A nice destination that would fit your schedule and location would be Seattle, Washington. It's a beautiful area, especailly that time of year... most of the rainy season is gone.
The City proper is vibrant and lots to do... see the Space Needle and have a cup of Starbuck's at the original store on
Pike Place, take the ferry boat to Vancouver, BC for at least a day and see Lion's Gate Park... the multitude of flowers will be in full bloom then.
Take a ferry boat back from Vancouver to Port Angeles and (if you have a car) then drive to Hurricane Ridge in the Olympic National Park... (You can take a ferry or drive back to Seattle). Guaranteed its a visit you won't soon forget.
See here of information:
http://www.visitseatt...s-Beyond-Seattle.aspx