My dream pattern. Persistent cool troughing with a lot of sunshine and clear / chilly nights.
Take note Jesse...I like troughing in the summer if the details are right.
It's always been fairly urbanized around SEA. OLM can easily achieve record lows without a legit cold air mass. Not true for SEA.
BTW only 6 in nearly 40 years is pretty lame.
12Z ECMWF was pretty nice. Again showing sunshine every afternoon for the next 10 days (many days in the mornings too). And again has some sneaky warmth early next week despite a troughy pattern overall.