Tuolumne County, CA Events Event Categories Cook Offs Festivals Film Festivals Quilt Shows Tuolumne County Event OutlookAugust 16, 2024 Film Fest Twain Harte - Twain HarteSeptember 7, 2024 Sierra Apple Festival - SonoraSeptember 14, 2024 49er Festival and Chili Cook-off - Groveland View our full calendar of events