Halloween is Tues., Oct. 31 but there are plenty of opportunities to get in the spooky spirit before then in Dorchester, Mattapan and beyond.

Cedar Grove Cemetery Annual Harvest Festival

The gold standard for Dot Halloween fun. Sun., Oct. 29 from 1-3 p.m. Free and open to the public. Kids are encouraged to wear their costumes. Piñata’s, drink apple cider, eat some popcorn and get some balloons, and be prepared for a horse drawn carriage ride for a tour of the scenic Cedar Grove Cemetery. For more information, visit cedargrovegardens.com or contact Janet Harrold at 617-669-8366.

BPD District B-3 Haunted House

Fri., Oct. 27 from 4-8 p.m. Join Captain Haseeb Hosein and the Area B-3 Officers for food, entertainment, music, dance party, fun activities, and — of course — Halloween candy! Costumes are encouraged.

Pumpkin Float in Pope Park
The 16th annual Neponset Pumpkin Float will begin at 6 p.m. on Thurs., Oct. 26 at Pope John Paul II Park in Dorchester. Sponsored by DCR and Neponset River Greenway Council, the event is free, but you must bring your own carved pumpkin (no bigger than 8 inches). Candles and floats are provided. Check-in begins at 5:30 p.m. and costumes are encouraged.

BYCF Skate Night at Chez Vous

Fri., Oct. 27 from 4-7 p.m. at Chez Vous, 11 Rhoades St., Dorchester. Youth ages 6-17 are invited to show off their costumes and have fun roller skating. Candy giveaway and costume contest. RSVP to Erika Butler at erika.butler@boston.gov or call 617-635-4920 ext. 2314.

BCYF Holland Haunted House

Sat., Oct. 28 from 5-8 p.m. at 85 Olney Street in Dorchester. Join them for a night of fright and fun. They dare you! For more information, e-mail HollandCC@boston.gov.

Frog Pond Pumpkin Float 2017

Get-your-float-on at the Boston Common Frog Pond on Fri., Oct. 20 from 5-8 p.m. Refreshments, music and child-focused activities will make this a frightfully-fun way to celebrate Halloween! Free and open to the public. Make sure to BYOP. For more info, visit bostonfrogpond.com.

Halloween Trunk O’ Treat on River Street

Thurs., Oct. 26 from 4-6 p.m. Join the Boston Police Peer Support Unit, 251 River St., Mattapan for fun and festivities. Police cruiser trunks will be decorated for Halloween. There’ll be music, snacks, and a prize for the most terrifying trunk. For more info, e-mail kerry.ryan@pd.boston.gov.

Halloween Hunt at Adams Street BPL

Wed., Oct. 25 at 4:30 p.m. Find clues on a spooky scavenger hunt and collect treats along the way. Recommended for ages 3 and up. Please wear a costume!

Boston Grown-Up’s Museum: Fright Night

Thurs., Oct. 26 at 7:30 p.m. We’re throwing open the doors to Boston Children’s Museum to those who are young at heart. Get ready for some spooky surprises, and dress up in some playful guises. Look wacky and crazy, wicked or nice, dress up in a costume that will suffice. Enjoy the exhibits and explore all you want, but be careful of those who may choose to haunt! Enjoy a full cash-bar and tasty treats for purchase. Big Kids Only (21+) you must bring valid ID. Tickets: $25 Questions? For inquiries on group rates please email BGM@BostonChildrensMuseum.org or call 617-986-3649.

Zoo Howl at Franklin Park

Sat., Oct. 28 and Sun., Oct. 29 from 11-3 p.m. at 1 Franklin Park Rd., Dorchester. Creepy crafts, ghoulish games, costume contests, haunted maze, face painting (Saturday only), and other fun activities. General admission rates apply to Halloween events. For more info: zoonewengland.org/engage/zoo-howl.

Halloween Party at Standish Village

Tues., Oct. 31 at 2:30 pm at Standish Village Assisted Living and Memory Support Community, 1190 Adams Street, Dorchester. Join for refreshments, tricks, and treats galore, as well as a costume contest!