Foul weather, a group leader’s illness, insufficient sign-ups — many situations can cancel or cause schedule changes for events and outings. To be certain of your plans, always check before you go.

Animal events

Aquarium Halloween

SAT-SUN Creepy games and activities, treats, pumpkin-carving demonstrations on land and underwater with Aquarium divers, 10 a.m.-5 p.m., Satuday-Sunday, The Seattle Aquarium, 1483 Alaskan Way, Seattle; $17.95-$32.95 (206-386-4300 or seattleaquarium.org).

Pumpkin Bash and Trick-or-Treating

SAT-SUN Pumpkins for hippos, bears, Malayan tigers, lemurs and other animals, trick-or-treating for kids, one child 12 years and younger in costume admitted into the zoo free with paid adult, 9:30 a.m.-3 p.m., Saturday-Sunday, Woodland Park Zoo, 5500 Phinney Ave. N., Seattle; free with zoo admission or membership (206-548-2500 or zoo.org).

Benefits

Gear Drive

SAT Survive-the-streets event benefiting those who are homeless and taking steps toward housing and job placement, items for auction, food, craft beer and wine, 6:30-9:30 p.m., Saturday, Rotie Cellars Tasting Room, 3861 First Ave. S., Seattle; $35 (survivethestreets.org).

Dance

Thrill the World

SAT 13th annual simultaneous Thriller Dance benefiting Dauntlez, 3 p.m., Saturday, Occidental Park, 250 Occidental Ave. S., Seattle; free (meetup.com/seattlethrillers).

Fairs/Festivals

Diwali: Lights of India

SAT Celebration that marks the Indian festival of light, art gallery showcasing Madhubani paintings and a workshop where participants can create their own works of art, performances, henna, food and more, noon-6 p.m., Saturday, Seattle Center, 305 Harrison St., Seattle; free (seattlecenter.com).

Museum events

smART Films Series: “Childhood Framed”

TUE Film series about the mysteries of childhood, screenings are followed by a facilitated discussion, “The Spirit of the Beehive” (1973), 12:30 and 7:30 p.m., Tuesday, Bainbridge Island Museum of Art, 550 Winslow Way E., Bainbridge Island; $10-$12, students free with ID (biartmuseum.org).

Dia de los Muertos Ofrenda

ONGOING Dia de los Muertos celebration, traditional ofrenda, visitors can add their own mementos, alter is accessible to the public during museum hours through Nov. 3, 10 a.m.-6 p.m., Saturday, Bainbridge Island Museum of Art, 550 Winslow Way E., Bainbridge Island; free (biartmuseum.org).

Park events

Lake Hills Greenbelt Ranger Walk

SAT Learn about local history, native plants and wildlife on one-mile walk, 2 p.m. Saturdays through December, weather permitting, 2 p.m., Saturday, Lake Hills Greenbelt, 15416 S.E. 16th St., Bellevue; free (425-452-6993).

Sales/Shopping

Bazaar at Leif Erikson Lodge

SAT-SUN 113th bazaar, family fun, Nordic food, Norwegian desserts, raffles, prizes, book nook, silent auctions, clothes, jewelry and more, 10 a.m.-4 p.m. Saturday, 11 a.m.-4 p.m. Sunday, Leif Erikson Hall, 2245 N.W. 57th St., Seattle; free (leiferiksonlodge.org).

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Seasonal

Fall Lantern Festival

FRI Celebrate the creativity of the community and embrace the change of seasons with games, seasonal crafts, music, free sausages, ciders and other treats while supplies last, fall photo booth, all ages and dogs are welcome, 4:30-7:30 p.m., Friday, Freeway Park, 700 Seneca St., Seattle; free (freewayparkassociation.org).

Kirkland Zombie and Wine Walk

FRI Make your way through downtown Kirkland while sipping drinks from local wineries and breweries, register online, 6-9 p.m., Friday, starting at the Heathman Hotel, 220 Kirkland Ave., Kirkland; $25-$35 (kirklandchamber.org).

Pee Wee Monster Bash Carnival

FRI Fun for kids 5 and under, indoor, carnival-style activities, costumes welcome, register online, 10 a.m.-noon, Friday, North Kirkland Community Center, 12421 103rd Ave. N.E., Kirkland; $15 (kirklandwa.gov).

Zip Scare

FRI-SAT Scary, creepy, fun zipping in the dark, experience one suspension bridge and three zip lines, riders and platforms will be brightened with glow sticks, participants must be at least 8 years old and weigh between 60 and 250 pounds, 8-to-12-year-olds must be accompanied by an adult, tours start every 15 minutes from 6-8 p.m., preregistration encouraged, registration closes each night at 7 p.m., Friday-Saturday, South Bellevue Community Center, 14509 S.E. Newport Way, Bellevue; $35-$50 (bellevueziptour.com).

Fall Festival and Halloween Carnival, Fox Hollow Farm

FRI-SUN Pumpkin patch, haunted forest, food vendors, farm animals, hay maze, play area, 10 a.m.-5 p.m. Friday and Sunday; Halloween Carnival with trick-or-treating and activities, 11 a.m.-3 p.m. Saturday, Fox Hollow Farm, 12031 Issaquah-Hobart Road S.E., Issaquah; $50/up to seven people in one car (foxhollowfamilyfarm.com).

Nightmare at Beaver Lake

FRI-SUN and WED-THU Indoor/outdoor haunted experience made up of over 30 theatrical sets, bring a can of food and receive $1 off ticket price, family scare 7-7:45 p.m., full scare 8-11 p.m. Friday and Saturday, 8-10 p.m. Sunday, Wednesday, and Oct. 31, Beaver Lake Park, 2656 244th Ave. S.E., Sammamish; $12-$30 (nightmareatbeaverlake.com).

Oxbow Farm Pumpkin Festival

FRI-SUN Farm stand and pumpkin patch, 10 a.m.-5 p.m. Friday-Sunday; festival, kids farm tours, pumpkin slingshot, hay play, 10 a.m.-5 p.m. Saturday-Sunday, Oxbow Farm, 10819 Carnation-Duvall Road N.E., Carnation; free admission, fees for some weekend activities (425-788-1134 or oxbow.org).

Costumes on the Cobblestones

SAT Full day of fun across all nine-acres of the market, music, kids activities, pop-up murals, pumpkin decorating, costume parade for kids and pets, and more, 11 a.m.-4 p.m., Saturday, Pike Place Market, 1501 Pike Place, Seattle; free (pikeplacemarket.org).

Duwamish Youth Halloween Party

SAT Youth Halloween party with music, dancing, treats, costume contest and activities for the whole family, costumes are welcome, 5-8 p.m., Saturday, Duwamish Longhouse & Cultural Center, 4705 W. Marginal Way S.W., Seattle; free (duwamishtribe.org).

Halloween Party

SAT Dance backstage at McCaw Hall at Cinderella’s ball, food, drinks, costumes welcome, admission includes light hors d’oeuvres and two drink tokens, 21+, 10:30 p.m., Saturday, McCaw Hall, 321 Mercer St., Seattle; $25-$35 (seattleopera.org).

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Trick-or-Treat at PacSci

SAT Trick-or-treat at PacSci, Halloween costumes are welcome, haunted live science shows, creepy hands-on activities and more, candy, toys and other treats, 10 a.m.-5 p.m., Saturday, Pacific Science Center, 200 Second Ave. N, Seattle; $13.95-$25.95, free for members, included with admission (pacificsciencecenter.org).

Carnival on the Hill

SAT Classic carnival games with a Halloween twist, food, entertainment, tickets can be purchased at the front desk for certain activities, 11 a.m.-3 p.m.; Alex Zerbe Zaniac Comedy Show 3-4 p.m., Saturday, South Bellevue Community Center, 14509 S.E. Newport Way, Bellevue; free (bellevuewa.gov).

Haunted Movie on the Hill

SAT Enjoy popcorn and the movie “Coco” on the big screen, children 13 and younger must be accompanied by an adult, blankets and pillows are welcome, 7:30 p.m., Saturday, South Bellevue Community Center, 14509 S.E. Newport Way, Bellevue; free (bellevuewa.gov).

The Great SBCC Pumpkin Race

SAT Bring your decorated pumpkin complete with wheels to compete in the eighth annual great SBCC Pumpkin Race, preregistration required to participate, 10 a.m.-noon and noon-2 p.m., Saturday, South Bellevue Community Center, 14509 S.E. Newport Way, Bellevue; free (bellevue.com).

Halloween Trolley & Hands-on History Day

SAT Kids can decorate a Halloween mask, take a trolley ride and get admission to Gilman Town Hall Museum, children under 3 and members of the Issaquah History Museums enter free. 11 a.m.-3 p.m., Saturday, Issaquah Depot Museum, 78 First Ave. N.E., Issaquah; $6 (issaquahhistory.org).

Zombie Walk

SAT Community invited to dress up as zombies or watch as “zombies” walk along Front Street to City Hall and then dance to Michael Jackson’s “Thriller” and the Rocky Horror’s “Time Warp,” prizes will be awarded 1:30-5:30 p.m., Saturday, downtown Issaquah, Front Street and East Sunset Way, Issaquah; free (issaquahzombiewalk.com).

Halloween Scavenger Hunt

SAT One-mile scavenger hunt and Halloween hike, Halloween treats and photo booth with a miniature horse, Washington State Discover Pass required to park in the main Bridle Trails State Park parking lot, register online, 10 a.m.-noon, Saturday, Bridle Trails State Park, 5300 116th Ave. N.E., Kirkland; free (bridletrails.org).

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Pumpkins in the Park

SAT Harvest festival offering a pumpkin patch, hay maze, pop-up farmers market, carnival games, goats, food and a costume contest, trick-or-treating throughout downtown after event, noon-3 p.m., Saturday, Marina Park, 25 Lake Shore Plaza, Kirkland; free (kirklandchamber.org).

Street of Treats Autumn Festival

SAT Celebrate harvest season, come dressed in your favorite costume, visit participating merchants for a special treat, enter costume contest, projects and activities, face painting, photo opportunities, Reptile Man presentation, bring bag for treats, register online, 2-5 p.m., Saturday, downtown Kent, Fourth Avenue between Saar Street and James Street, Kent; free (kentwa.gov).

Jubilee Farm Harvest Festival

SAT-SUN Pumpkin patch, hayrides, pony rides, artists, farm animals, food trucks, farm market, pumpkin trebuchet, 10 a.m.-5 p.m., Saturday-Sunday, Jubilee Farm, 230 W. Snoqualmie River Road N.E., Carnation; free admission (jubileefarm.org).

Remlinger Farms Fall Festival

SAT-SUN Pumpkins, pony rides, hay maze and hay jump, steam train, antique car ride, animal barnyard, pedal cars, 10:30 a.m.-4:30 p.m., Saturday-Sunday, Remlinger Farms, 32610 N.E. 32nd St., Carnation; $20.75-$22.75 (remlingerfarms.com).

Pumpkin Train Rides

SAT-SUN 30-minute train ride with goody bags of treats and pumpkins for ages 15 and under, 11 a.m., 1 p.m. and 3 p.m. Saturday; 11 a.m. and 1 p.m. Sunday, reserve tickets in advance, walk-up tickets are limited, Chehalis Centralia Railroad and Museum, 1101 S.W. Sylvenus St, Chehalis; $15 children 2 and under/free (steamtrainride.com).

Museum of Fright

SUN Trick-or-treating, haunted house, obstacle course, carnival-style games and activities, costumes encouraged, costumed children 18 and under/free, no costume/$5, admission for adults accompanying children under age 18/$10, discounted admission available on-site, 10 a.m.- 3 p.m., Sunday, Museum of Flight, 9404 E. Marginal Way S., Seattle; free-$10 (museumofflight.org).

Trick or Treat on the Waterfront

SUN Family-friendly event, trick-or-treating at participating businesses from the Ferry Terminal at Pier 52 to Pier 66, costumed characters at Pier 58, music by Chief Sealth High School’s Mariachi Las Aguila, costume contest, giveaways and treats, games and more, noon-4 p.m., Sunday, Pier 58, 1401 Alaskan Way, Seattle; free (friendsofwaterfrontseattle.org).

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West Seattle Harvest Festival

SUN Costume events for kids, adults and pets, chili cook-off, hot chocolate and cider garden, 10 a.m.-2 p.m., Sunday, West Seattle Junction, California Avenue Southwest and Southwest Alaska Street, Seattle; free (wsjunction.org).

Biringer’s Black Crow Pumpkin Patch and Corn Maze

FRI-WED Pet-friendly pumpkin patch, corn maze, farm market, noon-9 p.m. Friday, 10 a.m.-9 p.m. Saturday, 10 a.m.-6 p.m. Sunday, noon-6 p.m. Monday-Wednesday, Biringer’s Black Crow Pumpkins & Corn Maze, 2431 Highway 530, Arlington; free, U-Pick pumpkins priced by size/$2-$16 (seattlenorthcountry.com).

Georgetown Morgue haunted attraction

FRI-OCT. 31 Halloween season scares for ages 13 and older; 6 p.m.-midnight Friday-Saturday; 7-10 p.m. Sunday-Wednesday, 6 p.m.-11 p.m. Oct. 31, admission free for kids with donation of three cans of food, $5/adults, Friday-Oct. 31, Georgetown Morgue Haunted House, 5000 E. Marginal Way S., Seattle; $25-$55 (seattlehaunts.com/georgetown-morgue).

Carpinito Brothers Pumpkin Patch and Corn Maze

FRI-OCT. 31 Pumpkin patch, farm market, corn maze, Farm Fun Yard activities for all ages including farm animals, a hay maze, rubber duck races, a goat walk; 9 a.m.-6 p.m. daily, Friday-Oct. 31, Carpinito Brothers Pumpkin Patch, 6868 S. 277th St., Kent; fees for some activities (carpinito.com).

Stocker Farms Fall Festival/Stalker Farms

FRI-OCT. 31 Corn maze, pumpkin patch, hayrides, activities, 10 a.m.-6 p.m. Friday-Oct. 31; Stalker Farms haunted attraction, dark-10 p.m. Friday-Sunday and Oct. 31-Nov. 2; Stocker Farms, 8705 Marsh Road, Snohomish; $14.95-$22.95/fall festival, $19.95-$42.95/Stalker Farms (stockerfarms.com).

The Farm at Swan’s Trail

FRI-OCT. 31 Washington state corn maze, pumpkin patch, petting farm, 10 a.m.-6 p.m. Saturday-Sunday, noon-6 p.m. weekdays, Friday-Oct. 31, The Farm at Swan’s Trail, 7301 Rivershore Road, Snohomish; $8.25-$14.68 includes all activities (425-334-4124 or thefarm1.com).

Bob’s Corn and Pumpkin Farm

FRI-OCT. 31 Country store 10 a.m.-7 p.m.; Pumpkin patch 10 a.m.-dark; Fun Farm last admission 10 p.m. Friday-Saturday and 6 p.m. Sunday-Oct. 31; Kids play areas 10 a.m.-6 p.m.; daily through Oct. 31, Bob’s Corn, 10917 Elliott Road, Snohomish; $6-$18 (bobscorn.com).

Bailey Family Farm

FRI-OCT. 31 Pumpkin patch, farm market, play area, hayrides, 10 a.m.-5 p.m. daily, Friday-Oct. 31, Bailey Farm, 12711 Springhetti Road, Snohomish; free (baileyveg.com).

Craven Farm

FRI-OCT. 31 Pumpkin patch, corn maze, gift shop, weekend activities, 9:30 a.m.-dusk, daily through Oct. 31, Craven Farm, 13817 Shorts School Road, Snohomish; free admission, fees by activity (360-568-2601 or cravenfarm.com).

Fright Fest at Wild Waves

FRI-OCT. 31 All-ages activities noon-6 p.m. Saturday and Sunday, frightful attractions 7-11 p.m. Friday through Sunday; weekends through Nov. 2, Wild Waves Theme & Water Park, 36201 Enchanted Parkway S., Federal Way; $16.99-$28.99, free for season pass members (wildwaves.com).

Carleton Farms Fall Fun

FRI-OCT. 31 Farm market, pumpkin patch, corn maze, hayrides, kids activities, 10 a.m.-6 p.m., Friday-Oct. 31; night adventures haunted activities 7-10 p.m., Friday-Sunday and Oct. 31, Carleton Farm, 830 Sunnyside Blvd. S.E., Lake Stevens; fees vary (425-334-2297 or carletonfarm.com).

Pumpkin Patch, Thomasson Farm

FRI-OCT. 31 Pumpkins, Kids Korral activities, corn maze, laser tag, 9:30 a.m.-5:30 p.m. through Oct. 30, 9:30 a.m.-noon Oct. 31, Thomasson Family Farm, 38223 236th Ave. S.E., Enumclaw; $3-$20 (thomassonfarm.com).

Foster’s Produce and Corn Maze

FRI-OCT. 31 Pumpkin patch, “Wizard of Oz”-themed corn maze, farm market, additional activities on weekends, 9 a.m.-5 p.m., daily, Foster’s Produce and Corn Maze, 5818 SR 530 N.E., Arlington; prices vary (425-239-7362 or fosterscornmaze.com).

Gordon Skagit Farms Autumn Market

FRI-OCT. 31 Pumpkins, gourds, apples, locally grown seasonal produce market with autumn displays, corn maze, 9 a.m.-6 p.m., daily, Gordon Skagit Farms, 15598 McLean Road, Mount Vernon; free (360-391-5730 or gordonskagitfarms.com).

Eternal Night

OCT. 31 Vintage Halloween party with spooky decor, cocktails and DJ Mike Illvester, come in costume for a chance to win free drinks, 8 p.m.-midnight, Oct. 31, W Seattle, 1112 Fourth Ave., Seattle; free (facebook.com/events/957484581261972).

Halloween Disco Dance with DJ Dana Dub

OCT. 31 Dress up and dance to disco, Motown and soul, celebrate Halloween ’70s style with a hustle lesson, costumes strongly encouraged but not required, cocktails and dinner at the Tin Table, 21 and over only, 9 p.m. hustle lesson, 9:30 p.m.-1 a.m. disco dance, Oct. 31, Century Ballroom, 915 E. Pine St., Seattle; $15 (centuryballroom.com).

Spooky Speakeasy

OCT. 31 Halloween party in a spooky speak-easy, haunted exhibits, food and cocktail specials, costume contest at 8 p.m. with prizes, photo booth and more, 10 a.m.-midnight, Oct. 31, Smith Tower, 506 Second Ave., Seattle; $25 (smithtower.com).

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Spellbound

OCT. 31 Halloween celebration with drink specials, DJ starting at 9:30 and a tarot-card reader from 6-9 p.m., 6 p.m.-2 a.m., Oct. 31, W Bellevue, 10455 N.E. 5th Place, Bellevue; free (facebook.com/events/w-bellevue/spellbound/509037569874395).

Trunk or Treat

OCT. 31 Kids can stop by car trunks and booths decorated and filled with candy and goodies, kids ages 12 and under are invited, bring your own bag to collect candy and a canned-food item as a suggested donation to the Mill Creek Food Bank, 6-7:30 p.m., Oct. 31, Mill Creek City Hall North, 15720 Main St., Mill Creek; free (millcreektourism.com).

Special interest

Belltown Exposed!

SUN Celebration of Belltown and its vibrant history, performances, prizes, drink specials and more, book release of “Belltown Exposed!,” dress to match your favorite decade, costumes and RSVP encouraged but not required, 5:30-8:30 p.m., Sunday, The Rendezvous, 2322 Second Ave., Seattle; free (therendezvous.rocks).

Introducing the Platinum Rule

SUN Learn about the Platinum Rule and connect with others who want to converse and build relationships based on community building, 1:30-5 p.m., Sunday, St. Patrick’s Catholic Church and Hall, 2702 Broadway E., Seattle; $10-$15 (interfaithsummit.bpt.me).

Diwali and New Year’s Celebration

SAT Diwali celebration with food, noon-6 p.m., Saturday, BAPS Temple, 15440 N.E. 95th St., Remdond; free (baps.org/Seattle).

The Crimes of Macbeth: Witchcraft of Neuropsychology?

WED Join Dr. Kaitlyn Casimo for a discussion of Macbeth and the influence the mysterious Weird Sisters had on his decision-making, topics include the science of decision-making, pathways, and brain structures that enable decisions, 7-9 p.m., Wednesday, Pacific Science Center, 200 Second Ave. N, Seattle; $5 members/free (pacificsciencecenter.org).