You can watch out not only for rain showers, but perhaps even some thunder showers on Friday, says Cliff Mass, the KPLU weather expert and professor of Atmospheric Sciences at UW.
If you're planning ahead, he says in this week's podcast, Friday afternoon will get the worst of it, with Saturday slightly less, and Sunday tapering off more and warming up a few degrees.
And, if you're wondering, When will the water at our beaches be warm enough to get in?... Mass has some bad news. The early part of summer is when winds conspire to create "upwelling" along much of the Pacific coast, and that makes the water get colder.