Harvest Festival

Crowded street at Harvest Festival with tents.

The last full weekend in September is a busy one in Prosser, with the Great Prosser Balloon Rally and the Harvest Festival all in one weekend from September 25-27. After you enjoy the early morning balloon launch at the airport, come downtown for streets filled with unique, handcrafted, and one-of-a-kind vendors. Food vendors also offer up tasty treats, and the stage show on Friday & Saturday fills the air with music. Historic Downtown also hosts the Street Painting Festival during the event, on the downtown streets. We look forward to seeing you!

99th Annual States Day Celebration

99th States Day Celebration parade participant waving

States Day Celebrating 99 years of Community in Prosser with New and Old Traditions

Prosser’s oldest community event, “States Day” will be held on Monday, September 7th 2026, and offers something for the whole family. Kicking off the day is the Grand Parade which starts at 10:00am. With a long line of marching bands, floats, mounted entries, junior and senior organizations and more, the parade is usually the longest in Central Washington, with more than 100 entries each year. Those interested in participating as an entrant in the parade can contact the Chamber office for an entry form.

After the parade, family activities get underway at the city park. Stop on your way into the park to sign into your state of origin and don’t forget to purchase your States Day Commemorative buttons! Then grab food from our vendors before trying your luck at BINGO under the pavilion or enjoying the stage show, which shows off the talents of local groups.

Bring the family and enjoy a great day of fun, food, and entertainment at Prosser’s States Day Celebration, September 2, 2019.

Prosser Scottish Fest & Highland Games

Bagpipers performing at Scottish festival event.

Get ready for a day filled with Scottish flair and family-friendly festivities at the 2026 Prosser Scottish Fest on Saturday, June 20th. This annual event promises a vibrant celebration of Scottish culture, featuring everything from Heavy Athletics and Clan gatherings to Celtic bands and Highland Dance.

Highlights of the Event include…
• Heavy Athletics: Watch kilted men and women showcase their strength and skill in traditional events like the caber toss, sheaf toss, stone, hammer, and weight events. Brave souls can even try their hand at the Challenge Anvil Toss and Keg Toss for a chance to prove their mettle.
• Celtic Music: Enjoy the enchanting sounds of lively jigs and soulful ballads. Live musicians will captivate audiences with their talent and passion for Celtic music.
• Youth Activities: Younger attendees can join in on the fun with special youth versions of the athletics, open to ages 7-14. They can also unleash their creativity at Wee Scotland with Scottish-themed crafts and activities designed just for them.
• Parade of Tartans: Join the colorful Parade of Tartans at noon. The Chieftain of the Day and the iconic “Prosser Anvil Launch” will officially kick off the festivities, followed by a Highland showcase featuring pipe bands and dancers.
• Highland Market: Browse through a variety of local and regional artisan stalls, as well as Scottish and Irish imports, at the Highland Market.
• The Flying Anvil Pub: Quench your thirst with a pint of local brew, including the custom-brewed Smokin’ Anvil Scottish Ale, and PNW cider at The Flying Anvil Pub.

Don’t miss out on this unforgettable celebration of Scottish heritage and tradition! Mark your calendars and join us for a day of highland family fun at the Prosser Scottish Fest.