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Heating and Cooling Degree Day by State, 1960–2023 Versus 1895–1959

Published by U.S. EPA Office of Air and Radiation (OAR) - Office of Atmospheric Programs (OAP) | U.S. Environmental Protection Agency | Metadata Last Checked: January 27, 2026 | Last Modified: 2019-11-09T00:00:00.000+00:00
This indicator shows how heating and cooling degree days have changed by state, based on a comparison of the first 65 years of available data (1895–1959) with the most recent 64 years (1960–2023). For more information: https://www.epa.gov/climate-indicators.

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