06Z ECMWF... initially looks like its trying to be a typical summer trough where the rain doesn't really move inland and fades over Vancouver Island and then this blob of moisture comes riding in the from the west to save the day. Looks so nice.
Looks like this cooler weather with rain is coming at just the right time. Smoke models are predicting smoke from Canada will dip down over the PNW and start to pile up along the Pacific Coast. But with the upcoming rain, these models could change completely. Onshore flow is good for keeping the smoke away. Offshore is bad.