Head to Roseville for their Annual Rosefest Celebration, June 24th through 30th for tons of family fun in the community!. Rosefest is Roseville’s annual community celebration, and this year’s dates are June 24th – 30th. This year’s Party in the Park and fireworks finale, which has historically been held on July 4, will be held on Saturday, June 29. This better accommodates the public safety needs of the large-scale event and encourages more Roseville residents to attend.