I live in Portland and we have had record rainfall for the past few days. It generally gets dry for good in late June but it can be nasty into July. Things stay dry and sunny through September but then the grey begins. It actually rains less here than on places like New York City and Washington DC. The problem is that they get big storms that drop inches at a time and Oregon gets a steady drizzle.
It is not that bad but I am looking forward to some sun in California.
If you don't mind me asking, how long does the gray period last? Through April? May? I read that Eugene averages about 139 days of rainfall (http://www.climate-zone.com/climate/united-states/oregon/eugene/) each year.
I am glad I'm moving out of Austin in early August. That is the time of year there when it scorches the most. It wasn't too bad this last year, but before then.. ouch it was above 100 several days in a row!