Washington County, Oregon Events Event(s) for Monday, October 5, 2015 Date Event Category 10/4/2015 Plein Air @ Washington County Community The indicates on-line registration is available for this event. Enter your email address and "check" the box for each event that interests you. You will automatically receive an email reminder before the event! Your Email Address Remind me 1 2 3 4 5 day(s) prior to the event date.