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U.S. Temperature, 1901–2023

Published by U.S. Environmental Protection Agency, Office of Atmospheric Programs, Office of Air and Radiation | U.S. Environmental Protection Agency | Metadata Last Checked: January 27, 2026 | Last Modified: 2024-06-21T00:00:00.000+00:00
This indicator shows how annual average air temperatures have changed in different parts of the United States since the early 20th century (since 1901 for the contiguous 48 states and 1925 for Alaska). The data are shown for climate divisions, as defined by the National Oceanic and Atmospheric Administration. For more information: www.epa.gov/climate-indicators

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