NOTE: “Today” and “tonight” refer to Friday, Oct. 30.

Three North Olympic Peninsula downtown associations will welcome costumed children and their parents for Halloween trick-or-treat Saturday.

Port Townsend

The Port Townsend Main Street Program will host trick-or-treating and a Halloween parade at 4 p.m.

Water Street and some side streets will be closed to vehicular traffic for public safety from 3:15 p.m. to 5:30 p.m.

At 3:45 p.m., costumed preschool-through-sixth-grade students and their parents will assemble at the Bank of America Plaza at 734 Water St. for the 21st annual Main Street Downtown Trick or Treat and Costume Parade.

The Main Street Witches will lead off the parade and will be available to help during the trick-or-treat.

The parade will proceed to Quimper Mercantile Plaza, 1121 Water St.

Children will trick-or-treat their way back to the starting point.

Annually, 1,500 to 2,000 people attend the Port Townsend Main Street program each year, the program said.

For more information, visit www.ptmainstreet.org.

Port Angeles

Downtown Port Angeles businesses will open their doors for trick-or-treat from 2 p.m. to 5 p.m.

Each participating business will be marked by a sign in its window.

A child-friendly version of the fifth-floor haunted house at the Elks Naval Lodge, 131 E. First St., will be held during trick-or-treat hours.

Admission will be $6 for children to experience a less scary version of the haunted house.

Funds raised by the haunted house benefit Elks projects, including student scholarships, home nursing care and children’s therapy.

Sequim

Trick-or-treaters are invited to visit businesses along Sequim Avenue and Washington Street from 3 p.m. to 5 p.m.

About 25 businesses, each marked with a pumpkin sign in the window, will give candy and prizes to the young ghouls, superheroes, princesses and others, said Shelli Robb-Kahler, executive director of the Sequim-Dungeness Valley Chamber of Commerce.

“Don’t forget to go to the library. It’s out of the way but is taking part in the trick-or-treat,” Robb-Kahler said.

The Sequim Library is at 630 N Sequim Ave.

A Dropped Stitch Yarn Shop, 136 S. Second Ave., will celebrate nine years of business Saturday and is among the many shops that will entertain costumed children.

For more information, phone 360-683-1410.

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Reporter Arwyn Rice can be reached at 360-452-2345, ext. 5070, or at arwyn.rice@peninsuladailynews.com.