He then addressed the media and denied rumors that he may run in the November election as a write-in candidate or independent.
It's not going to happen.
"I'm going to support the Democratic nominee," Fenty said. "I've got 106 days and he's got four years."
"For me, it's the beginning of the end of a great 10-year run," Fenty said, thinking back to his first campaign for Ward 4 Council back in 1999. "I'll be 40 in December, and that means I'll have spent exactly one-quarter of my life as an elected representative serving the people of the city I was born and raised in."
Fenty said he does not have another job lined up, but while he may no longer be the city's mayor come January, he expects to continue helping the city grow in some capacity.
"I was born and raised in Washington, D.C., and I have no intentions of ever leaving," Fenty said. "I'll be in this city for the rest of my life. My parents taught me that you have to be involved; that you have to give back to your community. It is unlikely that I'll be in a position as high-profile; probably not even in an elected office in D.C. But it is almost guaranteed 100 percent that I will continue to give back to my community in whatever way I can to make Washington, D.C., the greatest city on Earth."
Fenty said he has talked to Schools Chancellor Michelle Rhee a couple of times about transition to the new mayor, and that Rhee will work things out with whoever that will be. But in the end, "she will be the ultimate decider about her own personal future," Fenty said.
As for his own political demise, Fenty said the following:
"We made a lot of tough political decisions," during his years as mayor, he said. "A lot of those political decisions cost us political popularity. But there will be plenty of time for analysis over the next couple of days."