From NOAA’s National Centers for Environmental Information, which reports:
During February, the average contiguous U.S. temperature was 41.2°F, 7.3°F above the 20th century average. This ranked as the second warmest February in the 123-year period of record. Nearly one-quarter of the U.S. was record warm in February. Only February 1954 was warmer for the nation at 41.4°F. Between December 2016 and February 2017, the average temperature across the contiguous U.S. was 35.9°F, 3.7°F above average, the sixth warmest winter on record.