Degree Days Statistics

What are degree days?

Degree days are a unit of measurement used widely in the energy industry as a way to relate outdoor air temperatures to energy consumption (or the energy needed for heating or cooling). Degree day statistics are used to make weather assumptions when assessing the potential for energy efficiency activities and to make weather adjustments when conducting program evaluations.

Where can you find degree-day data?

There are several options for accessing degree day information, including:

• The National Weather Service
• DegreeDays.net *specifically aimed at the energy-efficiency professionals
• WeatherDataDepot