May has officially arrived, and with it, the vibrant energy of spring has taken over Central Jersey. Whether you’re a fan of the arts, a history buff, or just looking for a way to get the family outdoors, the May 2026 calendar for the Mercer County area is packed with local favorites.
From the return of major festivals to intimate gallery talks, here are the top events you shouldn’t miss this month.
1. The L.E.A.D. Fest State Fair (West Windsor)
When: Throughout May 2026
Where: Mercer County Park Festival Grounds
The L.E.A.D. Fest State Fair is back for its annual run, bringing classic carnival vibes to the heart of West Windsor. This is the ultimate “state fair” experience right in our backyard—think Ferris wheels, live shows, and every kind of fried fair food you can imagine. It’s a major fundraiser for Law Enforcement Against Drugs, so your fun supports a great cause.
2. Mercer County Teen Arts Festival (West Windsor)
When: May 8, 2026
Where: Mercer County Community College
Witness the next generation of New Jersey talent! This festival is a massive showcase of teen-made art, featuring live musical performances, theatre snippets, and gallery exhibits from middle and high schoolers across the county. It’s a high-energy day that’s open to the public and perfect for anyone who loves supporting local creative youth.
3. “Mrs. Christie” at McCarter Theatre (Princeton)
When: Various dates through May 15, 2026
Where: McCarter Theatre Center
For those who enjoy a bit of mystery and meta-theatre, don’t miss the run of Mrs. Christie. This play explores the real-life 11-day disappearance of Agatha Christie in 1926. It’s a clever, witty production that has been a highlight of the spring theatre season.
4. Mother’s Day Weekend at the Vineyards (Various)
When: May 9–10, 2026
Where: Terhune Orchards & Unionville Vineyards
Celebrate Mom with a glass of local wine!
- Terhune Orchards is hosting a “Mother’s Day Planting Make ‘n Take” on May 9th, where kids can help plant a pot for Mom.
- Unionville Vineyards is celebrating with the release of their Hunterdon Mistral wine all weekend, complete with live music and vineyard tours.
5. Revolution Up Close: Historical Living History (Trenton & Washington Crossing)
When: May 9 & May 24, 2026
Where: Old Barracks Museum & Washington Crossing Historic Park
History comes alive this month with two major events:
- May 9: Head to Washington Crossing for “Soldier Saturdays,” focusing on the maritime services and Continental Marines of the American Revolution.
- May 24: Join the annual Memorial Day Ceremony at the Revolutionary War Soldiers’ Gravesite behind the Thompson-Neely House for a somber and beautiful colonial-style observance.
Bonus: Quick Hits & Nature Walks
- Candlelight Concerts (Trenton): Catch “90s Hip-Hop on Strings” at the Historic Trenton Masonic Temple on May 16.
- Neighbor Day at Spring Lake (Hamilton): A community favorite at Roebling Park on May 17, featuring eco-friendly art projects and nature walks.
- Storytime on the Green (Princeton): Every Saturday morning at 10:00 AM on the Palmer Square Green—perfect for those with toddlers.
Plan Your May: Many of these events (especially the State Fair and McCarter Theatre shows) recommend buying tickets in advance.