A Few Annual Events: Spring Barrel Tasting in April, Wine Country Spring Fair In May, Farmers Market in May through harvest, Kestrel Festival in June, Old Fashioned July 4 Weekend, Art Walk and Wine Gala Wine tasting in July, Prosser State's Day, The Great Prosser Balloon Rally, Caren Mercer-Andreason Street Painting Festival and Annual Harvest Festival every September, Family Christmas Festival.