate zone they are in, see 1,000 Largest US Cities – Climate Zones.

3. GeneralA brief history of recent developments in US climate zone designations, made available by the US Department of Energy