Montana Halloween Events 2020

Are you ready to track down some fun events for Halloween 2020? We have put together one of the largest calendars of Halloween events in the United States for you.It locates holiday activities for all ages – from kid-friendly children’s activities to adult Halloween parties. We don’t have every event yet, but there are plenty of ideas to get you and your family in the mood for Halloween in Montana.

Last Major Update:

At this point we are still checking for 2020 dates on all events. We've been through quite a few events already - some websites are still holding off on releasing a date, whereas other websites have not been updated at all for this year. We leave the links up from previous events so you can check yourself if it hasn't updated yet.
All events showing 2020 dates need to be verified to confirm that changes to the schedule were not made by the organizers after publication here, due to COVID-19. We do not run these events, and would hate for anyone to go out of their way only to find the event had been canceled after releasing a date. Please click through to the event website to confirm! Be safe and have a great fall!

2020 Events

Nightmare Affair - Billings, MT - Oct 18 to Oct 24, 2020
Virtual fundraiser and silent auction for 2020. Adult Halloween costume party, plus a buffet dinner, live music, a live auction, and hands-on science experiments.

Past Events

Thirsty Street Family-Fun Halloween Social - Billings, MT - Oct 26, 2019
Activities, games, snacks, candy & prizes! Costume contest with prizes at 3pm. Ages 10 & under.

Fright Night - Red Lodge, MT - Oct 26, 2019
Enjoy a Fright Night Halloween at the Yellowstone Wildlife Sanctuary! Party with the animals after dark and see nocturnal (night) and crepuscular (twilight) animals at their most active! Activities include a costume contest, live music, hot cocoa or cider, and guided tours.

Montana Boo at the Zoo - Billings, MT - Oct 26, 2019
Boo at the Zoo is a merry, not scary event filled with lots of games and activities, food vendors, lively entertainment and lots of candy! You don’t want to miss the Mad Scientist Show featuring some of the zoo animals and staff members at Noon, 2pm, and 3:15pm. Regular Zoo admission day and free for Zoo members!

Nightmare on Thirsty Street - Billings, MT - Oct 31, 2019
Grab some Boo’s at Nightmare on Thirsty Street! Halloween party & Costume Contest. Costume contest with prizes at 9pm.

Trick or Treat at the Original Governors Mansion - Helena, MT - Oct 31, 2019
Bring the kids to trick-or-treat at the Original Governor’s Mansion for a sweet taste of Halloweens past, located at 304 N Ewing.

Halloween Celebration for kids - Helena, MT - Oct 31, 2019
Lewis & Clark Library

Malloween Trick or Treat - Bozeman, MT - Oct 31, 2019
Trick-or-treating from 5PM to 7PM on October 31 at Gallatin Valley Mall! Simply visit the entrance of participating retailers throughout the mall for a great selection of candy and fun costumes. Meet Champ, get free professional family photos, and plenty of candy – while staying warm and dry!

Little Tykes Trick or Treat - Helena, MT - Oct 31, 2019
Dress up in your favorite costumes and join Downtown Helena, Inc. and the Helena Business Improvement District for the Little Tykes Trick or Treat on Halloween from 1-4pm throughout Downtown Helena.

Boo ‘n Brew - Missoula, MT - Oct 31, 2019
Beer garden, aerial acrobat show, hay rides, live DJ, food trucks, giant yard games, live art creation and more.

Fright Night – Red Lodge, MT – Oct 28, 2017

Boo at the Zoo – Billings, MT – Oct 28, 2017

Nightmare Affair – Helena, MT – Oct 28, 2017

Nightmare on Thirsty Street – Billings, MT – Oct 28, 2017

Halloween Party w/ The Wench and the Essentials – Helena, MT – Oct 28, 2017

Halloween Spooktacular – Great Falls, MT – Oct 29, 2017

Halloween Bash – Missoula, MT – Oct 29, 2017

Little Tykes Trick or Treat – Helena, MT – Oct 31, 2017

Halloween for Hospice – Missoula, MT – Oct 31, 2017

Halloween Festivities – Red Lodge, MT – Oct 31, 2017

Gallatin Valley Malloween – Bozeman, MT – Oct 31, 2017

Trick or Treating – Bozeman, MT – Oct 31, 2017, 4 PM

For more Halloween fun in Montana, check out our pages for these classic fall activities:
Haunted HousesPumpkin PatchesGhost Tours

Shop Funtober for Halloween Costumes