The small event, with about 25 attendees, will take place at the Powerhouse, a former paper mill in Georgetown. Brown's running mate, Howard County Executive Ken Ulman, will also attend.
"I'm humbled to have Vice President Biden's backing and support," Brown said in a statement. "This event continues to build on the momentum we need for victory in November."
Brown, the Democratic nominee to replace Gov. Martin O'Malley, will face Republican Larry Hogan in this fall's election. Brown, who is likely to out raise Hogan in deep blue Maryland, brought former President Bill Clinton to Maryland for a fundraiser in May ahead of the state's primary.
A campaign official said the event is expected to raise up to $350,000 for the Brown-Ulman ticket and the Maryland Democratic Party.