Warrens Cranberry Festival 2025. The 50th annual warrens cranberry festival, or cranfest, is set to take place in warrens, wisconsin from sept. The 51st annual warrens cranberry festival is sept.

Always the last full weekend in september! The festival is perhaps best known for its shopping and boasts over 800 arts & crafts booths (unusual works of art), 300 flea &.