Port St. Lucie this weekend: the free Fall-O-Ween Market at Tradition Square, the Indian River Lagoon Science Festival and a full moon bat hike Sunday.

This weekend in Port St. Lucie: the free Fall-O-Ween Market at Tradition Square on Saturday, the Indian River Lagoon Science Festival in Fort Pierce and a full moon bat hike on Sunday evening.

Last checked Oct. 24, 2026. Listings come from each organizer’s own page; several were found on the county tourism office’s Visit St. Lucie calendar. Times can change, so check the organizer’s link before you go. Next weekend is Fall Fun Fest, Oct. 30 to Nov. 1: see our Fall Fun Fest page.

Saturday, Oct. 24

  • IL Mercato Fall-O-Ween Market, 1 to 7 p.m., Tradition Square, SW Meeting Street. Free. Vendors and candy for kids; come in costume. Tradition event page
  • Indian River Lagoon Science Festival, 10 a.m. to 3 p.m., Museum Pointe Park, 414 Seaway Drive, Fort Pierce. Free. Hands-on science about the lagoon, in a new park this year because of road construction. Festival site
  • Downtown Fort Pierce Farmers Market, 8 a.m. to noon, Marina Square, 101 Melody Lane, Fort Pierce. Produce, plants and food on the waterfront. Market site
  • Repticon, 10 a.m. to 4 p.m., St. Lucie County Fairgrounds, Fort Pierce. A reptile expo. Tickets
  • MidFlorida Card Expo, 10 a.m. to 6 p.m., MIDFLORIDA Credit Union Event Center. A trading card show. Event center listing
  • Mazda Miata Meet Up and Car Show, noon to 3 p.m., Summer Crush Vineyard & Winery, 4200 Johnston Road, Fort Pierce, with The Riptide Band. Winery event page
  • Behind the Scenes Tour, 2 p.m., St. Lucie County Aquarium, Fort Pierce. A 30-minute tour. County aquarium page
  • Night of the Thirsty Dead, from 7 p.m., Sailfish Brewery, Fort Pierce. A ticketed Halloween pub crawl for adults. Tickets
  • Comedian Bear Webb, 8 p.m., Sunrise Theatre, 117 S. Second St., Fort Pierce. Stand-up comedy. Sunrise Theatre

County nature programs Saturday morning, free from St. Lucie County Environmental Resources:

  • Beginners Kayak Class, 8 to 11:30 a.m., Petravice Family Preserve, Fort Pierce.
  • Poetry in the Woods, 9 to 11 a.m., Ancient Oaks Preserve, Fort Pierce.

Sunday, Oct. 25

  • Port St. Lucie Green Market, 9 a.m. to 2 p.m., MIDFLORIDA Event Center. Free, with free parking. pslgreenmarkets.com
  • Neighborhood Farmer’s Market at Tradition Square, 9 a.m. to 2 p.m. Free. Tradition event page
  • An Elton John and ’70s Dance Party, 1 to 4 p.m., Summer Crush Vineyard & Winery, Fort Pierce. Winery event page
  • Soft ‘N Easy Sunday Concerettes, 5 to 8 p.m., Priscilla’s Oasis on Orange, downtown Fort Pierce. Live music. Harmony Live Music schedule
  • Going Batty Full Moon Hike, 6:30 to 8 p.m., Spruce Bluff Preserve, 611 Dar Lane. Look and listen for bats; ages 8 and up. County nature programs

All weekend

  • Hamilton Farms’ Fall Festival, 10 a.m. to 4 p.m. Saturday and Sunday, Hamilton Farms, 1500 N. Header Canal Road, Fort Pierce. The last of its two festival weekends. Hamilton Farms event page
  • God Bless Roy Campanella, through Sunday, A.C.T. Studio Theatre, Stuart, about 10 miles south. Tom Flannery’s play. A.C.T. season
  • The Peaceful Pumpkin Patch, Saturday, The Old Citrus Estate, 6730 Holding Road. Reserved two-hour visits only, $15.95 a guest. Estate events page
  • Early voting runs 10 a.m. to 6 p.m. Saturday at the MIDFLORIDA Event Center, per its calendar. Sites and hours are on our voting page.

Regular weekend fixtures

  • Downtown Fort Pierce Farmers Market, Saturdays 8 a.m. to noon, Marina Square.
  • Port St. Lucie Green Market and the Tradition farmers market, Sundays 9 a.m. to 2 p.m.
  • Garage Sale at Minsky Gym, first and third Saturdays, 8 a.m. to noon; the next is Nov. 7. City page

More ahead: things to do this month, Halloween events and arts and exhibitions.

Send us your event

Holding something in Port St. Lucie next weekend? Email hello@portstluciedaily.com with the date, time, venue, price and a photo. Listings are free.

Frequently asked questions

What is there to do in Port St. Lucie this weekend?

Saturday, Oct. 24, brings the free IL Mercato Fall-O-Ween Market at Tradition Square and the Indian River Lagoon Science Festival in Fort Pierce. Sunday, Oct. 25, has two farmers markets, the last day of the Hamilton Farms fall festival and a full moon bat hike at Spruce Bluff Preserve.

What is free in Port St. Lucie this weekend?

The Fall-O-Ween Market, the Indian River Lagoon Science Festival and the Sunday Green Market and Tradition farmers market are free to attend, their organizers say. St. Lucie County’s guided nature walks are free programs.

When is the Fall-O-Ween Market at Tradition Square?

1 to 7 p.m. Saturday, Oct. 24, at Tradition Square, SW Meeting Street. General admission is free, and organizers hand out candy to children, Tradition says. Come in costume.