The Oregon Garden Brewfest is this weekend. Check out the list of beers here.
I'm gonna be bad. The local beers are generally part of the standard offerings, and while it's not usual 'round here to see so many in one place on tap, it's not like you can't get bottled versions of most of them. There aren't many special brews at this festival.
So I'm gonna highlight two imports, which are rare around here, two moreover that aren't very high in alcohol, and which depending on the weather would make splendid session beers, one if it's damp, the other if it's sunny.
Young's Double Chocolate Stout and Hoegaarden Witbier.
They are emphatically not hopheadia brews. Neither beer blows me away, but I find both deeply satisfying and comforting. Even in Portland you only find them on draft occasionally. Your mileage may vary.