We are not seeing major hurricane increases due to global warming or any other reason. The last major hurricane (defined as a Category 3 or above) to hit the US mainland was Hurricane Wilma, which made landfall in Florida on Oct. 24, 2005.
Although a major hurricane typically strikes the US about once every two years, no major hurricanes have made landfall in the US for more than 10 years.
The second longest stretch between major hurricane strikes was between the major hurricane that struck in August 1860 and the one that struck in September 1869, NOAA records show. The third longest stretch was between the major hurricane that struck in September 1900 and the one that struck in October 1906.