What the Fluff? Festival
← Back to Explore More Events
What the Fluff? Festival
Start Date 09/19/2026
Start Time 1:00 pm
End Date 09/19/2026
End Time
Location Union Square, Union Square, Somerville, MA 02143
Event Type Children and Family Friendly

What the Fluff? Festival

Event Details

Somerville’s ooey-gooey tribute to Marshmallow Fluff, invented in Union Square, returns for its 21st year under the theme Legally Fluff: A Toast to Union Square. The afternoon fills the square with Fluff-fueled culinary creations, contests, games, live music and entertainment. More than 100 local businesses and vendors take part, with a severe weather date of Sunday, September 20.