Cornwall’s Weekend Forecast, June 27 & 28

June 24, 2026

Cornwall, ON – Whether you’re looking to dive into local history, shop from creative vendors, or enjoy the outdoors, this weekend offers something for everyone.

With a mix of culture, community, and summertime energy, here’s your guide to what’s happening around Cornwall on June 27–28.

Dev Fest 2026 – Bigger, Louder, Better!

June 26 & 27, 2026
DEV Hotel & Conference Centre Waterfront | Cornwall, ON

Cornwall’s biggest outdoor summer festival returns to the St. Lawrence waterfront with two nights of live music, expanded grounds, upgraded staging, and a bigger festival experience than ever. Buy the weekend pass or just one night.

For more information about this event, visit the their official website.

Dog Mania!

June 27, 2026, Guindon Park

Dog Mania returns to Guindon Park on June 27, 2026, bringing together dog lovers, families, and furry companions for a fun-filled day outdoors. This popular community event celebrates all things canine, featuring interactive activities, demonstrations, and opportunities to connect with local pet vendors and organizations.

For full event details, schedules, and updates, be sure to visit the official event website: Mastiff Productions | Join the Canine Celebration Today

Cornwall Art Walk 2026!

June 27^th, Downtown Cornwall

The Art walk is officially returning for 2026, on Saturday, June 27^th from 3:00 pm to 9:00 pm. Cornwall Art Walk transforms downtown Cornwall into its very own arts district, featuring the work of local and regional artists, live music, performing arts, merchant specials, and interactive art activities.

For more information on this event visit the Cornwall Art Walk website or their Facebook page.