Cumulative number of degrees that daily average temperature over a given period below a specified threshold (here 65°F) © 2026 The World Bank Group,

https://data360.worldbank.org/en/indicator/WB_CCKP_HDD65 The cumulative number of degrees that the daily average temperature over a given period is below a specified threshold (here 65°F), which is a measurement designed to quantify the demand for energy needed to warm a building. https://data360.worldbank.org/en/search © 2026 The World Bank Group,