The 4-H year runs from September 1 to August 21, and any youth member ages 5-18 as of September 1 may join. Families can join at any time before May 1. May 1st is the last day to add or drop projects to enter into our 4-H Achievement Days. The sooner you are enrolled, the more activities members are able to participate in, such as judging events done throughout the winter months.