Get ready for one of Somerville’s favorite Halloween traditions! SomerStreets: Monster Mash transforms Somerville Avenue into a festive Halloween celebration for all ages. Join us on Sunday, October 18, from 1–5 PM (severe weather date: Sunday, October 25) for live music, interactive art activities, family fun, local food vendors, and more.
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All Upcoming Events, Starting on Oct 18, 2026
SomerStreets: Monster Mash
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