What does the data show?  A Heating Degree Day (HDD) is a day in which the average temperature is below 15.5°C. It is the number of degrees above this threshold that counts as a...

This API provides data back to 1990 and projections annually, monthly, and quarterly for 18 months. It provides data on U.S. heating degree days and cooling degree days. Users...

The API provides data back to 1990 and projections annually, monthly, and quarterly for 18 months. Summarizes the outlook for demand, supply and prices for petroleum, natural...

Annual Heating Degree Days (annual sum of the number of degrees that the daily mean temperature is below 15.5°C each day), projections for a range of future warming levels from...