I don't know whether Eugene uses salt, but that's the big killer for chains around here. Everything was good and smooth until the snow (and salt) hit a few weeks back, and now every day things get remotely wet, I have to re-lube or I hear/feel it the very next morning in the drivetrain. In any event, if the weather is consistently crummy, make sure you're running the right lube. Some don't stand up to wet conditions very well, and it may help to switch things up when conditions deteriorate.