* Data are based on temperature departure from the 20th century average. ** These figures are preliminary. The contiguous U.S. (CONUS) are the 48 continental states and the District of Columbia.
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Global warming: the warmest consecutive 12-month periods in the U.S.
This statistic represents the warmest consecutive 12-month periods in the contiguous U.S. as of April 2012, based on temperature departure from the **** century average. The period between November 1999 and October 2000 was around *** degrees Fahrenheit warmer than the **** century average.
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National Oceanic and Atmospheric Administration. (May 8, 2012). Warmest consecutive 12-month periods in contiguous United States as of April 2012, based on temperature departure* (in Fahrenheit) [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved August 03, 2026, from /statistics/224253/the-warmest-12-month-consecutive-periods-in-contiguous-united-states/
National Oceanic and Atmospheric Administration. "Warmest consecutive 12-month periods in contiguous United States as of April 2012, based on temperature departure* (in Fahrenheit)." Chart. May 8, 2012. ÌÇÐÄÆƽâ°æ. Accessed August 03, 2026. /statistics/224253/the-warmest-12-month-consecutive-periods-in-contiguous-united-states/
National Oceanic and Atmospheric Administration. (2012). Warmest consecutive 12-month periods in contiguous United States as of April 2012, based on temperature departure* (in Fahrenheit). ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: August 03, 2026. /statistics/224253/the-warmest-12-month-consecutive-periods-in-contiguous-united-states/
National Oceanic and Atmospheric Administration. "Warmest Consecutive 12-month Periods in Contiguous United States as of April 2012, Based on Temperature Departure* (in Fahrenheit)." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 8 May 2012, /statistics/224253/the-warmest-12-month-consecutive-periods-in-contiguous-united-states/
National Oceanic and Atmospheric Administration, Warmest consecutive 12-month periods in contiguous United States as of April 2012, based on temperature departure* (in Fahrenheit) ÌÇÐÄÆƽâ°æ, /statistics/224253/the-warmest-12-month-consecutive-periods-in-contiguous-united-states/ (last visited August 03, 2026)
Warmest consecutive 12-month periods in contiguous United States as of April 2012, based on temperature departure* (in Fahrenheit) [Graph], National Oceanic and Atmospheric Administration, May 8, 2012. [Online]. Available: /statistics/224253/the-warmest-12-month-consecutive-periods-in-contiguous-united-states/
