Semi-Stationary Ridge in place is making forecasting pretty easy for BC. The big question is when will it break down, finally move east and open the door to cooler/wetter weather.
All signs point to Sunday afternoon for the beginning of the shift.
With the collapse of the ridge, a Cold Low will move out of the Gulf of Alaska (the source of strong winter storms), track south along the BC coast and shift east Sunday into Monday. This will bring temperatures and conditions much more like fall. Expect a cool down with rain.
This would be a good weekend to fall-fertilize your lawn; the rain early next week will water it in nicely.