Monster Day Greeley | August 23, 2025
Noon-5pm | Downtown Greeley, CO
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Mark your calendar for August 23, 2025, when Monster Day takes over Downtown Greeley again!. There will be costumed monsters roaming the plazas, professional makeup demonstrations, vendor booths, food and beverages, monster makeup, face painting, music, kids activities, a costume contest and more! Plus, Distortions Unlimited will have dozens of their creations set up around the plaza ready for your epic monster photo ops.
Get updates and RSVP to the Facebook event here.
The Mission of Monster Day is to celebrate monsters in our culture in a positive way that encourages imagination and creativity.
Costume Contest Photos | Monster Day Greeley 2025
Check out photos from the 2025 Monster Day Greeley costume contest!
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Monster Day on Social Media
Find Monster Day on Facebook, Instagram, and Tik Tok! Be sure to share your posts with #monsterdaygreeley
What is Monster Day?
It’s a family-friendly celebration of all things “monster!” With the debut of Greeley Gremlin, music, entertainment, face painting, costume contests, demonstrations, and more!
Don't Be a Monster
Proceeds from Monster Day will benefit Don’t Be A Monster, a 501(c)(3) nonprofit organization that offers unique and entertaining anti-bullying assemblies in schools for students in 4th-10th grade.
Follow the fun on Facebook
RSVP to the Monster Day 2024 Facebook event, and follow the monster fun on our Monster Day Facebook page.