Whether or not the record holds for the latest first Atlantic hurricane is up to Humberto, currently a strengthening tropical storm.
Since the satellite era began during the early 1960s, the latest the first hurricane of the season formed was 2002's Gustav on Sept. 11. Gustav was upgraded from a tropical storm to a minimal hurricane that Wednesday midday, shortly after 8:00 a.m. EDT.
Meanwhile, there have been no hurricanes thus far during the 2013 season in the Atlantic. However, Humberto, near the Cape Verde Islands Monday has a chance at becoming a hurricane during the middle of this week.