Free Sports & Recreation
The [Lodi Junior Giants](https://lodikidsactivities.com/programs/lodi-junior-giants) runs an 8-week summer program for ages 5-13 with zero registration cost. Co-ed baseball and softball focused on character development and bullying prevention. Games happen on weekdays plus Saturdays, and they provide pitching machines and all equipment.
For year-round play, the [Stockton Ports Kids Club](https://lodikidsactivities.com/programs/stockton-ports-kids-club) offers free membership for kids 12 and under. You get field box tickets to all 11 Sunday home games, plus meal deals and game day activities. Parents can add an optional package for $65 if they want guaranteed seats.
If your kid's into tee-ball and on the autism spectrum, the [Lodi Tee-Rexes](https://lodikidsactivities.com/programs/lodi-tee-rexes) is a completely free, inclusive league created by a longtime Lodi coach. Reach out to them directly for schedule and location details.
Free Learning & Enrichment
The [Lodi Library Homework Help](https://lodikidsactivities.com/programs/lodi-library-homework-help) program runs Tuesday and Wednesday afternoons from 2:30-5:30 PM with background-checked volunteer tutors helping K-12 students with math, English, and social studies. No registration required. Just show up.
[OEG Camp Summer](https://lodikidsactivities.com/programs/oeg-camp-summer-both-june-july-2026) is a free full-day program (7 AM-6 PM) for teens ages 12-16 at Legion Park's Lee Jones Building. You can enroll for June, July, or both months. It's run through Lodi Parks & Rec and fills up, so register early.
The [Lodi Boys & Girls Club](https://lodikidsactivities.com/programs/lodi-boys-girls-club) offers [Teen Programs](https://lodikidsactivities.com/programs/teen-programs) with completely free membership for ages 13-18, Monday through Friday from 2-6 PM (extended to 7 PM some days). Leadership, fitness, arts, and social skills in a welcoming after-school environment.
Free Museum & Cultural Programs
[WOW for All: Free Museum Days](https://lodikidsactivities.com/programs/free-admission-days-at-the-world-of-wonders-science-museum) gives you four select Sundays in 2026 with free all-day admission to the World of Wonders Science Museum (10 AM-5 PM). Great for first-time visitors or for WOW members who want to bring a guest.
The [San Joaquin County Historical Museum](https://lodikidsactivities.com/programs/san-joaquin-county-historical-museum) in Micke Grove Park is free for members, and offers $5-$7 admission for others, but it's worth noting because memberships pay for themselves quickly if you visit more than once. Open Thursday through Sunday, 10 AM-4 PM.
For toddlers, [Lodi Lake Tot Nature Programs](https://lodikidsactivities.com/programs/lodi-lake-tot-nature-programs) costs just $5 per adult-child pair (ages 2-4) on Monday mornings at the Lodi Lake Amphitheater. Docent-led sessions explore nature along the Mokelumne River through touch, sound, smell, and sight.
What to Do Next
Pick 2-3 programs that match your schedule, then register or show up. The library and museum programs require zero commitment. Sports leagues and camps fill up fast, especially Junior Giants and OEG Camp, so don't wait if those fit your summer plans.