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Showing results for tags 'CDD'.
Looking at climate through the lens of degree days (base 65 F US, 64 F/18 C INTL) Cooling degree days occur any time the mean temperature of the day is more than 65 F/18C. Heating degree days occur any time the mean temperature of the day is less than 65 F/18C. A good way to measure climates is to look at the mean HDDs and CDDs during a typical year. We can also sum the two to get an idea of how relatively comfortable a climate is, and how much energy is required in that climate to heat and cool a building through a typical year. Hottest locations in the world by CDD: Mecca, Saudi Arabia