Merchants in downtowns across the North Olympic Peninsula are offering trick-or treating on Monday after haunted houses and other offerings have set the stage throughout the weekend.

• In Port Angeles, participating businesses will offer trick-or-treating for costumed children from 2 p.m. to 5 p.m.

Street-crossing guards will be provided by volunteers from the Olympic Kiwanis Club of Port Angeles to help keep the streets safe.

White Crane Martial Arts will offer a Haunted House at 129 W. First St.,during the same hours. Admission is free.

• In Sequim, participating merchants on Washington Street will offer treats to costumed young people from 3 p.m. to 5 p.m.

Staff with the Sequim-Dungeness Valley Chamber of Commerce will be on hand to help keep youngsters safe.

• In Forks, many businesses will hand out candy to children during regular business hours or from 4 p.m. to 5 p.m.

A flier with details about each business is available at forkswa.com/events.

• Port Townsend will put on a parade prior to trick-or-treating on Monday.

Participants in the costume parade will assemble at 3:45 p.m. at 1st Security Bank Plaza at Adams and Water streets.

The parade will leaves at 4 p.m. Parade participants will march down Water Street to Polk Street.

Trick or Treat will follow immediately at participating businesses on Water Street, Washington Street and in between.

Also on Monday are:

• Trick or Treat Trail at Extreme Sports Park from 2 to 5 p.m. Monday will benefit the Port Angeles swim team.

The event will offer 20 booths. This year, it will add a fire truck, ambulance, police car, dump truck and excavator for kids to check out.

• Pipe Screams is a Halloween pops concert featuring organists in costume from across the North Olympic Peninsula playing music from movies, video games, pop songs and television shows at 6 p.m. Monday.

The concert will be presented by the Olympic Peninsula Chapter of the American Guild of Organists at the Holy Trinity Lutheran Church at 301 E. Lopez Ave, Port Angeles. Costumes are urged.

Admission is free with donations accepted.

Leading up to Halloween are a variety of activities.

• Rain of Terror: Haunted Hangar is open from 7 p.m. to midnight today and from 7 p.m. to 11 p.m. Monday at 5144 Quillayute Road in Forks.

Admission is $10 per person.

• Truck or Treat is planned from 2 p.m. to 5 p.m. today at the Forks Assembly of God, 81 Huckleberry Lane on Monday at the Forks.

• “Night of the Living Dead” is performed at 7 tonight and 2 p.m. Sunday at Olympic Theatre Arts, 414 N. Sequim Ave., and will continue Oct. 26-30.

Tickets are $20, with students charged $15 at olympictheatrearts.org.

• Port Townsend Urban Sketchers will sketch in Laurel Grove Cemetery at 10 a.m. today.

The group will meet inside the gate on Discovery Road between 22nd and 25th streets.

The event is free and open to sketchers of all skill levels.

For more information, visit urbansketchersport townsend.wordpress.com.

• Haunted Histories and Mysteries of Port Townsend is offering events all over town today.

Ticket/event information is available at ptmainstreet.org. Tickets are available through Eventbrite.com (search Haunted Histories and Mysteries of Port Townsend). Ticket prices range from $20 to $75.

The event information center will be at The Cotton Building in Downtown Port Townsend at 11 a.m. until 10 p.m. The event is free. Taps is donating a percentage of proceeds to the nonprofit Main Street Program.

• Pumpkin carving is set at the Sequim Prairie Grange at 290 Macleay Road from 4:30 to 7:30 p.m. today.

Pumpkin carving, decorated trunks and candy are planned in a walk-through behind the grange hall in the outdoor kitchen area.