Monster-Day Logo

The Mission of Monster Day is to celebrate monsters in our culture in a positive way that encourages imagination and creativity. 

Mark your calendar for August 12, 2023, 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.

More information on this year’s even is coming soon! (Get the latest updates and RSVP to the Facebook event.)

Monster Gay Greeley Ghostbusters
Ed Edmunds Painting Monster Gay Greeley
Monster Gay Greeley photo ops
Monster Gay Greeley Monsters
Monster Gay Greeley Ghostbusters

Monster Day Greeley - Aug. 12, 2023

Noon-6p.m. in Downtown Greeley
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Greeley Gremlin

Monster Day on Instagram

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Monster Day Greeley Mascots

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!

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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.

Meet Rex The Newest Monster Day Greeley Mascot

Meet Rex The Newest Monster Day Greeley Mascot

We'd like to introduce you to Rex, Distortions Unlimited's latest creation and addition to the Monster Day family. Come to Monster Day Saturday, August 20, 2022, from noon-6pm in downtown Greeley, Colorado. Meet Rex, our newest Monster Day mascot, along with Greeley,...

Monster Day Greeley 2022 Costume Contest Rules

Monster Day Greeley 2022 Costume Contest Rules

Monster Day will take over Downtown Greeley again on Saturday, August 20, 2022, and you're invited to participate in and/or watch this year's costume contest. Come show off your monster digs, we don't care if it's a store-bought costume, a handmade masterpiece, or...

Monster Day Greeley 2019 Costume Contest Photos

Monster Day Greeley 2019 Costume Contest Photos

Part of the fun of Monster Day is all the people who come dressed up as their favorite monsters. This year's entrants in the costume contest did not disappoint! You can scroll through the entries posted on our Facebook page and "like" or "love" your favorites to help...

Monster Blog