Powell's dinner is scheduled for the National Building Museum, with the ceremony led by Sen. Claire McCaskill, D-Mo. and former Sen. John Warner, R-Va.
The vice president-elect will be the man of the hour at Union station, honored by Democratic Virginia Gov. Tim Kaine and Sen. Chuck Hagel, R-Neb.
On Monday night, Michelle Obama and Jill Biden, joined by Obama daughters, Sasha and Malia, will host a children's inaugural event called "We Are the Future" at the Verizon Center downtown.
ABC News' David Kerley, Jake Tapper, Jennifer Duck and Sunlen Miller contributed to this report.