No, Hurricane Harvey was not a Category 5 storm when it made landfall in 2017. It was a Category 4 hurricane.
The last major hurricane to make landfall in the U.S. at major hurricane status was Hurricane Harvey in August 2017. It struck Texas near Corpus Christi at category 4 strength.
Hurricane Hugo made landfall in South Carolina on September 22, 1989, as a Category 4 storm.
Hurricane Ike, which hit Texas on September 23, 2008 as a strong category 2 hurricane with a storm surge equivalent of a category 5 hurricane. The storm caused approximately 20 billion dollars in damage.
at it's strongest point, a category 4 hurricane with sustained winds of 145 mph. at the time it made landfall in Texas, a category 2 hurricane with sustained winds of 110 mph.
Hurricane Rita formed in the Gulf of Mexico on September 17, 2005, less than three weeks after the landfall of Katrina, and threatened the area with another Category 5 hurricane. She became a hurricane on September 21, made landfall on September 23, and dissipated on September 26. Fortunately, Rita was only a category 3 when she hit on the Texas-Louisiana border a week later. Rita prompted the evacuation of Houston, which was the largest civil evacuation in US history.
Hurricane Betsy was a Category 3 storm at landfall, hitting Louisiana in September 1965.
Hurricane Sandy was a category 1 hurricane at landfall in Jamaica, and a category 3 storm at landfall in Cuba and the Bahamas. It hit the U.S. east coast with category 1 winds.
when hurricane Andrew hit Florida in 1992 it came in a cat. #5
The last major hurricane to make landfall in the U.S. at major hurricane status was Hurricane Harvey in August 2017. It struck Texas near Corpus Christi at category 4 strength.
Hurricane Harvey was a very destructive hurricane that made landfall around Rockport, Texas as a Category 4 hurricane on 25 August 2017. It stalled in that general area for several days wreaking devastation through winds, storm surge, rain - leading to massive flooding.
Hurricane Katrina made landfall on the morning of August 29 in southeast Louisiana and again near the Louisiana/Mississippi state line as a Category 3 hurricane.
Hurricane Charley made three landfalls. It first hit Cuba on August 13, 2004 at category 3 intensity. Its second landfall was later the same day in southern Florida as a category 4 storm. Charley made a final landfall in South Carolina on August 14 as a category 1 hurricane.
By the time it made landfall in Louisiana it was a category 3. At one point it was a C5
Hurricane Gustav made landfall near New Orleans, Louisiana in the early morning of September 1, 2008. It initially struck as a Category 3 storm but due to its interaction with land was downgraded to a Category 2.
Hurricane Hugo made landfall in South Carolina on September 22, 1989, as a Category 4 storm.
Hurricane Andrew was a category 5 storm, which is the highest category on the Saffir-Simpson Hurricane Wind Scale. It made landfall in Florida on August 24, 1992, with winds exceeding 165 mph, causing widespread devastation.
Sandy was a hurricane for most of its time, peaking as a category 2 hurricane before striking Cuba. At landfall in the U.S. Sandy was still at hurricane intensity but had transitioned into a post-tropical cyclone.