The 10th and final Monster Day celebration in downtown Greeley.
Fri, 21 Aug 2026 – Sat, 22 Aug 2026
6:00 PM – 5:00 PM (America/Denver)
Downtown Greeley Greeley , Colorado
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Celebrate the 10th and final Monster Day in downtown Greeley! This beloved community event returns for one last time, featuring costumed monsters roaming the streets and a special kick-off concert on the 9th Street Plaza on Friday, August 21. The main event follows on Saturday, August 22, with activities for all ages. Join the community for this historic final celebration and help us send off Monster Day in style in downtown Greeley.
What to Expect
A large-scale community festival with costumed characters and live music.
Who Should Attend
Families
Greeley residents
Monster enthusiasts
Community members
Agenda Overview
Friday kick-off concert followed by Saturday main event.
Venue & Address
Downtown Greeley
802 9th St #100 Greeley , Colorado – 80631 United States
Organizer
Monster Day Greeley · Community Organization
Organizers of the annual Monster Day festival.
Frequently Asked Questions
Is this the last one?
Yes, this is the 10th and final Monster Day.
When is the concert?
Friday, August 21, 6 PM – 10 PM.
When is the main event?
Saturday, August 22, Noon – 5 PM.
Where is it held?
8th and 9th Street Plazas, Downtown Greeley.
Is it free?
Check the official Monster Day website for details.
Are costumes encouraged?
Yes, it is a monster-themed event.
Tags
festival
Greeley
monsters
community
final
family
Summary
The final Monster Day festival in downtown Greeley.