2015 Was The Second Hottest Year On Record For The U.S.

Last year was also the 19th consecutive time that average temperatures in the U.S. exceeded the 20th century average, which means everyone born after 1996 has only experienced warmer than normal temperatures. NOAA also reported that December was record warm for the contiguous United States, with temperatures at 6°F above average. Twenty-nine states had their warmest December on record, while no state was record cold. The last time the country saw a warmer December was in 1939.
http://thinkprogress.org/climate/2016/01/08/3737535/2015-second-hottest-year-usa/