Degree-hour
From Glossary of Meteorology
degree-hour
As used by U.S. Army Corps of Engineers, the departure (in °F) of the hourly temperature from a standard of 32°F, positive if above and negative if below.
Degree-hours may be accumulated (summed) over any period of time, depending upon the use to which they are applied.
Compare degree-day.
Compare degree-day.